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Unit Converter

Convert between any units of length, weight, temperature, volume, speed, area, time, and digital storage. Select a category, enter a value, and get instant conversions across all units in that category simultaneously.

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Unit Conversion Results

1 meter equals…

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    All Length Conversions

    UnitValueScientific / Notes

    "The United States, Liberia, and Myanmar are the only countries that have not officially adopted the metric system. Almost every scientific measurement in the world uses SI units."

    — Unit Conversion Reference

    Common Conversion FAQs

    How many centimeters in an inch?

    Exactly 2.54 centimeters per inch, by definition. This has been the exact legal definition since 1959. So 1 foot = 30.48 cm, 1 yard = 91.44 cm, 1 mile = 1.609344 km exactly.

    How do you convert Fahrenheit to Celsius?

    Subtract 32, then multiply by 5/9. So 32°F = 0°C (freezing), 212°F = 100°C (boiling), 98.6°F = 37°C (body temperature). The reverse: multiply by 9/5, then add 32.

    How many pounds in a kilogram?

    Exactly 2.20462 pounds per kilogram. A 70 kg person weighs about 154 lbs. A quick mental approximation: multiply kg by 2.2.

    Quick Reference

    SI (Metric) Prefixes

    Kilo = ×1,000 • Mega = ×1,000,000 • Giga = ×109 • Milli = ×0.001 • Micro = ×10−6 • Nano = ×10−9. The metric system is base-10 throughout, making conversions simple multiplications.

    Imperial vs. US Customary

    Mostly the same, with key differences in fluid volume. A US gallon is 3.785 liters; a UK (Imperial) gallon is 4.546 liters. A US fluid ounce is slightly larger than a UK fluid ounce. This calculator uses US customary units.

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