API / ASTM D287
API API
Density converter for petroleum products. Enter any of the four values to get the others instantly. Reference temperature: 15.6 °C (60 °F).
Density converter
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Formulas: SG = 141.5 / (°API + 131.5) · kg/L ≈ SG × 0.99904 · lb/gal = SG × 8.3454. Reference ASTM D287 at 15.6 °C (60 °F).
Reference values
Typical densities of petroleum products at 15.6 °C
| Product | °API | SG | kg/L | lb/gal |
|---|---|---|---|---|
| Water | 10 | 1.000 | 0.999 | 8.345 |
| Gasoline | ~60 | ~0.739 | ~0.738 | ~6.169 |
| Diesel | ~34 | ~0.850 | ~0.849 | ~7.094 |
| Mineral oil ISO VG 46 | ~28 | ~0.875 | ~0.874 | ~7.302 |
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