Unit Converter
Convert between different units of measurement online for free. Length, weight, temperature, area, volume, time, speed, and energy conversions with instant results.
8 Major Categories
Convert between length, weight, temperature, area, volume, time, speed, and energy units.
Conversion History
Save your last 50 conversions with favorites and copy functionality.
Instant Results
Real-time conversion with precise calculations and swap functionality.
How It Works
Select Category
Choose from 8 unit categories: length, weight, temperature, area, volume, time, speed, or energy.
Enter Value
Enter the value you want to convert and select the source unit.
Choose Target
Select the target unit you want to convert to.
Get Result
Click convert to get instant, accurate results with history tracking.
Supported Unit Categories
Length
Millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, nautical miles
Weight
Milligrams, grams, kilograms, pounds, ounces, metric tons, US tons, stone
Temperature
Celsius, Fahrenheit, Kelvin, Rankine with precise conversion formulas
Area
Square millimeters, square meters, square feet, acres, hectares
Volume
Milliliters, liters, gallons, cubic meters, cups, tablespoons, teaspoons
Time
Nanoseconds, seconds, minutes, hours, days, weeks, months, years
Speed
Meters per second, kilometers per hour, miles per hour, knots, speed of light
Energy
Joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, BTU
Frequently Asked Questions
About Unit Conversion
Our unit converter is a comprehensive tool designed to help you convert between different units of measurement quickly and accurately. Whether you're working on a science project, cooking, traveling, or any other activity that requires unit conversion, our tool provides instant results with precise calculations.
Key Features
- 8 major unit categories with 60+ different units
- Real-time conversion with instant results
- Conversion history with favorites and copy functionality
- Swap units with one click
- Precise calculations using international standards
- Responsive design for all devices
- No registration required - completely free to use
Supported Categories
Our unit converter supports 8 major categories: Length (9 units), Weight (8 units), Temperature (4 units), Area (9 units), Volume (12 units), Time (10 units), Speed (6 units), and Energy (8 units). Each category includes the most commonly used units with precise conversion factors.
Conversion Accuracy
All conversions use precise mathematical formulas and internationally recognized conversion factors. Temperature conversions use exact formulas, while other units use standard conversion factors. Results are displayed with appropriate precision based on the units being converted.