Find the row for your unit, then multiply by the factor. Values are rounded to four decimal places, and the ones marked exact are the official definitions. For any other value, use the converters linked at the end.
Length
From
To
Multiply by
inches
centimeters
2.54 (exact)
feet
centimeters
30.48 (exact)
yards
meters
0.9144 (exact)
miles
kilometers
1.6093
centimeters
inches
0.3937
meters
feet
3.2808
meters
yards
1.0936
kilometers
miles
0.6214
Weight
From
To
Multiply by
pounds
kilograms
0.4536
ounces
grams
28.3495
stone
kilograms
6.3503
kilograms
pounds
2.2046
grams
ounces
0.0353
kilograms
stone
0.1575
Volume (US and UK)
From
To
Multiply by
US gallons
liters
3.7854
UK gallons
liters
4.5461
US fluid ounces
milliliters
29.5735
UK fluid ounces
milliliters
28.4131
US cups
milliliters
236.5882
liters
US gallons
0.2642
liters
UK gallons
0.22
liters
US fluid ounces
33.814
Temperature
Temperature uses a formula, not a single factor: °F = °C × 9 ÷ 5 + 32.
Celsius
Fahrenheit
Where you see it
−40 °C
−40 °F
Where the scales meet
0 °C
32 °F
Water freezes
20 °C
68 °F
Room temperature
37 °C
98.6 °F
Typical body temperature
100 °C
212 °F
Water boils at sea level
180 °C
356 °F
Common baking setting
200 °C
392 °F
Common roasting setting
Converting other values
For exact results with any number, use the length converter or the other converters below. Each one shows the formula it uses.