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Unit Converter Tool

Convert length, weight, area, volume, temperature, speed, pressure, data, and time units in real time as you type.

Last updated: 2026/10/16 Calculator Feedback & bug reports
Unit Converter Tool
0

Common conversions (tap to fill)

Conversion to all units

How to Use

1

Choose a category

Select the unit category you want to convert (length, weight, temperature, etc.) from the tabs.

2

Enter value and units

Type the value and pick the source and target units from the dropdowns.

3

View and copy

The result is calculated instantly. A full list of conversions to every unit is also shown and can be copied.

About the Unit Converter

A web tool that instantly converts between different units such as meters and feet, kilograms and pounds, Celsius and Fahrenheit, or hPa and atm. It supports 9 categories and dozens of units: length, weight, area, volume, temperature, speed, pressure, data, and time. A "Swap units" button and one-tap "Common conversions" make it fast to use. All calculations run in your browser and your numbers are never sent to any server.

Features

  • 9 CategoriesSwitch between length, weight, area, volume, temperature, speed, pressure, data, and time via tabs.
  • Real-time ConversionResults recalculate the moment you change the value or units. No waiting.
  • See All Units at OnceYour value is converted to every unit in the category for easy comparison.
  • Privacy FirstAll processing happens in your browser. Numbers are never sent to a server.

Use Cases

  • Convert ounces, pounds, and cups in overseas recipes
  • Convert height and weight to feet, inches, and pounds
  • Check cooking and oven temperatures (Celsius/Fahrenheit)
  • Convert real-estate areas like square meters and acres
  • Convert file sizes (KB, MB, GB, TB)
  • Check tire and atmospheric pressure (kPa, bar, atm, psi)

Related Tools & Guides

For task-specific conversions, try our dedicated tools and guide as well.

FAQ

Is the unit converter free to use?
Yes, it is completely free. No registration or installation required—just open it in your browser.
Are the numbers I enter stored on a server?
No. All conversions run locally in your browser with JavaScript, and the values you enter are never sent to or stored on any external server.
How is temperature converted?
Temperature uses an offset, not a simple ratio. We convert via Celsius using formulas like Fahrenheit = Celsius × 9/5 + 32 and Kelvin = Celsius + 273.15.
Does data size use 1000 or 1024 multipliers?
This tool uses binary prefixes common in computing (1 KB = 1024 bytes, 1 MB = 1024 KB, and so on). Bits are treated as 1 byte = 8 bits.
Does it support Japanese-specific units?
Yes. For area it includes tsubo, tatami, and are; for volume it includes go, sho, and cup. A tatami is calculated as about 1.62 m².
Can I use it on a smartphone?
Yes, it is fully responsive and works on smartphones, tablets, and PCs.
How do I quickly swap the source and target units?
Press the round "Swap units" button (the arrow icon) in the middle of the input area to switch the source and target units with one tap, recalculating the result instantly. You can also tap a "Common conversions" button to fill in popular pairs such as cm to inch or °C to °F at once.
Does it support pressure units (hPa, bar, atm, psi)?
Yes. The pressure category uses the pascal (Pa) as its base and converts between hectopascal (hPa), kilopascal (kPa), megapascal (MPa), bar, atmosphere (atm), millimeter of mercury (mmHg/Torr), and pounds per square inch (psi). It is handy for weather pressure or checking tire pressure.

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