UK Gallons to Cubic Inches Converter

How to convert imperial gallons to cubic inches

Formulain³ = gal (UK) × 277.4194328

Multiply the value in imperial gallons by 277.4194328. To go the other way, multiply by 0.00360465015 (or divide by 277.4194328).

An imperial gallon is larger than a cubic inch: one imperial gallon contains 277.4194328 cubic inches.

Worked examples

1 imperial gallon1 gal (UK) × 277.4194328 = 277.4194328 in³
5 imperial gallons5 gal (UK) × 277.4194328 = 1,387.097164 in³
10 imperial gallons10 gal (UK) × 277.4194328 = 2,774.194328 in³
20 imperial gallons20 gal (UK) × 277.4194328 = 5,548.388656 in³
100 imperial gallons100 gal (UK) × 277.4194328 = 27,741.94328 in³

Imperial gallons to cubic inches conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Imperial gallons to cubic inches: 0.1–10 gal (UK)
Imperial gallons (gal (UK))	Cubic inches (in³)
0.1 gal (UK)	27.741943 in³
0.25 gal (UK)	69.354858 in³
0.5 gal (UK)	138.70972 in³
1 gal (UK)	277.41943 in³
2 gal (UK)	554.83887 in³
3 gal (UK)	832.2583 in³
4 gal (UK)	1,109.6777 in³
5 gal (UK)	1,387.0972 in³
6 gal (UK)	1,664.5166 in³
7 gal (UK)	1,941.936 in³
8 gal (UK)	2,219.3555 in³
9 gal (UK)	2,496.7749 in³
10 gal (UK)	2,774.1943 in³

Imperial gallons to cubic inches: 12–1,000 gal (UK)
Imperial gallons (gal (UK))	Cubic inches (in³)
12 gal (UK)	3,329.0332 in³
15 gal (UK)	4,161.2915 in³
20 gal (UK)	5,548.3887 in³
25 gal (UK)	6,935.4858 in³
30 gal (UK)	8,322.583 in³
40 gal (UK)	11,096.777 in³
50 gal (UK)	13,870.972 in³
75 gal (UK)	20,806.457 in³
100 gal (UK)	27,741.943 in³
250 gal (UK)	69,354.858 in³
500 gal (UK)	138,709.72 in³
1,000 gal (UK)	277,419.43 in³

About the units

Imperial gallon (gal (UK))

Exactly 4.54609 L, about 1.2 US gallons. Used in the UK for fuel economy (mpg) figures. One imperial gallon equals 0.00454609 cubic meters (m³).

Cubic inch (in³)

The cubic inch (in³) is a unit of volume in the US customary system. One cubic inch equals 0.000016387064 cubic meters (m³).

Frequently asked questions

How many cubic inches are in one imperial gallon?

There are 277.4194328 cubic inches in one imperial gallon, and this value is exact by definition.

How do I convert imperial gallons to cubic inches?

Multiply the number of imperial gallons by 277.4194328. For example, 10 gal (UK) × 277.4194328 = 2,774.194328 in³.

How many imperial gallons are in one cubic inch?

One cubic inch equals 0.00360465015 imperial gallons. That is the reverse factor, 1 ÷ 277.4194328.

What is 10 imperial gallons in cubic inches?

10 gal (UK) = 2,774.194328 in³.

Is this gal (UK) to in³ converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.