Interactive practice · explanations included

US, Imperial, and metric volume quiz

Six questions check whether you can keep US customary, Imperial, and metric units separate. Exact values are supplied when memorization is not the point.

Six questions check whether you can keep US customary, Imperial, and metric units separate. Exact values are supplied when memorization is not the point.

Intermediate · system awareness and decimal conversion
Question 1 of 6
Question 1Which gallon is larger?
Question 2One liter contains how many milliliters?
Question 3Which label is least ambiguous?
Question 4Using 1 US gal = 3.785411784 L, about how many liters are in 2 US gallons?
Question 5How many Imperial fluid ounces are in 1 Imperial gallon?
Question 6Which is the best estimate for 1 US fluid ounce?

Before you begin

Read every system label. Use these anchors: 1 US gallon = 3.785411784 L, 1 Imperial gallon = 4.54609 L, and 1 liter = 1,000 milliliters.

Accessibility: use Tab to move through choices, arrow keys within a radio group, and Enter or Space to activate controls. Feedback is announced by assistive technology.