Unit Converter
Instantly convert between metric and imperial units. Length, weight, temperature...Instantly convert between metric and imperial units. Length, weight, temperature, area, volume, speed, time, and digital storage - all free, no signup...
1 m=0 km
Common Conversions
Features
Why Use Unit Converter?
Instant Results
Results update in real-time as you type. No buttons to click, no waiting - just instant conversion.
8 Unit Categories
Convert length, weight, temperature, area, volume, speed, time, and digital storage - all in one tool.
Bidirectional
Enter values in either field to convert in both directions. Use the swap button to quickly reverse.
Accurate Calculations
Precise conversions with proper decimal handling and scientific notation for extreme values.
Common Uses
Travel Planning
Convert miles to kilometers, Fahrenheit to Celsius, and gallons to liters for international trips.
Cooking & Recipes
Convert cups to milliliters, ounces to grams, and Fahrenheit to Celsius for recipes.
Education
Help with math and science homework involving metric and imperial unit conversions.
Engineering
Convert between measurement systems for construction, manufacturing, and design projects.
How It Works
Select a Category
Choose from 8 categories: Length, Weight, Temperature, Area, Volume, Speed, Time, or Digital Storage.
Choose Your Units
Select the unit you're converting from and to using the dropdown menus. Use the swap button to reverse direction.
Enter Your Value
Type your number in either field and see the conversion result instantly. You can also enter the result to calculate backwards.
Tips
Swap Button
Use the swap button between the two fields to quickly reverse the conversion direction without retyping.
Bidirectional Entry
You can type in either the 'from' or 'to' field - the other field updates automatically in both directions.
Temperature is Special
Temperature conversions use formulas (not simple ratios) since Celsius, Fahrenheit, and Kelvin have different zero points.