Volume
ac·fttogal (US)
Convert acre-feet (ac·ft) to US gallons (gal (US)).
Factor1 ac·ft = 325851.4 gal (US)
Converter
ac·ft
Accepts numbers or expressions, e.g. 150 + 14.7
Result
gal (US)
Rendered to 6 significant figures.
Formula
Formula
gal (US) = ac·ft × 325851.4
Multiply any value in acre-feet by 325851.4 to obtain the value in US gallons.
Worked example
Convert 1 ac·ft to gal (US).
- 01Start with 1 ac·ft.
- 02Multiply by the conversion factor: 1 × 325851.4 = 325851 gal (US).
Result1 ac·ft = 325851 gal (US)
Conversion table
| ac·ft | gal (US) |
|---|---|
| 1 | 3.2585e+5 |
| 2 | 6.5170e+5 |
| 5 | 1.6293e+6 |
| 10 | 3.2585e+6 |
| 20 | 6.5170e+6 |
| 50 | 1.6293e+7 |
| 100 | 3.2585e+7 |
| 200 | 6.517e+7 |
| 500 | 1.6293e+8 |
| 1000 | 3.2585e+8 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from ac·ft to gal (US)?
1 ac·ft equals 325851.4 gal (US). To convert, multiply the value in acre-feet by 325851.4.
How do I convert 1 ac·ft to gal (US)?
1 ac·ft = 325851 gal (US). For any value, multiply by 325851.4.
How do I convert gal (US) back to ac·ft?
Divide by the same factor — or equivalently, multiply by 3.068883e-6. So 1 gal (US) = 3.06888e-6 ac·ft.
When would I need to convert acre-foot to US 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).