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, keeps its history, and remembers what you last entered.
Unit Converter
Converts length, weight, volume, temperature, area, speed and time between metric and imperial 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, HSL, HSV and CMYK, with a live preview.
Use it when: Moving a colour between design and code, or matching a screen colour to a print-ready CMYK value.
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 revisit any result from your history. Nothing is sent anywhere — 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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