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Volume

bbltoac·ft

Convert oil barrels (42 US gal) (bbl) to acre-feet (ac·ft).

Factor1 bbl = 0.0001288931 ac·ft

Converter

bbl

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1.28893ac·ft

Rendered to 6 significant figures.

Formula

Formula
ac·ft = bbl × 0.0001288931

Multiply any value in oil barrels (42 US gal) by 0.0001288931 to obtain the value in acre-feet.

Worked example

Convert 10000 bbl to ac·ft.

  1. 01Start with 10000 bbl.
  2. 02Multiply by the conversion factor: 10000 × 0.0001288931 = 1.28893 ac·ft.
Result10000 bbl = 1.28893 ac·ft

Conversion table

bblac·ft
10.00012889
20.00025779
50.00064447
100.0012889
200.0025779
500.0064447
1000.012889
2000.025779
5000.064447
10000.12889

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from bbl to ac·ft?
1 bbl equals 0.0001288931 ac·ft. To convert, multiply the value in oil barrels (42 US gal) by 0.0001288931.
How do I convert 1 bbl to ac·ft?
1 bbl = 0.000128893 ac·ft. For any value, multiply by 0.0001288931.
How do I convert ac·ft back to bbl?
Divide by the same factor — or equivalently, multiply by 7758.367. So 1 ac·ft = 7758.37 bbl.
When would I need to convert oil barrel (42 US gal) to acre-foot?
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).

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