Unit Converter
Convert between different units of measurement for length, weight, volume, temperature, and more. All-in-one converter tool.
Below absolute zero (-273.15 °C / -459.67 °F / 0 K)
Method and limits
Enter a complete number; dot decimals are accepted. A decimal comma also works in comma-decimal locales. Blank is unavailable, not zero. No grouping or unit suffixes. Maximum 100 significant digits, exponent −100…100, 256 characters. Display rounds half away from zero to the selected precision. Calculations run in your browser; surrounding site requests still exist.
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About Unit Converter
Convert seven measurement categories with a selectable result grid. m → cm: ×100. °F = °C × 9/5 + 32; K = °C + 273.15.
1 m → 100 cm; 0 °C → 32 °F → 273.15 K.
Illustrative examples; no publication or accuracy certification.
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How to use
Choose units, enter a number, then read or copy the current result.
Pro Tips
- Change the precision to control display rounding.
Frequently Asked Questions
Categories separate dimensions: a metre measures length and a litre measures volume. Choose length, mass, temperature, speed, area, volume or time before choosing the source and destination units.
Length, mass, temperature, speed, area, volume and time. Temperature uses offsets; the other categories use the listed factors. Volume units use the existing US liquid approximations; regional variants are not selectable.