Volume
ac·fttogal (UK)
Convert acre-feet (ac·ft) to imperial gallons (gal (UK)).
Factor1 ac·ft = 271328.1 gal (UK)
Converter
ac·ft
Accepts numbers or expressions, e.g. 150 + 14.7
Result
gal (UK)
Rendered to 6 significant figures.
Formula
Formula
gal (UK) = ac·ft × 271328.1
Multiply any value in acre-feet by 271328.1 to obtain the value in imperial gallons.
Worked example
Convert 1 ac·ft to gal (UK).
- 01Start with 1 ac·ft.
- 02Multiply by the conversion factor: 1 × 271328.1 = 271328 gal (UK).
Result1 ac·ft = 271328 gal (UK)
Conversion table
| ac·ft | gal (UK) |
|---|---|
| 1 | 2.7133e+5 |
| 2 | 5.4266e+5 |
| 5 | 1.3566e+6 |
| 10 | 2.7133e+6 |
| 20 | 5.4266e+6 |
| 50 | 1.3566e+7 |
| 100 | 2.7133e+7 |
| 200 | 5.4266e+7 |
| 500 | 1.3566e+8 |
| 1000 | 2.7133e+8 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from ac·ft to gal (UK)?
1 ac·ft equals 271328.1 gal (UK). To convert, multiply the value in acre-feet by 271328.1.
How do I convert 1 ac·ft to gal (UK)?
1 ac·ft = 271328 gal (UK). For any value, multiply by 271328.1.
How do I convert gal (UK) back to ac·ft?
Divide by the same factor — or equivalently, multiply by 3.685575e-6. So 1 gal (UK) = 3.68558e-6 ac·ft.
When would I need to convert acre-foot to imperial gallon?
Volume conversions are used for tank sizing, batch calculations, and bridging between vendor specs (gallons, barrels, ft³) and process documentation (m³, litres).
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).