Converters
Free Online Converters
Converters translate one representation of a value into another — metres into feet, 9am in Berlin into your local time, a HEX colour into RGB. They are the tools you reach for mid-task, so each one opens in its own tab and remembers what you last entered.
Unit Converter
Converts length, weight, temperature, volume, speed, data, pressure, energy, fuel economy and more, between metric, imperial and other units.
Use it when: Reading a recipe, spec sheet or set of instructions written for the other measurement system.
Time Zone Converter
Converts a time between zones and compares several cities side by side, including daylight saving shifts.
Use it when: Scheduling a call across countries, or working out whether a deadline in another zone has already passed.
Color Converter
Converts colour values between HEX, RGB and HSL, shows the CMYK equivalent, and has a live preview.
Use it when: Moving a colour between design and code, or getting a rough CMYK starting point for print.
Every converter works the same way as the calculators: open as many as you need in separate tabs, keep them grouped in a workspace, and save any result to your history. Conversions run in your browser, and you do not need an account.
Looking for something else?
Converters are one kind of tool. Browse the full catalogue by subject — finance, health, engineering, maths and more — where each converter sits alongside the calculators it is usually used with.
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