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Unit Converter

Convert length, weight, temperature, area, volume and speed units instantly.

FreeNo loginBrowser basedPrivacy friendly
By MerQPrime Editorial TeamUpdated 2026-06-20Reviewed 2026-06-20Editorial policy
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Overview

About the Unit Converter

Convert between common metric and imperial units in six categories: length, weight, temperature, area, volume and speed. Enter a value, pick units and get an instant conversion — handy for travel, cooking, engineering homework and everyday measurements.

Benefits

How it works

  1. 1Select a category: length, weight, temperature, area, volume or speed.
  2. 2Enter the value you want to convert.
  3. 3Choose the source unit and target unit.
  4. 4The converted result updates instantly as you type.

Applications

Use cases

  • Convert km/h to mph when driving abroad.
  • Switch between kg and pounds for fitness tracking.
  • Convert Celsius and Fahrenheit for weather and cooking.
  • Translate square feet to square metres for real estate.

Support

Frequently asked questions

Which unit systems are supported?
The converter supports common metric (SI) units and US/imperial units across all six categories.
How accurate are conversions?
Conversions use standard conversion factors. Temperature uses exact formulas for Celsius, Fahrenheit and Kelvin.
Can I convert between different categories?
No. Each category converts within its own unit family — for example metres to kilometres, not metres to kilograms.

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Related tools, guides & pages

Unit Converter (Length, Weight & More) | MerQPrime