Capacity Commander - Customary Unit Estimation

U.S. Customary Capacity

Master Capacity Estimation

Test your measurement intuition! Select the most reasonable customary capacity unit or estimate for everyday objects.

fl oz

Fluid Ounce

Spoon / Medicine

c

Cup

Juice Box / Mug

pt

Pint

Ice Cream Tub

qt

Quart

Milk Carton

gal

Gallon

Large Milk Jug

Unit Capacity Guide

Learn conversions and standard customary benchmark sizes

Capacity Equivalents Cheat Sheet

1 Cup = 8 fl oz

1 Pint = 2 Cups

1 Quart = 2 Pints (4 Cups)

1 Gallon = 4 Quarts (16 Cups)

Fluid Ounce (fl oz) - Very Small

Used for tiny amounts of liquid like liquid medicine, a tablespoon, nail polish, or essential oils.

Benchmark: ~2 tablespoons = 1 fl oz

Cup (c) - Small

Standard glass of juice, school milk carton, mug of cocoa, or a bowl of soup.

Benchmark: 8 fluid ounces = 1 cup

Pint (pt) - Medium-Small

Small ice cream tub, personal water bottle, or a large drinking glass.

Benchmark: 2 cups = 1 pint (16 fl oz)

Quart (qt) - Medium-Large

Standard tall cardboard milk carton, motor oil container, or sports drink bottle.

Benchmark: 2 pints = 1 quart (32 fl oz)

Gallon (gal) - Large / Heavy

Large plastic jug of milk/water, bucket of liquid, bathtub, or swimming pool capacity.

Benchmark: 4 quarts = 1 gallon (128 fl oz)