Convert Tuns to Oil Barrels
Convert Tuns (tun) to Oil Barrels (bbl) instantly and accurately.
Conversion Formula
bbl = tun × 6
About Tuns
A tun = 4 hogsheads = 252 US gallons ≈ 953.9 L - the largest traditional wine cask and origin of the English word 'ton': a full tun of wine weighed ~1 long ton. English shipping law rated cargo capacity in 'tuns burden'. Scottish distilleries use 'tun rooms' for large vatting/blending vats. 1 tun = 252 US gal = 2 pipes = 4 hogsheads ≈ 953.9 L.
About Oil Barrels
An oil barrel (bbl) = exactly 42 US gallons ≈ 158.99 L - established by the Pennsylvania oil industry in the 1860s and now the global petroleum standard. Global oil production, OPEC quotas, and crude spot prices are all quoted in barrels or Mb/d (millions of barrels per day); world consumption ~100 Mb/d in 2024. 'Bbl' derives from the 'blue barrel' mark on petroleum containers. 1 bbl = 42 US gal ≈ 159 L.
Quick Reference Table
| Tuns (tun) | Oil Barrels (bbl) |
|---|---|
| 1 tun | 6 bbl |
| 2 tun | 12 bbl |
| 5 tun | 30 bbl |
| 10 tun | 60 bbl |
| 25 tun | 150 bbl |
| 50 tun | 300 bbl |
| 100 tun | 600 bbl |