Question 1

What liquid volume units are common?

Accepted Answer

Metric: ml, L. US: fl oz, cup, pint, quart, gallon. UK: similar but different sizes. Know which system you need.

Question 2

How do I convert between metric and imperial volume?

Accepted Answer

Key: 1 L = 33.8 fl oz (US). 1 gallon = 3.785 L. 1 cup = 237 ml. Use these for conversions.

Question 3

Are US and UK gallons the same?

Accepted Answer

No! US gallon = 3.785 liters. UK (Imperial) gallon = 4.546 liters. UK gallon is about 20% larger. Same applies to pints and fluid ounces.

Question 4

What's the most accurate way to measure volume?

Accepted Answer

For precision: measure by weight and convert using density. For liquids at eye level: read at the bottom of the meniscus curve.

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