Why an in-browser unit converter?
Every engineer, scientist, designer, cook, and traveller eventually needs to convert between metric and imperial, or between SI base units and their derived forms. A search engine usually answers the question but with two costs: it sends your query to a remote server, and it gives you exactly one conversion at a time. A dedicated tool lets you bookmark, run conversions side by side, copy results in bulk, and trust that nothing about your input is logged.
Supported categories
- Length — millimetre, centimetre, metre, kilometre, inch, foot, yard, mile, nautical mile.
- Mass — milligram, gram, kilogram, tonne, ounce, pound, stone.
- Temperature — Celsius, Fahrenheit, Kelvin, Rankine.
- Time — millisecond, second, minute, hour, day, week, month, year.
- Volume — millilitre, litre, cubic metre, US gallon, imperial gallon, fluid ounce.
- Data — bit, byte, kilobyte, megabyte, gigabyte, terabyte, petabyte (binary IEC and decimal SI both supported).
Precision and accuracy
Results are computed using IEEE-754 double-precision floating point — the same arithmetic engine used by scientific calculators, spreadsheets, and most programming languages. Output is rounded to six significant figures by default, which is comfortably above the precision required for most engineering and household tasks. For applications requiring exact rational arithmetic, the underlying values are exposed in the source code for verification.