Weights and Measurement

Weights and measurement are important information that enables people to quantify many things in life, ranging from mass and length to area and volume. These measurements are useful in many life situations, and they provide people with valuable information that describes, characterizes, represents, or predicts certain items, concepts, or outcomes. While many countries in the world are using metric units for their measurements, the US is still using customary units to measure things.

Here are some of the common weights and measurements in customary units as well as metric units:

Units of Measurement Used in the US

Length

12 inches (in) = 1 foot (ft)

3 feet (ft) = 1 yard (yd)

16½ feet (ft) = 1 rod (rd), perch, or pole

660 feet (ft) = 40 rods (rd) = 1 furlong (fur)

5,280 feet (ft) = 8 furlongs (fur) = 1 US statute mile (mi)

Approximately 6,076.115 feet (ft) = 1,852 meters = 1 international nautical mile

Area

144 square inches (in²) = 1 square foot (ft²)

1,296 square inches (in²) = 9 square feet (ft²) = 1 square yard (yd²)

272¼ square feet (ft²) = 1 square rod (sq rd)

43,560 square feet (ft²) = 160 square rods (sq rd) = 1 acre

640 acre = 1 square mile (mi²)

1 square mile (mi²) = 1 section of land

36 square miles (mi²) = 36 sections of land = 1 township

Volume

1,728 cubic inches (in³) = 1 cubic foot (ft³)

27 cubic feet (ft³) = 1 cubic yard (yd³)

Liquid Volume

4 gills (gi) = 1 pint (pt) = 28.875 cubic inches (in³)

2 pints (pi) = 1 quart (qt) = 57.75 cubic inches (in³)

4 quarts (qt) = 1 gallon (gal) = 231 cubic inches (in³)

Mass

1 grain (gr) = 0.000143 pound (lb)

27.344 grain (gr) = 1 dram (dr)

16 drams (dr) = 1 ounce (oz)

16 ounces (oz) = 1 pound (lb)

100 pounds (lb) = 1 US hundredweight (cwt)

20 US hundredweight (cwt) = 1 short ton

Metric Units of Measurement

Length

10 millimeters (mm) = 1 centimeter (cm)

10 centimeters (cm) = 1 decimeter (dm)

10 decimeters (dm) = 1 meter (m)

10 meters (m) = 1 dekameter (dam)

10 dekameters (dam) = 1 hectometer (hm)

10 hectometers (hm) = 1 kilometer (km)

Area

100 square millimeters (mm²) = 1 square centimeter (cm²)

100 square centimeters (cm²) = 1 square decimeter (dm²)

100 square decimeters (dm²) = 1 square meter (m²)

100 square meters (m²) = 1 square dekameter (dam²) = 1 are

100 square decameters (dam²) = 1 square hectometer (hm²) = 1 hectare (ha)

100 square hectometers (ha²) = 1 square kilometer (km²)

Volume

1000 cubic millimeters (mm³) = 1 cubic centimeter (cm³)

1000 cubic centimeters (cm³) = 1 cubic decimeter (dm³)

1000 cubic decimeters (dm³) = 1 cubic meter (m³)

Liquid Volume

10 milliliters (ml) = 1 centiliter (cl)

10 centiliters (cl) = 1 deciliter (dl)

10 deciliters (dl) = 1 liter (l)

10 liters (l) = 1 dekaliter (dal)

10 dekaliters (dal) = 1 hectoliter (hl)

10 hectoliters (hl) = 1 kiloliter (kl)

Mass

10 milligrams (mg) = 1 centigram (cg)

10 centigrams (cg) = 1 decigram (dg)

10 decigrams (dg) = 1 gram (g)

10 grams (g) = 1 dekagram (dag)

10 dekagrams (dag) = 1 hectogram (hg)

10 hectograms (hg) = 1 kilogram (kg)

1000 kilograms (kg) = 1 megagram (Mg) = 1 metric ton (t)