What can it convert?
This converter covers the six most-used measurement families: length (metre, kilometre, mile, yard, foot, inch), weight/mass (kilogram, gram, tonne, pound, ounce), temperature (Celsius, Fahrenheit, Kelvin), area (square metre, square foot, acre, hectare), speed (m/s, km/h, mph, knot) and digital data (byte to terabyte). Pick a category, type a value, and the result updates as you type.
How accurate are the conversions?
Every conversion uses the official international factor — for example 1 inch is exactly 0.0254 metres and 1 mile is 1609.344 metres. Temperature uses the standard Celsius/Fahrenheit/Kelvin formulas. Results are shown to six decimal places so you can round as needed.
Frequently asked questions
How do I convert cm to feet?
Choose the Length category, set "From" to Centimeter and "To" to Foot, then enter your value — the answer appears instantly.
Does it work offline?
Yes. Once the page has loaded, all conversions run in your browser with no internet needed.
Is my data sent anywhere?
No. Nothing you type is uploaded; the whole converter runs locally on your device.
Related tools
This tool runs entirely in your browser — nothing you enter is uploaded or stored.