Measurement Conversions

Distance - Temperature - Clothing - Women's shoes - Men's shoes - Volume - Liquid volume - Units of Mass - Area

The Customary System of Measurement, also called the American System, is used more commonly in the US than the Metric System. However, in science classes, the International System of Units (Metric System) is used. Here are several charts to help you familiarise yourself with the American System as you prepare to go abroad:

Distance

American	Metric
1 inch (in)	2.54 cm
1 foot (ft) = 12 in	0.305 m
1 yard (yd) = 3 ft	0.914 m
1 mile (mi) = 1,760yd	1.609 km

Temperature

For those who want an exact conversion, the scientific formula for conversion is F= C(9/5) + 32.

However, for general approximations, a good rule of thumb for converting Celsius to Fahrenheit in your head is to double the temperature in Celsius and then add 30 (or subtract 30 from the temperature in Fahrenheit and then divide the difference by 2).

Example: (15 Celsius X 2) + 30 = 60 Fahrenheit.

Fahrenheit	Celsius
0	-15
10	-10
20	-5
30	0
40	5
50	10
60	15
70	20
80	25
90	30
100	35

Clothing Sizes

US	4	6	8	10	12	14
UK	8	10	12	14	16	18

Women's Shoes

US	5	6	7	8	9	10
UK	3	4	5	6	7	8

Men's Shoes

US	7	8	9	10	11	12
UK	6	7	8	9	10	11

Volume

American	Metric
1 cubic inch (in³)	16.39 mL
1 cubic foot (ft³)	28.32 L
1 cubic yard (yd³)	764.56 L 0.765 m³
1 acre foot (acre ft)	1.23 mL 1,233.48 m³

Liquid Volume

American	Metirc
1 teaspoon (tsp)	4.93 mL
1 tablespoon (Tbsp) = 3 tsp	14.79 mL
1 fluid ounce (fl oz) = 2 Tbsp	29.57 mL
1 cup (cp) = 8 fl oz	236.59 mL
1 pint (pt) = 2 cp	473.18 mL
1 quart (qt) = 2 pt	0.95 L
1 gallon (gal) = 4 qt	3.79 L
1 (liquid) barrel (bbl) = 1.5 gal	5.68 L

Units of Mass

American	Metric
1 ounce (oz)	28.4 g
1 pound (lb) = 16 oz	0.45 kg

Area

American	Metric
1 square survey foot (ft²) = 144 in²	0.09 m²
1 acre = 43,560 ft²	4,046.87 m²
1 section = 640 acres or 1 mi²(survey)	2.59 km²