Unit converter
Convert length, mass, temperature, area, volume and speed.
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How to use this tool and limits
Choose a quantity, units and value. Inches, feet, miles and pounds use international definitions; US and UK gallons are separate. Results are rounded to 13 significant digits.
Frequently asked questions
Which ounce is used?
The avoirdupois mass ounce: 28.349523125 grams. It is not a troy ounce or a fluid ounce.