Imperial gallon to cubic inch
Convert Imperial gallon (Imp gal) to cubic inch (in³). Use an editable volume converter, conversion formula, and reference table.
1 Imp gal = 277.4194328 in³
Conversion formula
One Imperial gallon equals 277.4194328 cubic inch. Multiply your value in Imperial gallon by this factor to get cubic inch. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 Imperial gallon:5 × 277.4194328 = 1,387.097164 in³
Conversion table
| Imperial gallon (Imp gal) | cubic inch (in³) |
|---|---|
| 0.01 | 2.774194328 |
| 0.1 | 27.74194328 |
| 1 | 277.4194328 |
| 2 | 554.8388656 |
| 5 | 1,387.097164 |
| 10 | 2,774.194328 |
| 25 | 6,935.48582 |
| 50 | 13,870.97164 |
| 100 | 27,741.94328 |
| 1000 | 277,419.4328 |
About these measurements
Volume describes three-dimensional space or liquid capacity.
The base reference used here is the liter. One Imperial gallon is 4.54609 base units; one cubic inch is 0.016387064 base units.
Important distinctions
US liquid measures and Imperial measures are different. Dry gallons and recipe cups are excluded.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert Imp gal to in³?
Multiply the quantity in Imp gal by 277.4194328. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the cubic inch to Imperial gallon converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
