Volume
bbltogal (US)
Convert oil barrels (42 US gal) (bbl) to US gallons (gal (US)).
Factor1 bbl = 42 gal (US)
Converter
bbl
Accepts numbers or expressions, e.g. 150 + 14.7
Result
gal (US)
Rendered to 6 significant figures.
Formula
Formula
gal (US) = bbl × 42
Multiply any value in oil barrels (42 US gal) by 42 to obtain the value in US gallons.
Worked example
Convert 10 bbl to gal (US).
- 01Start with 10 bbl.
- 02Multiply by the conversion factor: 10 × 42 = 420 gal (US).
Result10 bbl = 420 gal (US)
Conversion table
| bbl | gal (US) |
|---|---|
| 1 | 42 |
| 2 | 84 |
| 5 | 210 |
| 10 | 420 |
| 20 | 840 |
| 50 | 2100 |
| 100 | 4200 |
| 200 | 8400 |
| 500 | 21000 |
| 1000 | 42000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from bbl to gal (US)?
1 bbl equals 42 gal (US). To convert, multiply the value in oil barrels (42 US gal) by 42.
How do I convert 1 bbl to gal (US)?
1 bbl = 42 gal (US). For any value, multiply by 42.
How do I convert gal (US) back to bbl?
Divide by the same factor — or equivalently, multiply by 0.02380952. So 1 gal (US) = 0.0238095 bbl.
When would I need to convert oil barrel (42 US gal) 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?
Yes. Both bbl and gal (US) are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).