Unit Converter
Convert length, weight, temperature, and more.
1 Centimeter (cm) = 0.393700787 Inch (in)
A unit converter changes a measurement from one unit into another. To convert units online, choose a category, type your value, and set the “From” and “To” units — the converted result appears instantly, with a swap button and a “Show all units” view for the whole category. Every conversion is calculated in your browser, with no sign-up.
Read the guide: Metric ↔ Imperial: The Everyday Conversion Cheat SheetAbout the Unit Converter
A fast, all-in-one converter for everyday measurements: length, weight, temperature, volume, area, speed, digital storage, time, pressure, and energy. Pick a category, type a value, and see the result instantly — with a swap button to flip the direction and a “Show all units” view that converts your value into every unit at once.
Everything is calculated in your browser, so there is nothing to install and no sign-up. Metric and imperial (US) units are both included, along with digital data units in both decimal (KB) and binary (KiB) forms.
How to use it
- 1Pick a category. Choose length, weight, temperature, and so on.
- 2Enter a value. Type the number and pick the from/to units.
- 3Read the result. The converted value updates instantly.
Frequently asked questions
How do I convert units?+
Pick a category tab (length, weight, temperature, and so on), type the number you want to convert, then set the “From” and “To” units in the dropdowns. The result updates instantly; use the swap button to flip the direction, or “Show all units” to see your value in every unit of that category at once.
What can this unit converter convert?+
It covers ten categories: length, weight, temperature, volume, area, speed, digital data, time, pressure, and energy — including both metric and US imperial units, and decimal (KB) and binary (KiB) data units. Temperature uses proper Celsius, Fahrenheit, and Kelvin formulas rather than a simple ratio.
How do I convert cm to inches?+
Choose the Length category, enter the value in centimeters, set the “From” unit to Centimeter and the “To” unit to Inch. 1 cm ≈ 0.3937 inches.
Are US and UK gallons different?+
Yes. A US gallon is about 3.785 liters and a UK (imperial) gallon is about 4.546 liters. Both are included under Volume.
What’s the difference between KB and KiB?+
KB is decimal (1000 bytes); KiB is binary (1024 bytes). Storage is usually sold in decimal units while operating systems often report binary — this tool supports both.
Is anything sent to a server?+
No. All conversions are computed locally in your browser.
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