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780+ free online tools for PDFs, Images, Audio, Legal, Insurance, Tax, Medical & more. No installation, no sign-up.
Most Popular Tools
Our highest-traffic tools used by millions
Internet Speed Test
Test download & upload speed
Merge PDF
Combine multiple PDFs
Compress PDF
Reduce PDF file size
QR Code Generator
Generate QR codes
Image to PDF
Convert images to PDF
Image Compressor
Reduce image file size
Word Counter
Count words & characters
Password Generator
Generate strong passwords
JSON Formatter
Format & validate JSON
Image Resize
Change image dimensions
Unit Converter
Convert any units
Scientific Calculator
Advanced calculations
PDF Tools
Everything you need for PDFs
Image Tools
Edit and convert your images
Resize Image
Change dimensions
Compress Image
Reduce file size
Convert Image
PNG, JPG, WebP
Crop Image
Crop & trim
Rotate / Flip
Rotate or flip images
Watermark
Add watermark
Grayscale
Convert to grayscale
Blur Image
Add blur effect
Image to Base64
Convert to Base64
Color Palette
Extract colors from image
Meme Generator
Create memes
Favicon Generator
Create favicons
Audio Tools
Process and edit audio files
Text Tools
Work with text content
Developer Tools
Essential tools for developers
JSON Formatter
Format & validate
Regex Tester
Test regular expressions
JWT Decoder
Decode JWT tokens
CSS Gradient
Generate gradients
Box Shadow
Generate box shadows
Color Contrast
WCAG checker
HTML Minifier
Minify HTML
CSS Minifier
Minify CSS
JS Minifier
Minify JavaScript
CSV to JSON
Convert CSV
SQL Formatter
Format SQL queries
Cron Generator
Build cron expressions
SEO Tools
Optimize your web presence
Calculators & Converters
Calculate and convert anything
Scientific Calculator
Advanced math
BMI Calculator
Body Mass Index
Age Calculator
Calculate exact age
Percentage
Percentage calculator
Loan/EMI
Loan calculator
Tip Calculator
Calculate tips
Discount
Discount calculator
Compound Interest
Interest calculator
GPA Calculator
Calculate GPA
Date Difference
Days between dates
Unit Converter
Convert units
Timestamp
Unix timestamp
Binary/Hex
Number systems
Roman Numerals
Convert roman numerals
Data Size
KB/MB/GB converter
Aspect Ratio
Calculate ratios
Calorie Calculator
Daily calories
Salary Converter
Hourly/Annual
Electricity Cost
Energy costs
DPI Calculator
Print resolution
Security Tools
Encryption, hashing & security
Generators
Generate codes, text & more
Testing & Fun
Speed tests, games & interactive tools
Speed Test
Internet speed
Typing Test
Test typing speed
Click Speed
CPS test
Reaction Time
Test reflexes
Keyboard Tester
Test keys
Webcam Test
Test webcam
Mic Test
Test microphone
Stopwatch
Precise timer
Countdown Timer
Count down
Pomodoro
Focus timer
Metronome
Keep tempo
Coin Flipper
Flip a coin
Dice Roller
Roll dice
Legal & Injury
Legal calculators, settlement estimators & claim tools
Mesothelioma Compensation Calculator
Estimate claim range from exposure
Asbestos Exposure Risk Assessment
Assess exposure risk score
Mesothelioma Life Expectancy
Prognosis stats by stage
Asbestos Trust Fund Calculator
Check trust fund availability
Mesothelioma Treatment Cost
Estimate treatment costs
Asbestos Job Site Checker
Check occupations with exposure
VA Asbestos Claim Calculator
Estimate VA benefits
Statute of Limitations Checker
Filing deadlines by state
Structured Settlement Calculator
Lump sum value estimate
Annuity Buyout Calculator
Cash now estimate
Settlement Present Value
Todays value calculator
Lottery Lump Sum vs Annuity
Compare payout options
Settlement Tax Calculator
Taxable amount estimate
Personal Injury Settlement
Estimate settlement value
Car Accident Settlement
Claim value estimator
Truck Accident Claim
Commercial vehicle claims
Motorcycle Accident Settlement
Motorcycle claim estimate
Slip & Fall Settlement
Injury compensation range
Medical Malpractice Claim
Malpractice estimate
Wrongful Death Settlement
Settlement range estimate
Dog Bite Claim Calculator
Compensation estimate
Workplace Injury Calculator
Workers comp estimate
Whiplash Settlement
Severity-based estimate
Pain & Suffering Multiplier
Medical cost multiplier
Lost Wages Calculator
Missed work compensation
Future Medical Costs
Lifetime treatment estimate
Diminished Value Calculator
Post-accident car value
Property Damage Claim
Repair vs replace
Divorce Settlement Calculator
Asset split estimate
Child Custody Schedule
Parenting time calculator
Child Support Calculator
State formula calculator
Alimony Calculator
Spousal support estimate
Business Valuation
Revenue-based value
Partnership Buyout
Buyout price calculator
IP Value Estimator
Patent/trademark value
Prenuptial Checklist
Interactive asset list
LLC vs S-Corp vs C-Corp
Entity comparison
Business Formation Cost
State filing fees
Contract Breach Damages
Damages calculator
Non-Compete Evaluator
Enforceability by state
Immigration Visa Fees
Visa cost calculator
Bail Bond Calculator
Bail estimate
DUI Penalty Calculator
Fines & penalties
Insurance
Insurance premium estimators & comparators
Car Insurance Estimator
Premium by age/record
Life Insurance Needs
Coverage calculator
Term vs Whole Life
Side by side compare
Home Insurance Estimator
Premium estimate
Health Insurance Comparator
Plan comparison
Business Insurance Cost
Industry-based estimate
Commercial Auto Insurance
Fleet pricing
General Liability Insurance
Business premium
Professional Liability (E&O)
Profession-based
Directors & Officers (D&O)
Company size premium
Cyber Insurance Premium
Data/industry based
Workers Compensation
Payroll-based premium
Disability Insurance
Income coverage
Long-Term Care Insurance
Age-based premium
Umbrella Insurance
Extra coverage
Renters Insurance
Belongings coverage
Flood Insurance
Zone-based premium
Earthquake Insurance
Location-based
Pet Insurance
Breed/age premium
Travel Insurance
Trip-based coverage
Wedding Insurance
Budget coverage
Boat Insurance
Vessel premium
RV Insurance
Type-based premium
Landlord Insurance
Rental property
Condo Insurance (HO-6)
Unit value premium
Mortgage & Home Loans
Mortgage calculators & home loan tools
Mortgage Payment Calculator
Full amortization
Refinance Break-Even
When does refi pay off
Home Affordability
Max home price
FHA Loan Calculator
FHA limits/MIP
VA Loan Calculator
$0 down payments
USDA Loan Calculator
Rural eligibility
Jumbo Loan Calculator
Above conforming
ARM vs Fixed Rate
Rate comparison
15yr vs 30yr Mortgage
Interest savings
Cash-Out Refinance
Equity to cash
HELOC Payment Calculator
Draw + repayment
Home Equity Loan
Borrowing power
PMI Removal Calculator
When PMI drops
Closing Cost Calculator
Itemized estimate
Mortgage Points Calculator
Buy down savings
Debt & Credit
Debt payoff strategies & credit tools
Debt Consolidation
Single payment plan
Credit Card Payoff
Payoff date calculator
Credit Card Interest
Minimum payment trap
Balance Transfer Savings
0% APR savings
Debt Snowball
Smallest first payoff
Debt Avalanche
Highest interest first
Debt-to-Income Ratio
Loan qualification
Credit Score Simulator
Score impact
Credit Utilization
Balance/limit ratio
Debt Settlement
Settle for less
Bankruptcy Means Test
Chapter 7 vs 13
Chapter 7 vs 13
Which is better
Debt Payoff Timeline
Visualize debt-free date
Minimum Payment Trap
30 years of minimums
Student Loan Forgiveness
PSLF/IDR check
Student Loan Refinance
Rate comparison
Income-Driven Repayment
IBR/PAYE/REPAYE
Student Loan Interest
Daily interest
Auto & Vehicle
Auto loans, leasing & vehicle cost tools
Auto Loan Calculator
Monthly payments
Lease vs Buy
Compare total cost
Lease Payment Calculator
MSRP/residual
Trade-In Value Estimator
Vehicle value range
Car Depreciation
Value over time
Total Cost of Ownership
Gas/insurance/maint
EV vs Gas Cost
5-year comparison
Car Affordability
Max car payment
Negative Equity
Upside down check
Gap Insurance Need
Loan vs value gap
Car Refinance
Lower rate savings
Used Car Value
Basic valuation
Medical & Healthcare
Healthcare cost estimators & medical tools
Rehab Cost Calculator
Treatment cost range
Rehab Insurance Coverage
Coverage estimate
Alcohol Treatment Cost
Inpatient vs outpatient
Detox Timeline Calculator
Withdrawal timeline
Addiction Severity Assessment
CAGE/AUDIT score
Sober Living Cost
Location-based estimate
Addiction Insurance Verifier
Coverage level
Mental Health Cost Estimator
Therapy cost range
Intervention Cost Planner
Professional pricing
Recovery Timeline
Recovery milestones
Healthcare Cost Estimator
Procedure costs
Insurance Marketplace
Subsidy eligibility
Medicare Plan Comparator
Part A/B/C/D compare
Medicare Eligibility
When you qualify
HSA Savings Calculator
Tax savings
FSA Calculator
Use it or lose it
COBRA Cost Calculator
COBRA premium
Medical Debt Calculator
Payment options
Surgery Cost Estimator
By procedure type
Dental Implant Cost
Per tooth estimate
IVF Cost Calculator
Cycle/medication cost
LASIK Cost Calculator
Prescription-based
Plastic Surgery Cost
By procedure
Hearing Aid Cost
Type/features pricing
Orthodontics Cost
Braces vs Invisalign
Retirement & Investment
Retirement planning & investment calculators
401k Calculator
Retirement growth
Roth IRA Calculator
After-tax growth
Traditional vs Roth IRA
Tax comparison
Social Security Benefits
Monthly benefit
RMD Calculator
Required distributions
FIRE Calculator
Financial independence
Retirement Income
Monthly income plan
Annuity Calculator
Lump vs payments
Pension Calculator
Benefit estimate
Compound Interest (Advanced)
Growth visualizer
Dollar Cost Averaging
DCA vs lump sum
Investment Fee Calculator
Expense ratio impact
Net Worth Calculator
Assets - liabilities
Millionaire Calculator
When you hit $1M
Emergency Fund Calculator
How much you need
Tax Tools
Tax calculators & planning tools
Federal Income Tax
Brackets + rate
State Income Tax
All 50 states
Capital Gains Tax
Short vs long term
Self-Employment Tax
1099 tax calculator
Quarterly Tax Estimator
Avoid penalties
W-4 Withholding
Optimize paycheck
Tax Refund Estimator
Owe or refund?
Payroll Tax Calculator
Employer FICA
Estate Tax Calculator
Threshold check
Gift Tax Calculator
Exclusion tracking
Property Tax Calculator
County/mill rate
Sales Tax Calculator
State + local
Crypto Tax Calculator
FIFO/LIFO taxes
Rental Property Tax
Deductions/depreciation
Tax Bracket Comparator
Year over year
Marriage Tax Calculator
Joint vs separate
Standard vs Itemized
Which saves more
Business Deduction Finder
Interactive checklist
Enterprise & B2B
Enterprise software cost & ROI calculators
CRM ROI Calculator
Revenue impact
ERP Cost Calculator
Implementation cost
Cloud Migration ROI
On-prem vs cloud
IT Infrastructure Cost
Build vs cloud
Cybersecurity Budget
Security spend calc
Data Analytics Platform Cost
Volume pricing
HR Software Cost
HRIS pricing
Accounting Software Compare
Feature compare
Marketing Automation ROI
Campaign revenue
Help Desk Software Cost
Ticket/agent pricing
PM Tool Comparator
Feature matrix
VoIP Phone System
Lines/features cost
Business Intelligence Cost
Users/data pricing
Managed IT Cost
Endpoints monthly
Disaster Recovery Cost
RTO/RPO solution
Cybersecurity
Security risk assessment & cost tools
Cyber Risk Assessment
Risk score
Data Breach Cost
Estimated cost
Ransomware Impact
Revenue loss
Compliance Cost Estimator
Framework cost
Pentest Scope Calculator
Price range
Security Tool TCO
Platform compare
Phishing Risk Calculator
Risk level
Cyber Insurance Needs
Coverage calc
Incident Response Cost
Breach total
Zero Trust Assessment
Readiness score
Security Training ROI
Risk reduction
Vulnerability Priority
CVSS fix order
SOC Staffing Calculator
Analysts needed
DLP Implementation Cost
Solution pricing
Cloud Security Posture
Risk score
Real Estate Investment
Property investment & rental calculators
Rental Property ROI
Annual return
Cap Rate Calculator
NOI/price rate
Cash on Cash Return
Cash return
1031 Exchange Calculator
Defer gains
Rental Income vs Expense
Monthly cash flow
Fix & Flip Profit
ARV/rehab profit
BRRRR Strategy Calculator
Buy/rehab/rent
Vacancy Rate Impact
Income loss
Property Management Fee
Management cost
Commercial RE Calculator
Lease analysis
Airbnb Profitability
Annual income
House Hacking Calculator
Offset mortgage
Small Business
Startup costs, loans & business planning tools
Startup Cost Calculator
Expected costs
Break Even Analysis
Units needed
Business Loan Affordability
Max loan
SBA Loan Calculator
SBA payments
Franchise Cost Calculator
Franchise fees
Business Valuation (SDE)
SDE earnings
Burn Rate Calculator
Cash runway
Employee Cost Calculator
True hire cost
Hiring ROI Calculator
Revenue impact
Contractor vs Employee
1099 vs W-2
Office Space Cost
Monthly cost
Inventory Turnover
Stock optimization
Education & Student
College costs, student loans & education ROI
College Cost Calculator
4-year total
529 Plan Calculator
College fund growth
Financial Aid Estimator
EFC/aid amount
Student Loan Repayment Compare
All plan types
PSLF Eligibility Checker
Forgiveness check
Coding Bootcamp ROI
Cost vs salary
MBA ROI Calculator
Tuition vs earnings
Online Degree Cost
School comparison
Trade School vs College
Compare ROI
Tuition Reimbursement
Benefit value
Length Converters
Meters to Feet
Length conversion
Kilometers to Miles
Distance conversion
Inches to Centimeters
Small lengths
Yards to Meters
Yard conversion
Miles to Kilometers
Distance conversion
Millimeters to Inches
Tiny lengths
Nautical Miles Converter
Marine distance
Light Years Converter
Cosmic distance
Micrometers to Millimeters
Micro lengths
Length Converter
All length units
Weight Converters
Kilograms to Pounds
Weight conversion
Ounces to Grams
Small weights
Stones to Kilograms
Body weight
Metric Tons Converter
Heavy weights
Milligrams to Grams
Tiny weights
Troy Ounces Converter
Precious metals
Carats to Grams
Gemstone weight
Grains to Grams
Grain conversion
Short Tons Converter
US tons
Weight Converter
All weight units
Temperature Converters
Volume Converters
Liters to Gallons
Liquid volume
Milliliters to Fluid Oz
Small volumes
Cups to Milliliters
Cooking volume
Tablespoons to Milliliters
Spoon measure
Teaspoons to Milliliters
Tiny volume
Pints to Liters
Pint conversion
Quarts to Liters
Quart conversion
Cubic Meters to Feet
Cubic volume
Barrels to Liters
Barrel volume
Volume Converter
All volume units
Speed Converters
Area Converters
Data & Digital Converters
Bytes Converter
Data size
Bits to Bytes
Bit conversion
Bandwidth Calculator
Network speed
Storage Converter
Disk size
Download Time Calculator
Transfer time
Data Transfer Rate
Transfer speed
Pixels to Centimeters
Pixel conversion
DPI Calculator
Print resolution
Aspect Ratio Calculator
Screen ratio
Screen Size Calculator
Display size
Pressure Converters
Energy Converters
Fuel Economy Tools
Time Converters
Misc Converters
Link & URL Security
Phishing Link Detector
Detect suspicious URLs
URL Unshortener
Expand short URLs
Link Masker
Create branded short links
Safe Link Preview
Preview URLs safely
Redirect Chain Checker
Trace URL redirects
Suspicious Domain Checker
Check domain patterns
Homograph Attack Detector
Detect lookalike chars
URL Defanger
Defang malicious URLs
Link Reputation Checker
Check URL blocklists
QR Code Scanner
Scan & verify QR codes
Email Security
Email Header Analyzer
Trace email origin
SPF Record Checker
Validate SPF records
DKIM Validator
Check DKIM signatures
DMARC Record Checker
Validate DMARC policy
Disposable Email Detector
Detect temp emails
Email Breach Checker
Check breach exposure
Phishing Email Analyzer
Detect email red flags
Email Obfuscator
Protect from scrapers
Password & Authentication
Passphrase Generator
Generate word passphrases
Password Entropy Calculator
Measure password bits
Breach Password Checker
Check breach databases
2FA Secret Generator
Generate TOTP secrets
TOTP Code Generator
Live 6-digit codes
Recovery Code Generator
Generate backup codes
API Key Generator
Secure random API keys
Secret Token Generator
Crypto-random tokens
Network Security
Port Scanner Guide
Common ports reference
HTTP Headers Checker
Grade security headers
SSL Certificate Decoder
Decode cert details
CSR Decoder
Decode signing requests
DNS Lookup Tool
Query DNS records
WHOIS Lookup
Domain registration info
IP Geolocation
Locate IP address
Subnet Calculator
CIDR & network ranges
IP Address Converter
Decimal/binary/hex IP
MAC Address Lookup
Identify manufacturer
Traceroute Visualizer
Visualize network path
Firewall Rule Generator
Generate iptables rules
Privacy Tools
EXIF Data Remover
Strip photo metadata
EXIF Data Viewer
View photo metadata
PDF Metadata Stripper
Remove PDF author info
Privacy Policy Generator
Generate policy
Terms of Service Generator
Generate ToS
Cookie Policy Generator
GDPR cookies
GDPR Compliance Checklist
Interactive checklist
Data Deletion Request
Template emails
Browser Fingerprint Viewer
See your fingerprint
WebRTC Leak Tester
Check IP leaks
Canvas Fingerprint Tester
Test canvas FP
Font Fingerprint Detector
Detect font tracking
Tracker Blocker Generator
Generate hosts file
User Agent Analyzer
Parse UA strings
Privacy Score Calculator
Rate browser privacy
Encryption Tools
Triple DES Encrypt
3DES encryption
Blowfish Encrypt
Blowfish cipher
ChaCha20 Encrypt
Stream cipher
RSA Key Pair Generator
Generate RSA keys
PGP Message Formatter
Format PGP blocks
File Encryptor
AES file encryption
Steganography Tool
Hide text in images
Caesar Cipher
Classic shift cipher
Vigenere Cipher
Polyalphabetic cipher
XOR Cipher
XOR encryption
One-Time Pad Generator
Random key pads
Hashing & Integrity
File Hash Calculator
Get file hashes
Hash Comparison Tool
Verify hash match
Checksum Verifier
Verify file integrity
HMAC Calculator
Compute HMAC
Hash Identifier
Detect hash algorithm
Rainbow Table Calculator
Estimate table size
Entropy Calculator
Measure randomness
Random Bytes Generator
Crypto-secure random
Web Security Tools
CSP Builder
Build Content Security Policy
CORS Policy Generator
Build CORS headers
SRI Hash Generator
Subresource integrity
XSS Filter Tester
Test sanitization
SQL Injection Reference
Defense patterns
Security Headers Grader
Grade response headers
HSTS Preload Checker
Check HSTS status
Mixed Content Detector
Find HTTP in HTTPS
Referrer Policy Generator
Control referrers
Permissions Policy Gen
Control browser features
Compliance & Audit
OWASP Top 10 Checklist
Security checklist
PCI DSS Checklist
Payment security
SOC 2 Readiness
SOC 2 checklist
ISO 27001 Checklist
InfoSec standard
HIPAA Checklist
Healthcare data
Incident Response Template
IR templates
Risk Assessment Calculator
Likelihood x impact
CVSS Score Calculator
Vulnerability scoring
Forensics & Analysis
Data Converters
JSON to YAML
Convert JSON to YAML format
YAML to JSON
Convert YAML to JSON format
JSON to XML
Convert JSON to XML format
XML to JSON
Convert XML to JSON format
JSON to CSV
Convert JSON arrays to CSV
CSV to JSON
Convert CSV data to JSON
JSON to TypeScript Interface
Generate TS interfaces from JSON
JSON to Go Struct
Generate Go structs from JSON
JSON to Python Dict
Convert JSON to Python dict
JSON to C# Class
Generate C# classes from JSON
JSON to Java Class
Generate Java classes from JSON
JSON to Rust Struct
Generate Rust structs from JSON
JSON to Swift Struct
Generate Swift structs from JSON
JSON to Kotlin Data Class
Generate Kotlin data classes
JSON to PHP Array
Convert JSON to PHP array
JSON Schema Generator
Generate JSON Schema from data
JSON Path Evaluator
Query JSON with JSONPath
JSON Tree Viewer
Visualize JSON as tree
CSV Viewer & Editor
View and edit CSV data
TSV to CSV Converter
Convert TSV to CSV format
Academic Tools
Plagiarism Similarity Checker
Check text similarity
Word Frequency Analyzer
Analyze word usage
Sentence Length Analyzer
Analyze sentence lengths
Paragraph Counter
Count paragraphs
Syllable Counter
Count syllables in text
Haiku Checker
Verify 5-7-5 pattern
Limerick Checker
Check limerick structure
Sonnet Structure Checker
Verify sonnet format
Anagram Solver
Find anagram combinations
Palindrome Checker
Check for palindromes
Rhyme Finder
Find rhyming patterns
Alliteration Detector
Detect alliteration
Reading Level Calculator
Flesch-Kincaid score
Gunning Fog Index
Text complexity score
Coleman-Liau Index
Grade level estimate
SMOG Index
Readability measure
Automated Readability Index
ARI readability score
Study Timer
Timed study sessions
Flashcard Reviewer
Review flashcards
Spaced Repetition Timer
Optimal review timing
Note Taking Template
Structured note templates
Cornell Notes Generator
Cornell method notes
Mind Map Template
Visual mind mapping
Outline Generator
Create document outlines
Bibliography Formatter
APA/MLA/Chicago format
In-Text Citation Generator
Generate citations
Footnote Formatter
Format footnotes
Abstract Generator Template
Write abstracts
Thesis Statement Helper
Craft thesis statements
Research Paper Outline
Research paper structure
Space & Astronomy Tools
Planet Weight Calculator
Your weight on other planets
Star Distance Calculator
Calculate stellar distances
Orbital Period Calculator
Calculate orbital periods
Rocket Equation Calculator
Tsiolkovsky rocket equation
Schwarzschild Radius
Black hole event horizon
Hubble Constant Calculator
Universe expansion rate
Redshift Calculator
Calculate cosmic redshift
Parallax Distance Calculator
Stellar parallax distance
Luminosity Calculator
Star luminosity & brightness
Apparent Magnitude
Star brightness magnitude
Moon Phase Calculator
Current & future moon phases
Sunrise/Sunset Calculator
Calculate sun times
Golden Hour Calculator
Photography golden hour
Blue Hour Calculator
Photography blue hour
Solar Eclipse Calculator
Predict solar eclipses
Lunar Eclipse Calculator
Predict lunar eclipses
ISS Tracker
Track space station
Satellite Orbit Calculator
Calculate satellite orbits
Drake Equation Calculator
Estimate alien civilizations
Asteroid Impact Calculator
Simulate asteroid impacts
Physics Calculators
Velocity Calculator
Calculate speed & velocity
Acceleration Calculator
Calculate acceleration
Force Calculator
F=ma force calculator
Work Calculator
Calculate work done
Power Calculator
Calculate power in watts
Kinetic Energy Calculator
Calculate kinetic energy
Potential Energy Calculator
Calculate potential energy
Momentum Calculator
Calculate momentum
Friction Calculator
Calculate friction force
Torque Calculator
Calculate torque
Density Calculator
Calculate density
Pressure Calculator
Calculate pressure
Buoyancy Calculator
Calculate buoyant force
Wave Speed Calculator
Calculate wave speed
Frequency to Wavelength
Convert freq & wavelength
Ohm's Law Calculator
V=IR calculator
Resistor Color Code
Decode resistor colors
Capacitance Calculator
Calculate capacitance
Inductance Calculator
Calculate inductance
RC Time Constant
RC circuit calculator
Decibel Calculator
Calculate decibel levels
Light Year Calculator
Convert light years
Escape Velocity Calculator
Calculate escape velocity
Gravitational Force
Calculate gravity
Pendulum Period Calculator
Calculate pendulum period
Spring Constant Calculator
Hooke's law calculator
Doppler Effect Calculator
Calculate Doppler shift
Snell's Law Calculator
Calculate refraction
Lens Equation Calculator
Thin lens formula
Mirror Equation Calculator
Mirror formula
Chemistry Calculators
Molecular Weight Calculator
Calculate molecular mass
Molarity Calculator
Calculate molarity
Dilution Calculator
M1V1=M2V2 calculator
pH Calculator
Calculate pH & pOH
Ideal Gas Law
PV=nRT calculator
Boiling Point Calculator
Boiling point elevation
Freezing Point Calculator
Freezing point depression
Electronegativity Difference
Bond type classifier
Oxidation Number Calculator
Calculate oxidation states
Reaction Balancer
Balance chemical equations
Mole Calculator
Convert moles & grams
Atomic Mass Calculator
Average atomic mass
Electron Configuration
Generate electron config
Isotope Calculator
Isotope mass & abundance
Half-Life Calculator
Radioactive half-life
Radioactive Decay
Decay rate calculator
Concentration Calculator
Convert concentrations
Osmotic Pressure
Calculate osmotic pressure
Enthalpy Calculator
Calculate enthalpy change
Entropy Calculator
Calculate entropy change
Gibbs Free Energy
ΔG = ΔH - TΔS
Bond Energy Calculator
Calculate bond energies
Percent Composition
Mass percent of elements
Empirical Formula
Find empirical formula
Limiting Reagent
Find limiting reagent
Geometry Tools
Area of Circle
Calculate circle area
Area of Triangle
Calculate triangle area
Area of Rectangle
Calculate rectangle area
Area of Trapezoid
Calculate trapezoid area
Area of Parallelogram
Calculate parallelogram area
Area of Ellipse
Calculate ellipse area
Area of Polygon
Regular polygon area
Perimeter Calculator
Calculate perimeter
Circumference Calculator
Calculate circumference
Volume of Sphere
Calculate sphere volume
Volume of Cylinder
Calculate cylinder volume
Volume of Cone
Calculate cone volume
Volume of Cube
Calculate cube volume
Volume of Pyramid
Calculate pyramid volume
Volume of Prism
Calculate prism volume
Surface Area Calculator
Calculate surface area
Pythagorean Theorem
a² + b² = c²
Distance Between Points
Calculate point distance
Midpoint Calculator
Find the midpoint
Slope Calculator
Calculate line slope
Equation of Line
Find line equation
Circle Equation
Standard & general form
Triangle Type Classifier
Classify triangles
Angle Calculator
Angle conversions
Arc Length Calculator
Calculate arc length
Sector Area Calculator
Calculate sector area
Diagonal Calculator
Calculate diagonals
Hypotenuse Calculator
Find the hypotenuse
Sine Calculator
Calculate sine values
Cosine Calculator
Calculate cosine values
Tangent Calculator
Calculate tangent values
Inverse Trig Calculator
Arcsin, arccos, arctan
Radian to Degree
Convert radians & degrees
Coordinate Converter
Cartesian to polar
3D Distance Calculator
3D point distance
Git & DevOps
Git Command Builder
Build git commands
Git Diff Viewer
View git diffs
.gitignore Generator
Generate .gitignore
Docker Command Builder
Build docker commands
Dockerfile Generator
Generate Dockerfiles
Docker Compose Generator
Generate docker-compose
Nginx Config Generator
Generate nginx config
.htaccess Generator
Generate .htaccess
README Generator
Generate README.md
LICENSE Generator
Generate license files
CHANGELOG Generator
Generate changelogs
Semantic Version Calculator
SemVer calculator
Code Utilities
Code Diff Viewer
Side-by-side diff
Code Screenshot Generator
Beautiful code images
Syntax Highlighter
Highlight code syntax
Code Line Counter
Count lines of code
Tab to Spaces
Convert tabs to spaces
Spaces to Tab
Convert spaces to tabs
Comment Stripper
Remove code comments
String Escape/Unescape
Escape special chars
Slug Generator
URL-friendly slugs
UUID v4 Generator (Bulk)
Generate bulk UUIDs
ULID Generator
Generate ULIDs
Nano ID Generator
Generate Nano IDs
GUID Generator
Generate GUIDs
Lorem Ipsum for Code
Test data generator
Fake Data Generator
Name/email/address data
Web Performance
Minification Savings
Estimate minification savings
Gzip Compression Estimator
Estimate gzip savings
Image Format Comparison
Compare image formats
Critical CSS Extractor
Extract critical CSS
Unused CSS Detector
Find unused CSS
Page Weight Calculator
Calculate page weight
Load Time Estimator
Estimate page load time
Breakpoint Tester
Test breakpoints
Viewport Resizer
Preview viewport sizes
Core Web Vitals
CWV reference guide
Database Tools
SQL to MongoDB
Convert SQL to MongoDB
MongoDB to SQL
Convert MongoDB to SQL
SQL Query Builder
Visual query builder
ERD Diagram Generator
Text-based ERD
Schema to Code
Schema to ORM code
CSV to SQL INSERT
CSV to SQL inserts
JSON to SQL INSERT
JSON to SQL inserts
SQL to JSON
SQL results to JSON
Connection String Builder
Build connection strings
Database Size Calculator
Estimate DB size
Security & Auth
CSP Header Generator
Build CSP headers
CORS Policy Generator
Generate CORS policy
SSL/TLS Version Checker
Check SSL/TLS info
Certificate Decoder
Decode PEM certificates
CSR Decoder
Decode CSR requests
SSH Key Fingerprint
Calculate SSH fingerprint
TOTP Code Generator
2FA code generator
Security Headers Reference
Security headers guide
XSS Payload Encoder
Encode XSS payloads
SQL Injection Tester
Safe SQL injection demo
Color & Design
HEX to RGB to HSL
Convert color formats
Color Palette Generator
Generate color palettes
Color Blindness Simulator
Simulate color blindness
WCAG Contrast Checker
Check contrast ratio
Tailwind Color Reference
Tailwind CSS colors
Material Design Colors
Material color palette
CSS Named Colors
All CSS color names
Color Shade Generator
Generate shades & tints
Gradient Palette Generator
Create gradient palettes
Brand Color Extractor
Extract brand colors
Math for Devs
Bitwise Calculator
AND, OR, XOR, NOT
Floating Point Inspector
IEEE 754 inspector
Number Base Converter
Convert any base
IP Subnet Calculator
Calculate subnets
CIDR Calculator
CIDR notation calc
Bitmask Calculator
Calculate bitmasks
Byte Order Converter
Endian converter
Character Code Lookup
ASCII/Unicode lookup
Vulnerability & CVE Tools
CVE Search Tool
Search vulnerability database
CVSS v3.1 Calculator
Calculate severity scores
Exploit Severity Classifier
Rate exploit risk
Attack Surface Calculator
Estimate attack surface
Threat Model Builder
STRIDE methodology tool
Risk Matrix Generator
Likelihood x impact matrix
Vulnerability Timeline
Create disclosure timeline
Patch Priority Calculator
Score patch urgency
Bug Bounty Scope Analyzer
Parse bounty scope
Security Audit Report
Generate audit reports
Blue Team / Defense Tools
Firewall Rule Generator
iptables/nftables rules
Snort Rule Builder
IDS rule generator
SIGMA Rule Builder
SIEM detection rules
Log Analysis Patterns
Security log regex
Alert Triage Checklist
SOC triage workflow
Incident Response Playbook
Step-by-step IR templates
Chain of Custody Form
Evidence tracking forms
Evidence Collection Checklist
Forensics evidence list
IOC Format Converter
STIX/OpenIOC/CSV convert
MITRE ATT&CK Navigator
Technique reference
Kill Chain Mapper
Map attack kill chain
Diamond Model Builder
Adversary analysis model
Threat Intelligence Report
Threat intel templates
Phishing Awareness Quiz
Create phishing quizzes
Security Policy Generator
Policy templates
Network Defense Tools
ACL Rule Builder
Access control lists
VPN Configuration Generator
WireGuard/OpenVPN config
DNS Sinkhole List Generator
Block malicious domains
Hosts File Generator
Ad/malware blocking
IP Blocklist Compiler
Merge threat feeds
Geo-IP Blocker
Block by country
Rate Limit Calculator
Optimal rate limits
Honeypot Log Analyzer
Parse honeypot logs
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