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UK Gallons to Cubic Meters (imp gal to m³) Converter

1 UK gallon (imp gal) = 0.00454609 cubic meters (m³). To convert UK gallons to cubic meters, multiply by 0.00454609: 25 imp gal × 0.00454609 = 0.113652 m³. Also searched as UK gallons to cubic metres.

1 imp gal = 0.00454609 m³
Convert the other way: Cubic Meters to UK Gallons

Quick facts

How to convert UK gallons to cubic meters

  1. Take the value in UK gallons.
  2. Multiply it by 0.00454609 (the number of cubic meters in one UK gallon).
  3. Round the result to the precision you need.
m³ = imp gal × 0.00454609

Worked example: 25 imp gal × 0.00454609 = 0.113652 m³.

To convert cubic meters back to UK gallons, multiply by 219.969, or divide by 0.00454609.

Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).

UK Gallons to Cubic Meters conversion table

UK Gallons to Cubic Meters conversion table
UK Gallons [imp gal]Cubic Meters [m³]
0.01 imp gal0.0000454609 m³
0.1 imp gal0.000454609 m³
1 imp gal0.00454609 m³
2 imp gal0.00909218 m³
3 imp gal0.01363827 m³
5 imp gal0.02273045 m³
10 imp gal0.0454609 m³
20 imp gal0.0909218 m³
50 imp gal0.2273045 m³
100 imp gal0.454609 m³
1000 imp gal4.54609 m³

imp gal to m³ chart from 1 to 100

Cubic Meters to UK Gallons conversion table

Cubic Meters to UK Gallons conversion table
Cubic Meters [m³]UK Gallons [imp gal]
0.01 m³2.199692483 imp gal
0.1 m³21.9969248299 imp gal
1 m³219.9692482991 imp gal
2 m³439.9384965982 imp gal
3 m³659.9077448973 imp gal
5 m³1099.8462414954 imp gal
10 m³2199.6924829909 imp gal
20 m³4399.3849659818 imp gal
50 m³10998.4624149544 imp gal
100 m³21996.9248299088 imp gal
1000 m³219969.2482990878 imp gal

UK Gallons vs Cubic Meters

UK GallonCubic Meter
Symbolimp galm³
Equals1 imp gal = 0.00454609 m³1 m³ = 219.969 imp gal

What is a UK gallon?

The imperial gallon, defined as exactly 4.54609 litres (UK Weights and Measures Act 1985); about 20% larger than the US gallon. Used in the UK and Canada for fuel economy (miles per gallon), garden and aquarium volumes, and older fuel prices.

What is a cubic meter?

The SI derived unit of volume, equal to 1,000 liters. Used for large volumes such as water usage, shipping containers, and concrete.

Frequently asked questions

How many cubic meters are in a UK gallon?

There are 0.00454609 cubic meters in 1 UK gallon (1 imp gal = 0.00454609 m³).

How many UK gallons are in a cubic meter?

There are 219.969 UK gallons in 1 cubic meter (1 m³ = 219.9692482991 imp gal).

How do I convert UK gallons to cubic meters?

Multiply the number of UK gallons by 0.00454609. For example, 10 imp gal × 0.00454609 = 0.0454609 m³. To convert back, multiply by 219.969.

What is 10 imp gal in cubic meters?

10 imp gal = 0.0454609 m³.

What is 100 imp gal in cubic meters?

100 imp gal = 0.454609 m³.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026