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.
Quick facts
- 1 ft³ = 6.22884 imp gal
- 1 imp gal = 0.160544 ft³
- Formula: imp gal = ft³ × 6.22884
- Quick estimate: multiply by about 6.2
How to convert cubic feet to UK gallons
- Start with your measurement in cubic feet.
- Multiply it by 6.22884 (the number of UK gallons in one cubic foot).
- Round the answer to a sensible number of decimal places.
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 [ft³] | UK Gallons [imp gal] |
|---|---|
| 0.01 ft³ | 0.0622883546 imp gal |
| 0.1 ft³ | 0.6228835459 imp gal |
| 1 ft³ | 6.228835459 imp gal |
| 2 ft³ | 12.4576709181 imp gal |
| 3 ft³ | 18.6865063771 imp gal |
| 5 ft³ | 31.1441772952 imp gal |
| 10 ft³ | 62.2883545904 imp gal |
| 20 ft³ | 124.5767091809 imp gal |
| 50 ft³ | 311.4417729521 imp gal |
| 100 ft³ | 622.8835459043 imp gal |
| 1000 ft³ | 6228.8354590428 imp gal |
ft³ to imp gal chart from 1 to 100
- 1 ft³ 6.22884 imp gal
- 2 ft³ 12.4577 imp gal
- 3 ft³ 18.6865 imp gal
- 4 ft³ 24.9153 imp gal
- 5 ft³ 31.1442 imp gal
- 6 ft³ 37.373 imp gal
- 7 ft³ 43.6018 imp gal
- 8 ft³ 49.8307 imp gal
- 9 ft³ 56.0595 imp gal
- 10 ft³ 62.2884 imp gal
- 11 ft³ 68.5172 imp gal
- 12 ft³ 74.746 imp gal
- 13 ft³ 80.9749 imp gal
- 14 ft³ 87.2037 imp gal
- 15 ft³ 93.4325 imp gal
- 16 ft³ 99.6614 imp gal
- 17 ft³ 105.89 imp gal
- 18 ft³ 112.119 imp gal
- 19 ft³ 118.348 imp gal
- 20 ft³ 124.577 imp gal
- 25 ft³ 155.721 imp gal
- 30 ft³ 186.865 imp gal
- 35 ft³ 218.009 imp gal
- 40 ft³ 249.153 imp gal
- 45 ft³ 280.298 imp gal
- 50 ft³ 311.442 imp gal
- 55 ft³ 342.586 imp gal
- 60 ft³ 373.73 imp gal
- 65 ft³ 404.874 imp gal
- 70 ft³ 436.018 imp gal
- 75 ft³ 467.163 imp gal
- 80 ft³ 498.307 imp gal
- 85 ft³ 529.451 imp gal
- 90 ft³ 560.595 imp gal
- 95 ft³ 591.739 imp gal
- 100 ft³ 622.884 imp gal
UK Gallons to Cubic Feet conversion table
| UK Gallons [imp gal] | Cubic Feet [ft³] |
|---|---|
| 0.01 imp gal | 0.0016054365 ft³ |
| 0.1 imp gal | 0.0160543653 ft³ |
| 1 imp gal | 0.1605436532 ft³ |
| 2 imp gal | 0.3210873065 ft³ |
| 3 imp gal | 0.4816309597 ft³ |
| 5 imp gal | 0.8027182662 ft³ |
| 10 imp gal | 1.6054365324 ft³ |
| 20 imp gal | 3.2108730647 ft³ |
| 50 imp gal | 8.0271826618 ft³ |
| 100 imp gal | 16.0543653236 ft³ |
| 1000 imp gal | 160.5436532359 ft³ |
Cubic Feet vs UK Gallons
| Cubic Foot | UK Gallon | |
|---|---|---|
| Symbol | ft³ | imp gal |
| Equals | 1 ft³ = 6.22884 imp gal | 1 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.
Where You Will Meet Cubic Feet and UK Gallons
Cubic feet are used mainly in the United States, while UK gallons are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes. This conversion bridges the US customary and metric systems, so it comes up whenever a figure crosses the US border with Canada or the Atlantic with the UK: product specifications, travel, recipes, school work and trade.
How big is 1 ft³ compared with 1 imp gal?
1 ft³ is 6.22884 times the size of 1 imp gal, so the number gets bigger when you convert cubic feet to UK gallons.
Cubic Feet to UK Gallons without a calculator
- In your head: multiply by 6 (about 3.7% off). 100 ft³ × 6 ≈ 600 imp gal.
- Closer estimate: multiply by 6.2 (within 0.46%).
- Fraction trick: multiply by 25, then divide by 4 (within 0.34%).
Real-world ft³ to imp gal examples
| Example | Cubic Feet | UK Gallons |
|---|---|---|
| A full-size refrigerator | 20 ft³ | 124.577 imp gal |
| One CCF of natural gas | 100 ft³ | 622.884 imp gal |
| One imperial gallon | 0.160544 ft³ | 1 imp gal |
| A small aquarium | 1.60544 ft³ | 10 imp gal |
| A garden water butt | 7.22446 ft³ | 45 imp gal |
How exact is the ft³ to imp gal factor?
The factor is exact by definition, so any error comes only from rounding. Keep at least 4 significant figures for school work, and the full factor for anything legal or commercial.
Mistakes to avoid
- This page uses the imperial (UK) measure. A US measure with the same name is smaller, so make sure your source is British or older Canadian.
- Volume factors are the cube of length factors, so a small rounding error in the length becomes three times larger in the volume.
Background on cubic feet and UK gallons
The imperial gallon was introduced in 1824 and is defined as exactly 4.54609 litres.
Keep converting
Next, you might want cubic feet to us gallons, uk gallons to liters, uk gallons to us gallons and liters to uk gallons. The full volume converter lists every unit.
On pakmath.com, the percentage calculator is a useful next step, as is the scientific calculator; Adzita offers a free fuel cost calculator.
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 by 6.22884, or divide by 0.160544 if that is easier. Example: 10 ft³ = 62.2884 imp gal.
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.
How accurate is this cubic foot to UK gallon converter?
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.
What is an easy way to convert cubic feet to UK gallons?
In your head: multiply by 6 (about 3.7% off). 100 ft³ × 6 ≈ 600 imp gal.
How many UK gallons is 100 ft³ (one CCF of natural gas)?
100 ft³ = 622.884 imp gal.
How many cubic feet is a garden water butt (45 imp gal)?
45 imp gal = 7.22446 ft³.
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