Meet the Unit Converter
Convert between units instantly: length, weight, temperature, volume, area, speed, time, pressure, energy and data. Type a value, pick your units and see the result update in real time.
- Free to use
- No signup
- Nothing to install
- Works in any modern browser
Illustration. Open the tool for the real thing.
What is the Unit Converter?
Convert between units instantly: length, weight, temperature, volume, area, speed, time, pressure, energy and data. Type a value, pick your units and see the result update in real time. It is handy for cooking, travel, school, engineering and everyday questions.
Metric and imperial units sit side by side, so you can go from kilometres to miles, kilograms to pounds, or Celsius to Fahrenheit without doing the maths yourself.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
From millimetres to miles, grams to tons and bits to terabytes.
The answer updates as you type, with no button to press.
Switch between systems with one selection.
Uses standard conversion factors for reliable results.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
How it compares
A plain look at this tool next to the usual alternative.
| This calculator | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
Questions people ask
How do I convert kilometres to miles?
Multiply kilometres by 0.621371. For example, 10 km is about 6.21 miles.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example, 20 C is 68 F.
Is the unit converter free?
Yes. It is free to use with no signup.
How accurate are the conversions?
They use standard, internationally accepted conversion factors.
How do I use the Unit Converter?
1. Choose a category such as length or weight. 2. Enter the value you want to convert. 3. Select the from and to units. 4. Read the converted value instantly.
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Try the Unit Converter now
Convert between units instantly: length, weight, temperature, volume, area, speed, time. Free to use.
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