Unit Converter

Convert between different units of measurement for length, weight, temperature, and more.

This free online tool allows you to convert between different units of measurement. Simply select a category, enter a value, and choose your units to convert between.

Conversions are processed in your browser and are not stored on our servers. No registration or email is required.

Common Length Conversions

From To Multiply By
1 mm0.1 cm0.1
1 mm0.001 m0.001
1 mm1.00000000e-6 km1.00000000e-6
1 mm0.03937008 in0.03937008
1 mm0.00328084 ft0.00328084
1 cm10 mm10
1 cm0.01 m0.01
1 cm1.00000000e-5 km1.00000000e-5
1 cm0.39370079 in0.39370079
1 cm0.0328084 ft0.0328084
1 m1,000 mm1,000
1 m100 cm100
1 m0.001 km0.001
1 m39.37007874 in39.37007874
1 m3.2808399 ft3.2808399

How to Use the Unit Converter

  1. Select a measurement category from the dropdown menu.
  2. Enter the value you want to convert in the "From" field.
  3. Select the source unit from the first dropdown next to the value.
  4. Select the target unit from the second dropdown.
  5. Click the "Convert" button to perform the conversion.
  6. The result will appear in the "To" field.
  7. You can click "Swap Units" to reverse the conversion direction.

About Unit Conversion

Unit conversion is the process of changing a measurement from one unit to another equivalent unit. This is essential for:

  • International Communication: Different regions use different measurement systems (metric vs imperial).
  • Scientific Work: Consistent units are crucial for accurate calculations and results.
  • Engineering: Converting between different units of measure is often necessary for design and construction.
  • Cooking: Converting between volume measurements (cups, tablespoons) or weight measurements (grams, ounces).
  • Travel: Understanding speed limits (mph vs km/h) or distances (miles vs kilometers) in different countries.

Available Conversion Categories

  • Length: Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.
  • Weight/Mass: Convert between milligrams, grams, kilograms, metric tons, ounces, pounds, stone, and US tons.
  • Temperature: Convert between Celsius, Fahrenheit, and Kelvin.
  • Area: Convert between square millimeters, square centimeters, square meters, hectares, square kilometers, square inches, square feet, square yards, acres, and square miles.
  • Volume: Convert between milliliters, liters, cubic meters, US and UK gallons, quarts, pints, and fluid ounces.
  • Time: Convert between milliseconds, seconds, minutes, hours, days, weeks, months, and years.
  • Speed: Convert between meters per second, kilometers per hour, miles per hour, knots, and feet per second.
  • Digital Storage: Convert between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes.