Cubic Foot to Gallon Converter
Convert cubic feet to US gallons. Multiply by 7.48052—1 ft³ ≈ 7.48 gal. For tanks, pools, and plumbing volume.
How to Convert Cubic foot to Gallon
Multiply cubic feet by 7.48052 (1 ft³ = 7.48051948 US gal).
Conversion Formula:
value * 7.48052Conversion Examples
Example: 1 ft³ to gallons
- 1 × 7.48052 ≈ 7.48 gal
1 ft³ ≈ 7.48 US gal
Standard conversion.
Example: 5 ft³ to gallons
- 5 × 7.48052 ≈ 37.4 gal
5 ft³ ≈ 37.4 gal
Small tank volume.
Conversion Chart
| Cubic foot | Gallon |
|---|---|
| 1 | 7 |
| 2 | 15 |
| 3 | 22 |
| 4 | 30 |
| 5 | 37 |
| 6 | 45 |
| 7 | 52 |
| 8 | 60 |
| 9 | 67 |
| 10 | 75 |
| 15 | 112 |
| 20 | 150 |
| 30 | 224 |
| 60 | 449 |
| 100 | 748 |
Conversion Formula
Multiply cubic feet by **7.48052** for US gallons.
Quick Conversion Tip
Multiply ft³ by 7.48 for a quick gallon estimate.
Unit Definitions
Cubic Foot (ft³)
A cubic foot is a US customary and imperial volume unit defined by a cube that measures one foot on each side.
1 cubic foot = 1728 cubic inches = 28.3168 liters ≈ 7.48052 US gallons
US Gallon (gal)
A US gallon is a common liquid volume unit used in the United States for fuel, beverages, and water.
1 US gallon = 3.78541 liters = 128 US fluid ounces = 16 US cups
Common Use Cases
- Water heater and storage tank capacity.
- Pool and pond volume in gallons.
- Plumbing and irrigation sizing.
- Homework on ft³ ↔ gallon math.
Understanding the Conversion
1 cubic foot ≈ 7.48052 US gallons. Multiply ft³ by 7.48052.
Examples: 1 ft³ ≈ 7.48 gal; 10 ft³ ≈ 74.8 gal. Used for water tanks, pool volume, and HVAC when specs mix cubic feet and gallons.
Divide gallons by 7.48052 for cubic feet.
FAQs
How many gallons in one cubic foot?
About 7.48052 US gallons.
How do I convert ft³ to gallons?
Multiply cubic feet by 7.48052.
How many gallons is 3 cubic feet?
3 × 7.48052 ≈ 22.44 gallons.