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Cubic Feet to UK Gallons (ft³ to imp gal) Converter

1 cubic foot (ft³) = 6.22884 UK gallons (imp gal). To convert cubic feet to UK gallons, multiply by 6.22884: 25 ft³ × 6.22884 = 155.721 imp gal.

1 ft³ = 6.228835459 imp gal
Convert the other way: UK Gallons to Cubic Feet

Quick facts

How to convert cubic feet to UK gallons

  1. Take the value in cubic feet.
  2. Multiply it by 6.22884 (the number of UK gallons in one cubic foot).
  3. Round the result to the precision you need.
imp gal = ft³ × 6.22884

Worked example: 25 ft³ × 6.22884 = 155.721 imp gal.

To convert UK gallons back to cubic feet, multiply by 0.160544, or divide by 6.22884.

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

Cubic Feet to UK Gallons conversion table

Cubic Feet to UK Gallons conversion table
Cubic Feet [ft³]UK Gallons [imp gal]
0.01 ft³0.0622883546 imp gal
0.1 ft³0.6228835459 imp gal
1 ft³6.228835459 imp gal
2 ft³12.4576709181 imp gal
3 ft³18.6865063771 imp gal
5 ft³31.1441772952 imp gal
10 ft³62.2883545904 imp gal
20 ft³124.5767091809 imp gal
50 ft³311.4417729521 imp gal
100 ft³622.8835459043 imp gal
1000 ft³6228.8354590428 imp gal

ft³ to imp gal chart from 1 to 100

UK Gallons to Cubic Feet conversion table

UK Gallons to Cubic Feet conversion table
UK Gallons [imp gal]Cubic Feet [ft³]
0.01 imp gal0.0016054365 ft³
0.1 imp gal0.0160543653 ft³
1 imp gal0.1605436532 ft³
2 imp gal0.3210873065 ft³
3 imp gal0.4816309597 ft³
5 imp gal0.8027182662 ft³
10 imp gal1.6054365324 ft³
20 imp gal3.2108730647 ft³
50 imp gal8.0271826618 ft³
100 imp gal16.0543653236 ft³
1000 imp gal160.5436532359 ft³

Cubic Feet vs UK Gallons

Cubic FootUK Gallon
Symbolft³imp gal
Equals1 ft³ = 6.22884 imp gal1 imp gal = 0.160544 ft³

What is a cubic foot?

The volume of a cube with 1-foot sides. Used in the US for natural gas usage and shipping volume.

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.

Frequently asked questions

How many UK gallons are in a cubic foot?

There are 6.22884 UK gallons in 1 cubic foot (1 ft³ = 6.228835459 imp gal).

How many cubic feet are in a UK gallon?

There are 0.160544 cubic feet in 1 UK gallon (1 imp gal = 0.1605436532 ft³).

How do I convert cubic feet to UK gallons?

Multiply the number of cubic feet by 6.22884. For example, 10 ft³ × 6.22884 = 62.2884 imp gal. To convert back, multiply by 0.160544.

What is 10 ft³ in UK gallons?

10 ft³ = 62.2884 imp gal.

What is 100 ft³ in UK gallons?

100 ft³ = 622.884 imp gal.

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