Cubic Feet to U.S. Gallons Converter

One cubic foot contains 12³ = 1,728 cubic inches. One U.S. liquid gallon contains 231 cubic inches. Therefore:

$1\text{ ft}^3=\frac{1{,}728}{231}=7.480519480519\ldots\text{ US gal}$

Ten cubic feet equal about 74.8051948052 US gal, 283.16846592 L, and 299.220779221 quarts. The conversion uses the ratio rather than a truncated decimal. Negative or invalid numeric inputs and results too large to represent are rejected. Gallons are U.S. liquid gallons, not imperial gallons.

Sources

• NIST, Guide for the Use of the International System of Units (SP 811) — SI units and accepted conversion guidance.
• NIST, Handbook 44, Appendix C — U.S. customary volume and length relationships used for dimensional arithmetic.