1 oil barrel to US gallons
1 bbl = 42 gal. Change the amount below, or read the formula and the reference table further down.
1 oil barrel equals
US gallons
1 bbl = 42 gal
The formula
Oil barrels and US gallons both measure volume from the same zero, so a single multiplier does the job.
gal = bbl × 42
Going the other way? Convert US gallons to oil barrels.
Oil barrels to US gallons table
Values either side of 1 bbl.
| Oil barrels (bbl) | US gallons (gal) |
|---|---|
| -4 | -168 |
| -3.5 | -147 |
| -3 | -126 |
| -2.5 | -105 |
| -2 | -84 |
| -1.5 | -63 |
| -1 | -42 |
| -0.5 | -21 |
| 0 | 0 |
| 0.5 | 21 |
| 1 | 42 |
| 1.5 | 63 |
| 2 | 84 |
| 2.5 | 105 |
| 3 | 126 |
| 3.5 | 147 |
| 4 | 168 |
| 4.5 | 189 |
| 5 | 210 |
| 5.5 | 231 |
| 6 | 252 |
Questions people ask
- How many US gallons are in a oil barrel?
- One oil barrel equals 42 US gallons.
- How do I convert oil barrels to US gallons by hand?
- Multiply the number of oil barrels by 42. For a rough check, 42 is close enough for most everyday use.
- What is 1 oil barrel in US gallons?
- 1 oil barrel is 42 US gallons.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.