Cubic Feet to Gallons Converter
Convert ft³ to gal with precision – Fast, accurate, and free volume conversion
Quick Conversions
Conversion Formula
Converting cubic feet to gallons is straightforward using the standard conversion ratio. One cubic foot equals 7.480519 US liquid gallons.
Gallons = Cubic Feet × 7.480519
This conversion factor represents the number of US liquid gallons that fit within one cubic foot of space. The cubic foot measures three-dimensional volume, while the gallon measures liquid capacity.
Conversion Examples
Example 1: Convert 5 Cubic Feet to Gallons
Given: 5 ft³
Formula: Gallons = 5 × 7.480519
Calculation: 5 × 7.480519 = 37.402595
Result: 5 ft³ = 37.40 gallons
Example 2: Convert 12 Cubic Feet to Gallons
Given: 12 ft³
Formula: Gallons = 12 × 7.480519
Calculation: 12 × 7.480519 = 89.766228
Result: 12 ft³ = 89.77 gallons
Example 3: Convert 50 Cubic Feet to Gallons
Given: 50 ft³
Formula: Gallons = 50 × 7.480519
Calculation: 50 × 7.480519 = 374.02595
Result: 50 ft³ = 374.03 gallons
Cubic Feet to Gallons Conversion Table
| Cubic Feet (ft³) | Gallons (gal) | Cubic Feet (ft³) | Gallons (gal) |
|---|---|---|---|
| 1 ft³ | 7.48 gal | 26 ft³ | 194.49 gal |
| 2 ft³ | 14.96 gal | 27 ft³ | 201.97 gal |
| 3 ft³ | 22.44 gal | 28 ft³ | 209.45 gal |
| 4 ft³ | 29.92 gal | 29 ft³ | 216.94 gal |
| 5 ft³ | 37.40 gal | 30 ft³ | 224.42 gal |
| 6 ft³ | 44.88 gal | 35 ft³ | 261.82 gal |
| 7 ft³ | 52.36 gal | 40 ft³ | 299.22 gal |
| 8 ft³ | 59.84 gal | 45 ft³ | 336.62 gal |
| 9 ft³ | 67.32 gal | 50 ft³ | 374.03 gal |
| 10 ft³ | 74.81 gal | 75 ft³ | 561.04 gal |
| 15 ft³ | 112.21 gal | 100 ft³ | 748.05 gal |
| 20 ft³ | 149.61 gal | 150 ft³ | 1,122.08 gal |
| 25 ft³ | 187.01 gal | 200 ft³ | 1,496.10 gal |
Popular Volume Conversions
1 Cubic Foot
- US Gallons 7.48 gal
- UK Gallons 6.23 gal
- Liters 28.32 L
- Quarts 29.92 qt
10 Cubic Feet
- US Gallons 74.81 gal
- UK Gallons 62.29 gal
- Liters 283.17 L
- Quarts 299.22 qt
50 Cubic Feet
- US Gallons 374.03 gal
- UK Gallons 311.44 gal
- Liters 1,415.84 L
- Quarts 1,496.10 qt
Related Volume Conversions
Cubic feet can be converted to various other volume units:
Cubic Feet to Liters
1 ft³ = 28.3168 liters
Multiply cubic feet by 28.3168 to get liters
Cubic Feet to Cubic Meters
1 ft³ = 0.0283168 m³
Multiply cubic feet by 0.0283168 to get cubic meters
Cubic Feet to Cubic Inches
1 ft³ = 1,728 in³
Multiply cubic feet by 1,728 to get cubic inches
Cubic Feet to Quarts
1 ft³ = 29.9221 quarts
Multiply cubic feet by 29.9221 to get quarts
Cubic Feet to Pints
1 ft³ = 59.8442 pints
Multiply cubic feet by 59.8442 to get pints
Cubic Feet to Cubic Yards
1 ft³ = 0.037037 yd³
Multiply cubic feet by 0.037037 to get cubic yards
Frequently Asked Questions
How many gallons are in 1 cubic foot?
One cubic foot contains exactly 7.480519 US liquid gallons. This is the standard conversion factor used for volume measurements in the United States. For UK imperial gallons, 1 cubic foot equals 6.22884 gallons.
What is the formula to convert cubic feet to gallons?
The formula is: Gallons = Cubic Feet × 7.480519. Simply multiply the volume in cubic feet by 7.480519 to get the equivalent volume in US gallons. This conversion works for any volume measurement.
How do I convert gallons back to cubic feet?
To convert gallons to cubic feet, divide the number of gallons by 7.480519. The formula is: Cubic Feet = Gallons ÷ 7.480519. For example, 20 gallons equals 2.67 cubic feet.
Is there a difference between US and UK gallons?
Yes, US gallons and UK (imperial) gallons are different. One cubic foot equals 7.48 US gallons but only 6.23 UK gallons. The US gallon is approximately 3.785 liters, while the UK gallon is approximately 4.546 liters.
How much is 100 cubic feet in gallons?
100 cubic feet equals 748.05 US gallons. This calculation uses the formula: 100 × 7.480519 = 748.0519 gallons. This is commonly used for water tank capacity or swimming pool volume calculations.
What is a cubic foot?
A cubic foot is a unit of volume equal to the space occupied by a cube with sides measuring one foot in length. It’s commonly used in the United States for measuring volumes of spaces, containers, and materials. One cubic foot equals 12 inches × 12 inches × 12 inches.
When would I need to convert cubic feet to gallons?
This conversion is commonly needed for calculating water tank capacities, swimming pool volumes, aquarium sizes, HVAC system capacities, and storage container volumes. It’s particularly useful when you have dimensions in feet but need to know liquid capacity in gallons.
How many cubic feet is a 55-gallon drum?
A 55-gallon drum has a volume of approximately 7.35 cubic feet. This is calculated by dividing 55 gallons by 7.480519 (the conversion factor). Standard 55-gallon drums are commonly used for industrial storage and shipping.