Degrees API to kilograms per cubic meter
Type a value in °API to get it in kg/m³ instantly.
That's 1.02× as heavy as Brent crude, while medium crude is 1.04× denser. That is light crude: high yields of gasoline and diesel.
Convert the other way: kg/m³ to °API
What it means
How heavy is that oil?
API gravity is defined at 60 °F. Oil expands with heat, so a field measurement must be corrected to that temperature before the number means anything.
The math
How to convert °API to kg/m³
The API scale is built around water at 10: °API = 141.5 ÷ SG − 131.5, and back again SG = 141.5 ÷ (°API + 131.5). Because SG is on the bottom, the scale runs backwards.
Example: 35 °API = 849.014 kg/m³.
Every unit
Your gravity in every unit
Tables
°API to kg/m³ conversion table
| °API | kg/m³ |
|---|---|
| 5 °API | 1,035.61 kg/m³ |
| 10 °API | 999.016 kg/m³ |
| 15 °API | 964.92 kg/m³ |
| 20 °API | 933.074 kg/m³ |
| 25 °API | 903.264 kg/m³ |
| 30 °API | 875.299 kg/m³ |
| 35 °API | 849.014 kg/m³ |
| 40 °API | 824.261 kg/m³ |
| 45 °API | 800.911 kg/m³ |
| 50 °API | 778.847 kg/m³ |
| 60 °API | 738.176 kg/m³ |
kg/m³ to °API conversion table
| kg/m³ | °API |
|---|---|
| 5 kg/m³ | 28,140.7 °API |
| 10 kg/m³ | 14,004.6 °API |
| 15 kg/m³ | 9,292.55 °API |
| 20 kg/m³ | 6,936.54 °API |
| 25 kg/m³ | 5,522.93 °API |
| 30 kg/m³ | 4,580.53 °API |
| 35 kg/m³ | 3,907.38 °API |
| 40 kg/m³ | 3,402.52 °API |
| 45 kg/m³ | 3,009.85 °API |
| 50 kg/m³ | 2,695.72 °API |
| 60 kg/m³ | 2,224.51 °API |
Quick answers
Quick answers
- How many kg/m³ is 1 °API?
- 1 °API is 1,066.87 kg/m³.
- How many kg/m³ is 10 °API?
- 10 °API is 999.016 kg/m³.
- How many kg/m³ is 35 °API?
- 35 °API is 849.014 kg/m³.
The units
About these units
Degrees API (°API)
The petroleum industry standard. Water is 10; higher means lighter.
Kilograms per cubic meter (kg/m³)
The SI density, as refineries and shipping documents use it.
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