Convert Imperial gallons to Cubic centimetres
1 imperial gallon is 4,546.09 cm³. One imperial gallon is exactly 4546.09 cubic centimetres.
One imperial gallon is 4546.09 cubic centimetres. To convert imperial gallons to cubic centimetres, multiply by 4546.09; to go the other way, divide by 4546.09 or multiply by 2.1997 × 10^-4. The factor is exact rather than rounded: it follows from NIST Handbook 130.
Factor checked against the defining standard · How we check
- Imperial gallons × 4546.09
1 * 4546.094,546.09 cm³
1 imperial gallon in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 922.3295428 tsp | × 922.329542788 |
| US tablespoons | 307.4431809 tbsp | × 307.443180929 |
| US fluid ounces | 153.7215905 fl oz | × 153.721590465 |
| US cups | 19.21519881 cup | × 19.2151988081 |
| US pints | 9.607599404 pt | × 9.60759940404 |
| US quarts | 4.803799702 qt | × 4.80379970202 |
| US gallons | 1.200949926 gal | × 1.2009499255 |
| milliliters | 4,546.09 ml | × 4,546.09 |
| liters | 4.54609 L | × 4.54609 |
| imperial gallons (as entered) | 1 gal (UK) | — |
| imperial quarts | 4 qt (UK) | × 4 |
| imperial pints | 8 pt (UK) | × 8 |
| imperial fluid ounces | 160 fl oz (UK) | × 160 |
| imperial gills | 32 gi (UK) | × 32 |
| cubic millimetres | 4,546,090 mm³ | × 4,546,090 |
| cubic centimetres | 4,546.09 cm³ | × 4,546.09 |
| cubic inches | 277.4194328 in³ | × 277.419432792 |
| cubic feet | 0.1605436532 ft³ | × 0.160543653236 |
| cubic yards | 0.005946061231 yd³ | × 0.00594606123096 |
| cubic metres | 0.00454609 m³ | × 0.00454609 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert imperial gallons to cubic centimetres? The converter and the working
- 1.Take the measurement in imperial gallons.
- 2.Multiply by 4546.09 — that is how many cubic centimetres fit in one imperial gallon.
- 3.To go back the other way, divide by 4546.09, or multiply by 2.1997 × 10^-4.
Worked example: 25 imperial gallons to cubic centimetres
- Formula
- gal (UK) × 4546.09 = cm³
- Arithmetic
- 25 × 4546.09 = 113,652.25 cm³
- Answer
- 25 gal (UK) = 113,652.25 cm³
The factor is exact, so this figure is exact too — only the display is rounded.
Imperial gallons to cubic centimetres conversion table
| Imperial gallons | Cubic centimetres |
|---|---|
| 1 gal (UK) | 4,546.09 cm³ |
| 2 gal (UK) | 9,092.18 cm³ |
| 3 gal (UK) | 13,638.27 cm³ |
| 4 gal (UK) | 18,184.36 cm³ |
| 5 gal (UK) | 22,730.45 cm³ |
| 6 gal (UK) | 27,276.54 cm³ |
| 7 gal (UK) | 31,822.63 cm³ |
| 8 gal (UK) | 36,368.72 cm³ |
| 9 gal (UK) | 40,914.81 cm³ |
| 10 gal (UK) | 45,460.9 cm³ |
| 12 gal (UK) | 54,553.08 cm³ |
| 15 gal (UK) | 68,191.35 cm³ |
| 20 gal (UK) | 90,921.8 cm³ |
| 25 gal (UK) | 113,652.25 cm³ |
| 50 gal (UK) | 227,304.5 cm³ |
| 100 gal (UK) | 454,609 cm³ |
| 200 gal (UK) | 909,218 cm³ |
| 300 gal (UK) | 1,363,827 cm³ |
| 500 gal (UK) | 2,273,045 cm³ |
| 1000 gal (UK) | 4,546,090 cm³ |
| 2000 gal (UK) | 9,092,180 cm³ |
| 5000 gal (UK) | 22,730,450 cm³ |
| 10000 gal (UK) | 45,460,900 cm³ |
What is an imperial gallon?
Exactly 4.54609 liters since 1985, and the reason UK and US fuel economy figures cannot be compared: it is 20% larger than the US gallon, so 40 mpg in Britain is about 33 mpg in America on the same car.
What is a cubic centimetre?
A thousandth of a litre, which makes it exactly a millilitre — the same volume under two names. Engine displacement uses cc and medicine uses ml for the identical quantity.
How many cubic centimetres are in an imperial gallon?
One imperial gallon is 4546.09 cubic centimetres, exactly. Going the other way, one cubic centimetre is 2.1997 × 10^-4 imperial gallons. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to an imperial gallon.
Cite this page
- APA
- Rule Calculator. (2026). Convert Imperial gallons to cubic centimetres. Rule Calculator. https://rulecalculators.com/convert/imperial-gallon-to-cubic-centimeter
- MLA
- "Convert Imperial gallons to cubic centimetres." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/imperial-gallon-to-cubic-centimeter.
- Chicago
- Rule Calculator. "Convert Imperial gallons to cubic centimetres." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/imperial-gallon-to-cubic-centimeter.
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Questions people actually ask
- How many cubic centimetres are in an imperial gallon?
- 4546.09. A thousandth of a litre, which makes it exactly a millilitre — the same volume under two names. Engine displacement uses cc and medicine uses ml for the identical quantity.
- How do I convert cubic centimetres back to imperial gallons?
- Divide by 4546.09, or multiply by 2.1997 × 10^-4 — they are the same operation.
Other volume conversions
Cubic centimetres to imperial gallons — the same conversion the other way.