Cubic feet to Gallons (US) Converter
Convert cubic feet (ft³) to gallons (US) (gal) instantly. Type a value above and the result updates while you type. 1 cubic foot equals 7.48052 gallons (US).
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
1 cubic foot = 7.48052 gallons (US)
Multiply the cubic feet value by 7.48052 to get gallons (US). Or divide by 0.133681 to go the other way.
Cubic feet to gallons (US) conversion table
| ft³ | gal |
|---|---|
| 1 | 7.48052 |
| 2 | 14.961 |
| 3 | 22.4416 |
| 4 | 29.9221 |
| 5 | 37.4026 |
| 6 | 44.8831 |
| 7 | 52.3636 |
| 8 | 59.8442 |
| 9 | 67.3247 |
| 10 | 74.8052 |
| 15 | 112.208 |
| 20 | 149.61 |
| 25 | 187.013 |
| 50 | 374.026 |
| 75 | 561.039 |
| 100 | 748.052 |
Worked examples
- 5 ft³ × 7.48052 = 37.4026 gal
- 30 ft³ × 7.48052 = 224.416 gal
- 165 ft³ × 7.48052 = 1234.29 gal
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
Frequently asked questions
How many gallons (US) are in 1 cubic foot?
1 cubic foot equals 7.48052 gallons (US) (ft³ → gal).
How do you convert cubic feet to gallons (US)?
Multiply the number of cubic feet by 7.48052. For example: 10 ft³ × 7.48052 = 74.8052 gal.
What is 50 ft³ in gal?
50 ft³ equals 374.026 gal.
Which is bigger: 1 cubic foot or 1 gallon (US)?
1 cubic foot is bigger: it equals 7.48052 gallons (US).