Convert 15 gal to cup

How to convert US gallons to US cups

1. Formula: US cups = US gallons × 16
2. Put in the value: 15 US gallons.
3. Result: 240 US cups.

US gallons to US cups table

Converting the other way: US cups to US gallons

US gallons = US cups × 0.0625. So 240 US cups is back to 15 US gallons; one US cup is 0.0625 US gallons. See the US cups to US gallons table.

Quick estimate in your head

For a rough answer, multiply by about 20: 15 × 20 ≈ 300 cup, against the exact 240 cup (25.0% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A US gallon is bigger than a US cup, so the number of US cups must come out larger than the number of US gallons. If your answer goes the other way, divide instead of multiplying.

About the units

US gallon (gal) and US cup (cup) are both units of volume. One US gallon equals 16 US cups, and one US cup equals 0.0625 US gallons. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.

15 US gallons in other units

The most readable unit for this amount is imperial gallons (12.490113).

• 56,781.18 ml
• 56.781177 l
• 0.05678118 m3
• 11,520 tsp
• 3,840 tbsp
• 1,920 floz
• 240 cup
• 120 pt
• 60 qt
• 12.490113 impgal

How this answer was calculated

The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.

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