 # Main Units Used in the US

This is pretty odd for a non-American, or at least was for me as a European. In America the measurement system is different. Here is a list of the most widely used measures in America:

## Money

This is not really a measure, but I think its useful to include it here.
US Bills: \$1, \$2, \$5, \$10, \$20, \$50, \$100.
US Coins: 1 cent, 5c (nickel), 10c (dime), 25c (quarter), 50c, and 1\$.

Please note that the \$2 bill and the 50c and \$1 coins are quite rare. A peculiarity of the US coins is that the 10c (dime) physically is smaller than the 5c (nickel) coin.

## Distances, Length

The largest distance is the mile.

 1 mile = 1,60 km 1 km = 0,62 miles 1 yard = 0,91 m (approx = 1 m) 1 m = 1,1 yard = 39 inch 1 foot = 0,30 m (approx 3 feet = 1 m) 1 cm = 0,39 inch 1 inch = 2,54 cm

1 yard = 3 foot = 36 in

Does is sounds confusing at first sight? I bet you.

## Volumes

Main unit is the gallon. Here is its breakdown.

1 gallon = 3,78 liter
1 quart = 1/4 gallon = 0,95 liter Shortly, 1 gallon is almost = 4 litres, and a quart is approximately a litre. Gallon is widely used, when you buy gasoline at the gas station is measured in gallons. When you buy milk in the grocery store is packed in gallon and half-gallon units.

## Temperatures

The temperatures in the US are measured in Fahrenheit. In Europe the temperatures are measured in Celsius. There is a fancy conversion formula:

 F° = 32 + (9/5) C° C° = (5/9)x(F° - 32) You can approximate this roughly with F° ~ 32 + 2xC° Again you can approximate this with C° ~ (F° - 32) / 2 Thus 30 C° = 32 + 2x30 = 92 F° roughly. Thus 90 F° = 0.5x (90 - 32) = 0.5 x 58 = 29 C°

There are other units as well, but I did not used them almost at all during my normal casual city life, so I won't go into more details. You can take any dictionary and at the beginning or at the end of it there is usually a complete list of units.  