Unit Converter
Convert length, weight, temperature, volume, area, speed, and digital storage instantly. Accurate and private — everything is computed in your browser.
Common conversions people search for
cm to inches, kg to lbs, °C to °F, miles to km, m² to ft², liters to gallons, MB to GB. This converter handles all of them with full precision and switches instantly as you type — no page reloads, no waiting.
Categories it covers
- Length: mm, cm, m, km, inch, foot, yard, mile.
- Weight / mass: mg, g, kg, tonne, ounce, pound, stone.
- Temperature: Celsius, Fahrenheit, Kelvin.
- Volume: ml, liter, teaspoon, tablespoon, cup, pint, gallon.
- Digital data: bytes, KB, MB, GB, TB.
Why conversions trip people up
Everyday conversions hide subtle traps. A US gallon and an imperial (UK) gallon are different sizes. A "ton" can mean a metric tonne, a US short ton, or a UK long ton. Temperature isn't a simple multiplication — it needs an offset, which is why 0 °C equals 32 °F, not 0. This converter uses exact, internationally defined factors so you don't have to remember which is which. For a worked example, see our guide on how many grams are in an ounce.
Accurate and instant
Every result uses precise factors — for instance, 1 inch is defined as exactly 2.54 cm — and the math runs entirely in your browser, updating the moment you type. Nothing is uploaded, and it keeps working offline once the page has loaded.
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Frequently asked questions
How accurate are the conversions?
They use exact internationally-defined factors (e.g. 1 inch = 2.54 cm exactly). Temperature uses the precise affine formulas.
Does it work offline?
Yes. Once the page loads, all math runs locally in your browser with no network calls.