Convert length, weight, temperature, data and more.
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How to use Unit Converter
Open the Unit Converter tool.
Paste or type your number into the input field.
The output updates as you type. Adjust the options if you need a different format.
Copy the result, or share the URL to hand the exact input to someone else.
About Unit Converter
Convert between units across six families: length, mass, data, speed, time and temperature. Pick a category, choose the from and to units, and the converted value updates live with a copy-ready summary.
Covers everyday units like km, miles, kg, pounds, MB, GB, km/h, mph, hours, seconds and °C/°F/K.
What people use it for
Convert kilometers to miles or meters to feet.
Convert kilograms to pounds, or megabytes to gibibytes.
Convert °C to °F, or km/h to mph.
Frequently asked questions
Which unit categories are included?
Length, mass, data size, speed, time and temperature, each with the common units.
Does it handle temperature properly?
Yes. Celsius, Fahrenheit and Kelvin use the correct offset conversions, not simple ratios.
Is it private?
Every calculation happens on this page, in your own browser. Your input is never sent to a server and never logged, which also means the tool keeps working when you are offline.