Convert / Free tool
Convert units
Convert a length, mass or temperature. All units in the selected group update together.
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How it works
Lengths and masses are converted through a reference unit: the meter or kilogram. Temperatures use a formula with an offset. These are temperature readings, not temperature differences.
1 inch = 2.54 cm · 1 pound = 0.45359237 kg · °F = °C × 9 ÷ 5 + 32
Which ounce and ton does this tool use?
The ounce is an avoirdupois unit of mass, not a fluid ounce. The tonne is the metric ton of 1,000 kg.
Useful next steps
Common ways to use this tool
- Convert meters, feet, inches and centimeters for measurements.
- Switch between kilograms, pounds and ounces for weight.
- Convert Celsius and Fahrenheit temperature readings.
Tips for an accurate result
Select the type of measurement first. A fluid ounce measures volume and is different from the mass ounce used here.