Where rounding matters
Rounding can affect very small or very large results, and binary data units differ from decimal vendor labels.
Unit converter for length, weight, temperature and data
Convert length, mass, temperature, and digital-storage units instantly in your browser. Free, no sign-up, nothing to upload.
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How the unit converter works
Convert common units online. Converts values across length, mass, temperature, and digital-storage units without requiring a file upload.
How to check a result
Confirm the source and destination symbols, then retain enough decimal precision for the real calculation.
Nothing is uploaded
The calculation runs in your browser, so there is no file, no queue, and nothing stored on the server.
Converting files rather than numbers? Start with the file converter directory or the compress and edit tools.
For durations such as clip lengths, use the time unit converter.
Unit Converter questions
Why does 1 GB show as 1,000 MB and not 1,024 MB?
Decimal units (kB, MB, GB) step by 1,000, as drive makers label them. Binary units (KiB, MiB, GiB) step by 1,024, as most operating systems count. Pick the pair that matches the label you are comparing against.
How precise are the results?
Conversions use exact factors and are rounded only for display. For engineering or billing work, keep enough decimal places for your own tolerance.