All Free Tools
340 free tools and counting. Everything works without a sign-up, and most tools run entirely in your browser.
Calculators(53)
- Average Calculator
- Basic Calculator
- Basic Probability Calculator
- Circle Calculator
- Concrete Calculator
- Confidence Interval Calculator
- Correlation Coefficient Calculator
- Decimal to Fraction Calculator
- Distance Between Two Points Calculator
- Expected Value Calculator
- Exponent Calculator
- Factorial Calculator
- Final Grade Calculator
- Fraction Calculator
- Fuel Efficiency Calculator
- GPA Calculator
- Grade Percentage Calculator
- LCM & GCD Calculator
- Logarithm Calculator
- Margin of Error Calculator
- Matrix Calculator
- Mean Median Mode Calculator
- Midpoint Calculator
- Modulo Calculator
- P-value Calculator
- Paint Calculator
- Percent Error Calculator
- Percentage Calculator
- Percentage Change Calculator
- Percentage Increase/Decrease Calculator
- Percentile Calculator
- Perimeter Calculator
- Permutation and Combination Calculator
- Prime Number Checker
- Proportion Calculator
- Pythagorean Theorem Calculator
- Quadratic Formula Calculator
- Ratio Calculator
- Roman Numeral Converter
- Rounding Calculator
- Sample Size Calculator
- Scientific Notation Calculator
- Significant Figures Calculator
- Slope Calculator
- Square Footage Calculator
- Square Root Calculator
- Standard Deviation Calculator
- Triangle Area Calculator
- Trigonometry Calculator
- Variance and Standard Deviation Calculator
- Volume, Area & Depth Calculator
- Weighted Average Calculator
- Z-Score Calculator
Converters(52)
- Acres to Square Feet Converter
- Bar to PSI Converter
- Calories (kcal) to Kilojoules Converter
- Celsius to Fahrenheit Converter
- Celsius to Kelvin Converter
- CM to Inches Converter
- Cubic Meters to Liters Converter
- Cups (US) to Milliliters Converter
- Currency Converter
- Fahrenheit to Celsius Converter
- Fahrenheit to Kelvin Converter
- Feet to Inches Converter
- Feet to Meters Converter
- Fluid Ounces (US) to Milliliters Converter
- Gallons (US) to Liters Converter
- Grams to Ounces Converter
- Grams to Pounds Converter
- Hectares to Acres Converter
- Inches to Centimeters Converter
- Kelvin to Celsius Converter
- KG to LBS Converter
- Kilograms to Grams Converter
- Kilograms to Stones Converter
- Kilojoules to Calories (kcal) Converter
- Kilometers per hour to Miles per hour Converter
- Kilometers to Miles Converter
- Kilopascals to PSI Converter
- Knots to Miles per hour Converter
- Liters to Gallons Converter
- Megapascals to PSI Converter
- Meters per second to Kilometers per hour Converter
- Meters to Feet Converter
- Meters to Yards Converter
- Miles per hour to Meters per second Converter
- Miles to Feet Converter
- Miles to Kilometers Converter
- Milliliters to Cups (US) Converter
- MM to Inches Converter
- MPH to KM/H Converter
- Nautical Miles to Kilometers Converter
- Ounces to Grams Converter
- Pints (US) to Liters Converter
- Pounds to Kilograms Converter
- PSI to Bar Converter
- Quarts (US) to Liters Converter
- Square Feet to Square Meters Converter
- Square Kilometers to Square Miles Converter
- Square Meters to Square Feet Converter
- Stones to Kilograms Converter
- Tablespoons (US) to Milliliters Converter
- Teaspoons (US) to Milliliters Converter
- Yards to Meters Converter
Finance(32)
- Amortization Calculator
- APY Calculator
- Break-Even Calculator
- CAGR Calculator
- Car Loan Calculator
- Compound Interest Calculator
- Credit Card Payoff Calculator
- Debt Payoff Calculator
- Discount Calculator
- Down Payment Calculator
- Future Value Calculator
- Hourly to Salary Calculator
- Inflation Calculator
- Investment Calculator
- Investment Return Calculator
- Loan Payment Calculator
- Markup Calculator
- Monthly Budget Calculator
- Mortgage Calculator
- Present Value Calculator
- Price Per Unit Calculator
- Profit Margin Calculator
- Retirement Savings Calculator
- ROI Calculator
- Rule of 72 Calculator
- Salary Calculator
- Salary to Hourly Calculator
- Sales Tax Calculator
- Savings Goal Calculator
- Simple Interest Calculator
- Tip Calculator
- VAT Calculator
Health(20)
- BMI Calculator
- BMR Calculator
- Body Fat Percentage Calculator
- Body Surface Area (BSA) Calculator
- Calorie Calculator (TDEE)
- Calories Burned Calculator
- Daily Water Intake Calculator
- Heart Rate Zone Calculator
- Ideal Body Weight (IBW) Calculator
- Lean Body Mass Calculator
- Macro Calculator
- One-Rep Max (1RM) Calculator
- Ovulation Calculator
- Pregnancy Due Date Calculator
- Protein Intake Calculator
- Running Pace Calculator
- Sleep Calculator
- TDEE Calculator
- Waist-to-Hip Ratio Calculator
- Walking Calorie Calculator
PDF Tools(10)
Text(24)
- Add Prefix and Suffix to Each Line
- Bionic Reading Converter
- Caesar Cipher Encoder/Decoder
- Character Counter
- Citation Generator
- Diff Checker Text Compare
- Fancy Text Generator
- Find and Replace Text
- Invisible Character Generator
- Line Counter
- Lorem Ipsum Generator
- Morse Code Translator
- Online Notepad
- Reading Time Estimator
- Remove Duplicate Lines
- Remove Empty Lines
- Remove Extra Spaces
- Remove Line Breaks
- Sort Lines Alphabetically
- Text Case Converter
- Text Reverser
- Text to Slug Converter
- Word Counter
- Word Frequency Counter
Developer(34)
- ASCII Table
- Aspect Ratio Calculator
- Barcode Generator
- Base64 Encoder & Decoder
- Binary to Decimal Converter
- Bit and Byte Converter
- Chmod Calculator
- Code to Image
- Credit Card Number Validator (Luhn)
- Cron Expression Generator
- CSS Border Radius Generator
- CSS Box Shadow Generator
- CSS Gradient Generator
- CSV to JSON Converter
- Cubic Bezier Generator
- Hash Generator
- Haversine Distance Calculator
- HSL to RGB Color Converter
- HTML Entity Encoder and Decoder
- JSON Formatter & Validator
- JSON Minifier
- JSON Validator
- JWT Decoder
- Markdown to HTML Converter
- Number Base Converter
- Pixels to REM Converter
- QR Code Generator
- Regex Tester
- Relative Luminance Calculator
- SQL Formatter
- Subnet (CIDR) Calculator
- Text to Binary Converter
- Unix Timestamp Converter
- URL Encoder & Decoder
Security(2)
Random(5)
Date & Time(15)
- Add or Subtract Days Calculator
- Age Calculator
- Business Days Calculator
- Countdown Timer
- Countdown to Date
- Countdown to Date Calculator
- Date Difference Calculator
- Day of the Week Calculator
- Days Until Calculator
- Online Stopwatch
- Time Duration Calculator
- Time Zone Converter
- Week Number Calculator
- Work Hours Calculator
- World Clock & Time Zone Converter
Image(22)
- Base64 to Image Converter
- Compress Image to KB
- Crop Image
- Favicon Generator
- Flip Image
- GIF Maker
- HEIC to JPG Converter
- Image Compressor
- Image Filters
- Image Resizer
- Image to Base64 Converter
- JPG to PNG Converter
- JPG to WebP Converter
- Meme Generator
- Pixelate Image
- PNG to JPG Converter
- PNG to WebP Converter
- Rotate Image
- SVG to PNG Converter
- Watermark Image
- WebP to JPG Converter
- WebP to PNG Converter
Color(9)
SEO & Marketing(7)
Science & Engineering(51)
- Acceleration Calculator
- Battery Capacity (mAh) Calculator
- Buoyancy Force Calculator
- Capacitive Reactance Calculator
- Capacitor Energy Calculator
- Centripetal Force Calculator
- Circular Motion Calculator
- Combined Gas Law Calculator
- Decibel Calculator
- Density Calculator
- Dilution Calculator
- Dynamic Pressure Calculator
- Flow Rate Calculator
- Force Calculator
- Free Fall Calculator
- Friction Calculator
- Gear Ratio Calculator
- Half-Life Calculator
- Heat Engine Efficiency Calculator
- Hooke's Law Calculator
- Ideal Gas Law Calculator
- Inductive Reactance Calculator
- Kinetic Energy Calculator
- LED Resistor Calculator
- Mechanical Efficiency Calculator
- Molarity Calculator
- Mole Calculator
- Momentum Calculator
- Ohm's Law Calculator
- Parallel Resistance Calculator
- Percent Yield Calculator
- pH Calculator
- Potential Energy Calculator
- Power Calculator
- Power Dissipation Calculator
- Pressure Calculator
- Projectile Motion Calculator
- RC Time Constant Calculator
- Resistor Color Code Calculator
- Reynolds Number Calculator
- Scientific Calculator
- Specific Heat Calculator
- Spring Potential Energy Calculator
- Stress Strain Calculator
- Thermal Expansion Calculator
- Torque Calculator
- Transformer Turns Ratio Calculator
- Voltage Divider Calculator
- Wave Equation Calculator
- Wavelength Frequency Calculator
- Work Calculator