Length Unit Converter
Convert length units instantly in your browser.
Unit Converters
Convert length, weight, temperature, volume, area, speed, data size, and number bases in your browser. Browse this curated wowTools collection of local browser
Overview
Unit Converters answers the everyday “how much is that in…” question without a search detour. Length, weight, temperature, volume, area, and speed cover physical measurements; data size and number base conversion cover the digital ones. Each tool states its units explicitly so you never have to guess whether a gallon is the US or imperial variety.
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Weight Unit Converter
Convert weight and mass units locally.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin instantly.
Volume Unit Converter
Convert volume units for cooking, science, and more.
Area Unit Converter
Convert area units like acres, hectares, and m².
Speed Unit Converter
Convert speed units like mph, km/h, and knots.
Data Size Converter
Convert bytes, KB, MB, GB, TB, and binary units.
Number Base Converter
Convert bin/oct/dec/hex locally with BigInt.
Roman Numeral Converter
Convert numbers to and from Roman numerals.
Why these tools
Conversion mistakes usually come from remembered factors and silent rounding rather than hard maths. Grouping the converters keeps unit names visible, makes precision an explicit choice, and puts the digital units next to the physical ones where mixed calculations happen.
Related articles
- Unit conversion without the rounding trapsWhy unit conversions go wrong—ambiguous unit names, offset scales, decimal versus binary prefixes—and how to keep results honest.
- When to reach for Data Size ConverterConvert bytes, KB, MB, GB, TB, and binary units. A practical guide to Data Size Converter: when it fits, how to get a reliable result, and the mistakes worth avoiding.
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Frequently asked questions
- How precise are these conversions?
- Calculations use standard factors in double precision, which is far more accurate than the source measurements in everyday use. Round the result to the precision your original figure justified.
- Do the volume units distinguish US and imperial measures?
- Yes. Gallons, pints, and fluid ounces differ between systems, so each option is labelled explicitly rather than assuming a locale.
- Why does 1 GB not equal 1024 MB here?
- Decimal and binary prefixes are separate units. Data Size Converter exposes both, so you can convert to gibibytes when a limit is really a power of two.
- Can I convert between number bases?
- Number Base Converter handles binary, octal, decimal, and hexadecimal using arbitrary-precision arithmetic, so long identifiers do not lose digits.
- Are conversions done on a server?
- No. Each converter computes in your browser, so entering measurements from private documents does not send them anywhere.