Unit Converter

Length, mass, temperature, area, volume, time, and data storage cover most everyday conversions, from centimeters to inches and kilograms to pounds to Celsius and Fahrenheit. Each category groups its own set of units, so switching categories also resets which units are shown.

Conversions use exact, internationally defined factors rather than rounded shortcuts, and results are shown to up to ten significant digits. That's precise enough for lab work, recipes, or homework — for extremely large or tiny values, the result switches to scientific notation instead of a long string of digits.

No. The 'convert' library runs as JavaScript inside the page, and the value you type is converted on your own device the moment you finish typing. There's no backend involved, so nothing about what you're converting is recorded or transmitted.

kB and MB follow the decimal system, where 1 kB equals 1,000 bytes, matching how storage manufacturers usually advertise capacity. KiB and MiB follow the binary system used internally by operating systems, where 1 KiB equals 1,024 bytes — which is why a drive's stated size and the size your computer reports rarely match exactly.

Very large or very small results — beyond about a quadrillion, or smaller than a billionth — switch to scientific notation so the number stays readable instead of showing a long string of zeros. This only affects how extreme values are displayed; the underlying conversion is exactly the same either way.

Yes, though temperature works a little differently under the hood — Celsius, Fahrenheit, and Kelvin need an added offset, not just a multiplication, unlike length or mass conversions. You don't need to think about that difference; pick your units and type a value, and the correct formula is applied automatically.

A quick search bar conversion is fine for a single common unit pair, but this tool covers more categories in one place, including area, volume, and both decimal and binary data units that search engines often skip. Keeping a category open with quick chips also makes it faster to run several related conversions in a row without retyping a search query each time.