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How many barrels are in a ton of oil? It depends on the oil's density, measured as API gravity: about 7.32 barrels per metric tonne for an average crude, 7.6 for light WTI and around 8.5 for petrol. Choose the oil, the kind of ton and the direction to convert.
Barrels are a volume (42 US gallons, 158.987 litres) and tons are a weight, so this converter uses the density: specific gravity = 141.5 ÷ (API + 131.5).
| Amount | 1 |
| Convert | Tons → barrels |
| Ton | Metric tonne (1,000 kg) |
| Oil / product (API gravity) | Average crude oil — API 33 (7.32 bbl/t) |
| Barrels | 7.32 |
| Tons | 1 |
| Barrels per ton for this oil | 7.32 |
| Volume in litres | 1,163.69 |
| Density (kg/m³ at 60 °F) | 859.34 |
= 7.32 barrels.
Try this example →| Amount | 300000 |
| Convert | Tons → barrels |
| Ton | Metric tonne (1,000 kg) |
| Oil / product (API gravity) | Brent crude — API 38 |
| Barrels | 2,262,557.65 |
| Tons | 300,000 |
| Barrels per ton for this oil | 7.54 |
| Volume in litres | 359,717,920.03 |
| Density (kg/m³ at 60 °F) | 833.99 |
= 2,262,557.65 barrels.
Try this example →| Amount | 1000 |
| Convert | Barrels → tons |
| Ton | Metric tonne (1,000 kg) |
| Oil / product (API gravity) | Diesel / gasoil — API ~35 |
| Barrels | 1,000 |
| Tons | 134.98 |
| Barrels per ton for this oil | 7.41 |
| Volume in litres | 158,987.29 |
| Density (kg/m³ at 60 °F) | 849.01 |
= 134.98 tonnes.
Try this example →About 7.32 barrels for an average crude (API 33); light crudes like WTI give about 7.6 and heavy crudes about 6.9.
Barrels = tons × 1,000 ÷ (density in kg/m³ × 0.158987). For API 33 crude that is about 7.32 barrels per tonne.
About 2.2 million barrels of average crude (300,000 × 7.32) — roughly a large tanker load.
One oil barrel is 42 US gallons = 158.987 litres.