Convert Imperial gallons to cubic inches
1 imp gal = 277.42 in³. Change the amount below, or read the formula and the reference table further down.
1 Imperial gallon equals
cubic inches
1 imp gal = 277.42 in³
The formula
Imperial gallons and cubic inches both measure volume from the same zero, so a single multiplier does the job.
in³ = imp gal × 277.42
Going the other way? Convert cubic inches to Imperial gallons.
Imperial gallons to cubic inches table
Common values, rounded for reading.
| Imperial gallons (imp gal) | Cubic inches (in³) |
|---|---|
| 1 | 277.42 |
| 2 | 554.84 |
| 3 | 832.26 |
| 4 | 1,109.68 |
| 5 | 1,387.1 |
| 6 | 1,664.52 |
| 7 | 1,941.94 |
| 8 | 2,219.36 |
| 9 | 2,496.77 |
| 10 | 2,774.19 |
| 15 | 4,161.29 |
| 20 | 5,548.39 |
| 25 | 6,935.49 |
| 30 | 8,322.58 |
| 40 | 11,096.78 |
| 50 | 13,870.97 |
| 75 | 20,806.46 |
| 100 | 27,741.94 |
| 250 | 69,354.86 |
| 500 | 138,709.72 |
| 1,000 | 277,419.43 |
Questions people ask
- How many cubic inches are in a Imperial gallon?
- One Imperial gallon equals 277.42 cubic inches.
- How do I convert Imperial gallons to cubic inches by hand?
- Multiply the number of Imperial gallons by 277.42. For a rough check, 277.42 is close enough for most everyday use.
- What is 1 Imperial gallon in cubic inches?
- 1 Imperial gallon is 277.42 cubic inches.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.