One thing to remember when travelling to the US is:
1 US pint is a smaller quantity than 1 UK pint!
1 US pint = 0.5 liter
1 UK pint = 0.6 liter

Metric:

1 millimeter = 0.04 inch
1 centimeter = 0.4 inch
1 meter = 3 feet 3 inches
1 kilometer = 0.6 mile
1 gram = 0.04 ounce

Imperial:

1 inch = 2.5 centimeters
1 foot = 30 centimeters
1 mile = 1.6 kilometers
1 ounce = 28 grams
1 pound = 454 grams
1 US pint = 0.47 liter
1 US gallon = 3.8 liters