Imperial gallons to cubic meters
Type a value in imperial gallons to see it in cubic meters straight away, or type in the second box to convert back.
Loading the tool…
Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the imperial gallons box.
- Read the result in cubic meters as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
m³ = gal (imp) × 0.00454609
Multiply the value in imperial gallons by 0.00454609 to get cubic meters.
Example
To convert 25 gal (imp) to cubic meters: 25 × 0.00454609 = 0.113652 m³.
Conversion table
| Imperial gallons (gal (imp)) | Cubic meters (m³) |
|---|---|
| 1 | 0.00454609 |
| 2 | 0.00909218 |
| 3 | 0.0136383 |
| 5 | 0.0227305 |
| 10 | 0.0454609 |
| 20 | 0.0909218 |
| 25 | 0.113652 |
| 50 | 0.227305 |
| 100 | 0.454609 |
| 250 | 1.13652 |
| 500 | 2.27305 |
| 1,000 | 4.54609 |
About the units
- Imperial gallon
- The imperial (UK) gallon is defined by UK law as exactly 4.54609 liters.
- Cubic meter
- The cubic meter is the SI unit of volume, a cube one meter on each side, equal to exactly 1000 liters.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many cubic meters are in one imperial gallon?
1 gal (imp) = 0.00454609 m³ exactly.
How do I convert imperial gallons to cubic meters?
Use m³ = gal (imp) × 0.00454609. For example, 25 gal (imp) = 0.113652 m³.
How many imperial gallons are in one cubic meter?
1 m³ = 219.969 gal (imp).
What is the difference between a US gallon and an imperial gallon?
A US gallon is 3.785411784 liters and the imperial gallon used in the UK is 4.54609 liters, about 20% larger. Check where a figure comes from before converting, since US sources mean the US gallon.
How many milliliters are in a cup?
The US customary cup used in recipes is 236.5882365 mL and the metric cup is 250 mL. US nutrition labels round the cup to 240 mL, so the figure differs slightly between sources.