18 Cubic Foot to Gallon (UK)
Quick answer
18 Cubic Foot (ft³) equals
112.119038 gal (UK)
To convert 18 Cubic feet to Gallon (UK)s, multiply by 6.228835459. Therefore, 18 Cubic Foot (ft³) equals 112.119038 Gallon (UK) (gal (UK)).
Formula: gal (UK) = ft³ × 6.228835459. Calculation: 18 × 6.228835459 = 112.119038 gal (UK).
Convert Cubic Foot (ft³) to Gallon (UK) (gal (UK)) online with our free unit converter. In volume, 1 ft³ = 6.228835 gal (UK). Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Cubic Foot to Gallon (UK)
- Step 1 — start with the formula. gal (UK) = ft³ × 6.228835459
- Step 2 — substitute your figure. 18 ft³ × 6.228835459
- Step 3 — read the result. 18 ft³ = 112.119038 gal (UK)
- Step 4 — check it in reverse. ft³ = gal (UK) × 0.1605436532 returns 18 ft³, which matches the figure you started with.
Volume Converter
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18 ft³ = 112.119038 gal (UK)
Formula:
gal (UK) = ft³ × 6.228835459With your value: 18 ft³ = 112.11903826 gal (UK)
How big is that?
Everyday references on a logarithmic scale, all expressed in cubic foot so you can sanity-check the result.
Other Cubic Foot to Gallon (UK) conversions
Cubic Foot to Gallon (UK) Conversion Table
| Cubic Foot (ft³) | Gallon (UK) (gal (UK)) |
|---|---|
| 0.5 | 3.114418 |
| 1 | 6.228835 |
| 2 | 12.457671 |
| 5 | 31.144177 |
| 10 | 62.288355 |
| 15 | 93.432532 |
| 20 | 124.576709 |
| 25 | 155.720886 |
| 50 | 311.441773 |
| 100 | 622.883546 |
| 250 | 1,557.208865 |
| 500 | 3,114.41773 |
| 1000 | 6,228.835459 |
Gallon (UK) to Cubic Foot Conversion Table
| Gallon (UK) (gal (UK)) | Cubic Foot (ft³) |
|---|---|
| 0.5 | 0.080272 |
| 1 | 0.160544 |
| 2 | 0.321087 |
| 5 | 0.802718 |
| 10 | 1.605437 |
| 15 | 2.408155 |
| 20 | 3.210873 |
| 25 | 4.013591 |
| 50 | 8.027183 |
| 100 | 16.054365 |
| 250 | 40.135913 |
| 500 | 80.271827 |
| 1000 | 160.543653 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Cubic Foot (ft³)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Gallon (UK) (gal (UK))
Volume
The imperial gallon is exactly 4.546 09 L (Weights and Measures Act 1985).
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Cubic Foot to Gallon (UK)
To convert from Cubic Foot (ft³) to Gallon (UK) (gal (UK)), multiply the value by 6.228835459.
Formula: gal (UK) = ft³ × 6.228835459
Reverse: ft³ = gal (UK) × 0.1605436532
Step-by-Step Example
- Start with your value in Cubic Foot. For example: 5 ft³
- Multiply by the conversion factor: 5 x 6.228835459
- The result is: 31.144177 gal (UK)
Cubic Foot and Gallon (UK) Relationship
Both Cubic Foot and Gallon (UK) belong to the US Customary / Imperial system, making this an intra-system conversion within volume. Since 1 Cubic Foot equals approximately 6.2288 Gallon (UK)s, the Cubic Foot represents a larger unit interval than the Gallon (UK). Understanding the relationship between Cubic Foot and Gallon (UK) is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Cubic Foot
The cubic foot equals about 28.3168 litres and is the standard unit for appliance capacity and gas metering in the US.
Common uses of Cubic Foot: refrigerator capacity, natural gas billing, shipping volume.
About Gallon (UK)
The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.
Common uses of Gallon (UK): UK fuel figures, brewing, older recipes.
Frequently Asked Questions
- What is 18 Cubic Foot in Gallon (UK)?
- 18 Cubic Foot equals 112.119038 Gallon (UK).
- How many Gallon (UK)s are in 1 Cubic Foot?
- There are exactly 6.228835459 Gallon (UK)s in 1 Cubic Foot. This means the conversion factor from Cubic Foot to Gallon (UK) is 6.228835459.
- What is the formula to convert Cubic Foot to Gallon (UK)?
- The formula to convert Cubic Foot to Gallon (UK) is: gal (UK) = ft³ × 6.228835459. For example, to convert 10 Cubic feet to Gallon (UK)s, you would multiply 10 by 6.228835459.
- What is a Cubic Foot?
- The cubic foot equals about 28.3168 litres and is the standard unit for appliance capacity and gas metering in the US.
- What is a Gallon (UK)?
- The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.
- What are the common uses of Cubic Foot?
- The Cubic Foot is commonly used in refrigerator capacity, natural gas billing, shipping volume.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). 18 Cubic Foot to Gallon (UK). UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/18-cubic_foot-to-gallon_uk