Unit Conversion

Unit Converter

Easily convert length, weight, temperature, area, volume, speed, time, and data capacity between units such as the metric system and the imperial system.

Translation Result

Please select a value and unit.

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What is a unit conversion tool?

The unit conversion tool is a free tool that converts values expressed in different units to the desired unit. Simply select the type of conversion, enter the value, source unit, and target unit to see the result.It can be used in a wide range of situations—from daily life to work and study—such as converting product sizes and weights from other countries, distances and temperatures at travel destinations, recipe measurements, exercise speeds, and file sizes.

It supports units of length such as meters, kilometers, miles, feet, and inches, and units of weight such as kilograms, grams, pounds, and ounces.It can convert between Celsius, Fahrenheit, and Kelvin for temperature; square meters, hectares, and acres for area; and liters, U.S. gallons, and U.S. cups for volume. It also supports conversions for speed, time, and data capacity.

Calculations are performed within the user’s browser using JavaScript. The entered values are not sent to the server for unit conversion. While the number of digits displayed on the screen is adjusted for readability, calculations are performed internally using JavaScript’s numerical precision.

Supported unit categories

  • Length: meters, kilometers, miles, yards, feet, inches, nautical miles, etc.
  • Weight and mass: kilograms, grams, metric tons, pounds, ounces, stones, etc.
  • Temperature: Celsius, Fahrenheit, Kelvin.
  • Area and Volume: square meters, hectares, acres, liters, U.S. gallons, U.S. cups, etc.
  • Speed, time, and data capacity: km/h, mph, knots, seconds, hours, bytes, MB, MiB, etc.

How to Use

  1. Select the category of the unit you want to convert.
  2. Enter the number you want to convert. You can also enter decimals and negative values.
  3. Select the source and target units.
  4. The results are updated automatically, and clicking "Convert" will scroll to the results section.
  5. To convert in the opposite direction, use “Swap Units”; to use the result, use “Copy Result.”

Precautions for Use

  • Gallons, quarts, pints, cups, tablespoons, teaspoons, and fluid ounces are calculated using U.S. customary units. These values differ from their British counterparts.
  • For general conversion purposes, a year is calculated as 365.25 days. This calculation is not intended to determine a specific calendar period with absolute precision.
  • KB, MB, GB, and TB are decimal units representing a factor of 1,000, while KiB, MiB, GiB, and TiB are binary units representing a factor of 1,024.
  • Results may be rounded for display purposes. For applications requiring strict accuracy—such as legal, medical, research, construction, and safety management—please verify the results using official documents or specialized equipment.

Frequently Asked Questions

What units can be converted?

You can convert length, weight/mass, temperature, area, volume/capacity, speed, time, and data capacity.

Is it free to use?

Yes. You can use it for free without registration.

Will the entered values be sent to the server?

No. Conversion calculations are performed by JavaScript in the browser.

Can you convert Celsius to Fahrenheit?

Yes. In the temperature category, you can convert between Celsius, Fahrenheit, and Kelvin.

Can you convert miles to kilometers?

Yes. Please select the unit of length, set the source unit to miles, and the target unit to kilometers.

Can you convert pounds to kilograms?

Yes. You can select pounds or kilograms in the Weight/Mass category.

Is "gallon" referring to a U.S. gallon?

Yes. The gallon and related units of volume used in this tool are U.S. customary units.

What is the difference between MB and MiB?

MB is a unit of data capacity calculated as a power of 1,000, while MiB is calculated as a power of 1,024.

Why are the results rounded?

To make long decimal numbers easier to read, they are displayed with a maximum of 15 significant digits.

Can I enter negative numbers?

Yes. Negative values can be used, particularly for temperature conversions.

Can I swap the source and target?

Yes. You can instantly switch to the opposite direction using the "Swap Units" button.