Convert between Systems

To convert measures between customary units and metric units, use the relationship given in the table. Note that, the values are approximate.

Units of Length

Customary Metric
1 inch (in.) 2.54 centimeters (cm)
1 foot (ft) 0.30 meter (m)
1 yard (yd) 0.91 meter (m)
1 mile (mi) 1.61 kilometers (km)

Units of Weight/Mass

Customary Metric
1 pound (lb) 453.6 grams (gm)
1 pound (lb) 0.4536 kilogram (kg)
1 ton (T) 907.2 kilograms (kg)

Units of Capacity

Customary Metric
1 cup (c) 236.59 milliliters (mL)
1 pint (pt) 473.18 milliliter (mL)
1 quart (qt) 946.35 milliliter (mL)
1 gallon (gal) 3.79 liters (L)