Gallon (US) to Cubic Inches Converter
Volume · unit-converter
Convert Gallon (US) to Cubic Inches 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: Gallon (US) (gal)
To: Cubic Inches (in3)
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.
About Cubic Inches
The cubic inch is the volume of a cube one inch on a side. Engine displacement in the US and small volumes in machining use cubic inches.
How to convert gallons (us) to cubic inches
1 gallon (us) is equal to 230.99999975590504 cubic inches:
1 gal = (3.78541178 L ÷ 0.016387064 L) in3 = 230.99999975590504 in3
Each gallon (us) is defined as 3.78541178 L and each cubic inches as 0.016387064 L, so one gal equals 3.78541178 ÷ 0.016387064 in3 = 230.99999975590504 in3.
Let V(gal) be the numeric value of the same volume measured in Gallon (US) (gal), and V(in3) the value in Cubic Inches (in3). Then:
V(in3) = V(gal) × (3.78541178 / 0.016387064)
Equivalently, divide by how many gal fit into one in3 (liters per in3 divided by liters per gal):
V(in3) = V(gal) ÷ 0.00432900433358
Or: cubic inches = gallon (us) ÷ 0.00432900433358
Examples
Example #1: Convert 20 gal to cubic inches
20 gal = 20 gal × (3.78541178/0.016387064) in3 = 4619.99999512 in3
20 gal = 20 gal ÷ 0.00432900433358 = 4619.99999512 in3
Example #2: Convert 50 gal to cubic inches
50 gal = 50 gal × (3.78541178/0.016387064) in3 = 11549.9999878 in3
50 gal = 50 gal ÷ 0.00432900433358 = 11549.9999878 in3
Summary
To convert Gallon (US) to Cubic Inches, multiply the value in gal by the ratio of liters per gal divided by liters per in3. Equivalently: value_in3 = value_gal × (3.78541178 / 0.016387064). Numerically, 1 gal equals 230.99999975590504 in3.
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 Gallon (US) to Cubic Inches is 2.310000e+2 (1 gal = 230.99999975590504 in3).
Conversion tables
| Gallon (US) (gal) | Cubic Inches (in3) |
|---|---|
| 0.1 | 23.0999999756 |
| 1 | 230.999999756 |
| 2 | 461.999999512 |
| 3 | 692.999999268 |
| 4 | 923.999999024 |
| 5 | 1,154.99999878 |
| 6 | 1,385.99999854 |
| 7 | 1,616.99999829 |
| 8 | 1,847.99999805 |
| 9 | 2,078.9999978 |
| Gallon (US) (gal) | Cubic Inches (in3) |
|---|---|
| 10 | 2,309.99999756 |
| 20 | 4,619.99999512 |
| 30 | 6,929.99999268 |
| 40 | 9,239.99999024 |
| 50 | 11,549.9999878 |
| 60 | 13,859.9999854 |
| 70 | 16,169.9999829 |
| 80 | 18,479.9999805 |
| 90 | 20,789.999978 |
| 100 | 23,099.9999756 |
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).
- us-gallon to uk-gallonGallon (US) to Gallon (UK)
- us-gallon to uk-quartGallon (US) to Quart (UK)
- us-gallon to uk-pintGallon (US) to Pint (UK)
- us-gallon to us-quartGallon (US) to Quart (US)
- us-gallon to us-pintGallon (US) to Pint (US)
- us-gallon to uk-cupGallon (US) to Cup (UK)
- us-gallon to us-cupGallon (US) to Cup (US)
- us-gallon to uk-fluid-ounceGallon (US) to Fluid Ounce (UK)
- us-gallon to uk-tablespoonGallon (US) to Tablespoon (UK)
- us-gallon to uk-teaspoonGallon (US) to Teaspoon (UK)
- uk-gallon to cubic-inchGallon (UK) to Cubic Inches
- uk-quart to cubic-inchQuart (UK) to Cubic Inches