Standard measures:

1 tbsp = 3 tsp
1 oz = 2 tbsp
1 cup = 8 oz = 16 tbsp
1 pint = 2 cups
1 quart = 2 pints = 4 cups = 32 oz
1 gallon = 4 quarts = 8 pints = 16 cups = 128 oz

Metric measures:

1 L = 32 oz = 1 qt (roughly)
1 gallon = 4 L (roughly)
1 L = 1000 mL

Solid measures:

1 lb butter or margarine = 4 sticks = 2 cups
2 sticks butter or margarine = 1/2 lb. = 8 oz. = 1 cup = 16 Tbsp
1 stick butter or margarine = 1/4 lb. = 4 oz. = 1/2 cup = 8 Tbsp