Cubic Feet to Gallon (US) Converter
Volume · unit-converter
Convert Cubic Feet to Gallon (US) with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use liter-based factors (US fluid measures, imperial UK units, SI cubic meters).
Calculator
From: Cubic Feet (ft3)
To: Gallon (US) (gal)
About Cubic Feet
The cubic feet is the volume of a cube one feet on a side (about 28.3168 liters). HVAC, construction, and US freight sometimes use cubic feet.
About Gallon (US)
The US liquid gallon is defined as 231 cubic inches (about 3.78541 liters). US recipes, fuel economy, and retail liquids typically use US gallons.
How to convert cubic feet to gallons (us)
1 cubic feet is equal to 7.48051948842406 gallon (us):
1 ft3 = (28.316846592 L ÷ 3.78541178 L) gal = 7.48051948842406 gal
Each cubic feet is defined as 28.316846592 L and each gallon (us) as 3.78541178 L, so one ft3 equals 28.316846592 ÷ 3.78541178 gal = 7.48051948842406 gal.
Let V(ft3) be the numeric value of the same volume measured in Cubic Feet (ft3), and V(gal) the value in Gallon (US) (gal). Then:
V(gal) = V(ft3) × (28.316846592 / 3.78541178)
Equivalently, divide by how many ft3 fit into one gal (liters per gal divided by liters per ft3):
V(gal) = V(ft3) ÷ 0.1336805554143
Or: gallon (us) = cubic feet ÷ 0.1336805554143
Examples
Example #1: Convert 20 ft3 to gallon (us)
20 ft3 = 20 ft3 × (28.316846592/3.78541178) gal = 149.610389768 gal
20 ft3 = 20 ft3 ÷ 0.1336805554143 = 149.610389768 gal
Example #2: Convert 50 ft3 to gallon (us)
50 ft3 = 50 ft3 × (28.316846592/3.78541178) gal = 374.025974421 gal
50 ft3 = 50 ft3 ÷ 0.1336805554143 = 374.025974421 gal
Summary
To convert Cubic Feet to Gallon (US), multiply the value in ft3 by the ratio of liters per ft3 divided by liters per gal. Equivalently: value_gal = value_ft3 × (28.316846592 / 3.78541178). Numerically, 1 ft3 equals 7.480519488424058 gal.
Relationship context
Both units are US customary fluid / volume in this tool’s grouping. Conversions use fixed liter equivalents, so factors are consistent for cooking, engineering, and cross-checking labels. The factor from Cubic Feet to Gallon (US) is 7.480519e+0 (1 ft3 = 7.480519488424058 gal).
Conversion tables
| Cubic Feet (ft3) | Gallon (US) (gal) |
|---|---|
| 0.1 | 0.7480519488 |
| 1 | 7.4805194884 |
| 2 | 14.9610389768 |
| 3 | 22.4415584653 |
| 4 | 29.9220779537 |
| 5 | 37.4025974421 |
| 6 | 44.8831169305 |
| 7 | 52.363636419 |
| 8 | 59.8441559074 |
| 9 | 67.3246753958 |
| Cubic Feet (ft3) | Gallon (US) (gal) |
|---|---|
| 10 | 74.8051948842 |
| 20 | 149.610389768 |
| 30 | 224.415584653 |
| 40 | 299.220779537 |
| 50 | 374.025974421 |
| 60 | 448.831169305 |
| 70 | 523.63636419 |
| 80 | 598.441559074 |
| 90 | 673.246753958 |
| 100 | 748.051948842 |
Conversions outside the hub list
The grid on the category page lists hub units only. These pairs include at least one unit outside that hub set (same tools: formulas and tables on each page).
- cubic-ft to uk-gallonCubic Feet to Gallon (UK)
- cubic-ft to uk-quartCubic Feet to Quart (UK)
- cubic-ft to uk-pintCubic Feet to Pint (UK)
- cubic-ft to us-quartCubic Feet to Quart (US)
- cubic-ft to us-pintCubic Feet to Pint (US)
- cubic-ft to uk-cupCubic Feet to Cup (UK)
- cubic-ft to us-cupCubic Feet to Cup (US)
- cubic-ft to uk-fluid-ounceCubic Feet to Fluid Ounce (UK)
- cubic-ft to uk-tablespoonCubic Feet to Tablespoon (UK)
- cubic-ft to uk-teaspoonCubic Feet to Teaspoon (UK)
- uk-gallon to us-gallonGallon (UK) to Gallon (US)
- uk-quart to us-gallonQuart (UK) to Gallon (US)