API MPMS Chapter 11.5

API Manual of Petroleum Measurement Standards Chapter 11.5 (Parts 1 to 3), Densite/Weight/Volume Intraconversion, First Edition

These intraconversion tables are applicable to all crude oils, petroleum products, and petrochemicals. These standards are intended for application to bulk liquid quantities.

Ordering information

This item is only available on CD-ROM.

Part 1–Conversions of API Gravity at 60°F

Provides implementation procedures for conversion of API gravity at 60°F to equivalent densities in both in vacuo and in air values. This standard gives the following equivalents for any value of API gravity at 60°F:

  • relative density at 60°F (old Table 3);
  • absolute density at 60°F;
  • absolute density at 15°C (old Table 3);
  • pounds per U.S. gallon at 60°F in vacuo and in air (old Table 8);
  • U.S. gallons per pound at 60°F in vacuo and in air (old Table 8);
  • short tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 9);
  • U.S. gallons per short ton at 60°F in vacuo and in air (old Table 10);
  • short tons per barrel at 60°F in vacuo and in air (old Table 9);
  • barrels per short ton at 60°F in vacuo and in air (old Table 10);
  • long tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 11);
  • U.S. gallons per long ton at 60°F in vacuo and in air (old Table 12);
  • long tons per barrel at 60°F in vacuo and in air (old Table 11);
  • barrels per long ton at 60°F in vacuo and in air (old Table 12);
  • metric tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 13);
  • metric tons per barrel at 60°F in vacuo and in air (old Table 13);
  • barrels per metric ton at 60°F in vacuo and in air;
  • cubic meters per short ton at 15°C in vacuo and in air (old Table 14);
  • cubic meters per long ton at 15°C in vacuo and in air (old Table 14).

While not related to API gravity, the following are included for user convenience:

  • U.S. gallons at 60°F to litres at 15°C (old Table 4);
  • barrels at 60°F to litres at 15°C (old Table 4);

Part 2–Conversions for Relative Density (60/60°F)

Provides implementation procedures for conversion of relative density (60/ 60°F) to equivalent densities in both in vacuo and in air values. This standard gives the following equivalents for any value of relative density (60/60°F):

  • API gravity at 60°F (old Table 21);
  • absolute density at 60°F;
  • absolute density at 15°F (old Table 21);
  • pounds per U.S. gallon at 60°F in and in air (old Table 26);
  • U.S. gallons per pound at 60°F in vacuo and in air (old Table 26);
  • short tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 27);
  • U.S. gallons per short ton at 60°F in vacuo and in air (old Table 28);
  • short tons per barrel at 60°F in vacuo and in air (old Table 27);
  • barrels per short ton at 60°F in vacuo and in air (old Table 28);
  • long tons per 1000 U.S. gallons at 60°F in vacuo and in air (old Table 29);
  • U.S. gallons per long ton at 60°F in vacuo and in air (old Table 30);
  • long tons per barrel at 60°F in vacuo and in air (old Table 29);
  • barrels per long ton at 60°F in vacuo and in air (old Table 30);
  • metric tons per 1000 U.S. gallons at 60°F in vacuo and in air;
  • metric tons per barrel at 60°F in vacuo and in air;
  • barrels per metric ton at 60°F in vacuo and in air;
  • cubic meters per short ton at 15°C in vacuo and in air (old Table 31);
  • cubic meters per long ton at 15°C in vacuo and in air (old Table 31).

While not related to relative density, the following are included for user convenience:

  • U.S. gallons at 60°F to litres at 15°C (old Table 22);
  • barrels at 60°F to litres at 15°C (old Table 22, Table 52).

Part 3–Conversions for Absolute Density at 15°C

Provides implementation procedures for conversion of absolute density at 15°C to equivalent densities in both in vacuo and in air values. This standard gives the following equivalents for any value of absolute density at 15°C:

  • relative density at 15°C;
  • absolute density at 60°F;
  • relative density at 60°F (old Table 51);
  • API gravity at 60°F (old Table 51); – density at 15°C (similar to old Table 56);
  • conversion of apparent density at 15°C to absolute density at 15°C;
  • cubic meters per metric ton at 15°C in vacuo and in air (similar to old Table 56);
  • cubic meters per short ton at 15°C in vacuo and in air;
  • cubic meters per long ton at 15°C in vacuo and in air;
  • pounds per U.S. gallon at 60°F in vacuo and in air;
  • U.S. gallons per pound at 60°F in vacuo and in air;
  • short tons per 1000 litres (cubic meters) at 15°C in vacuo and in air (old Table 57);
  • short tons per 1000 U.S. gallons at 60°F in vacuo and in air;
  • U.S. gallons per short ton at 60°F in vacuo and in air;
  • short tons per barrel at 60°F in vacuo and in air;
  • barrels per short ton at 60°F in vacuo and in air;
  • long tons per 1000 litres (cubic meters) at 15°C in vacuo and in air (old Table 57);
  • U.S. gallons per metric ton at 60°F in vacuo and in air (old Table 58);
  • barrels per metric ton at 60°F in vacuo and in air (old Table 58);
  • long tons per 1000 U.S. gallons at 60°F in vacuo and in air;
  • U.S. gallons per long ton at 60°F in vacuo and in air;
  • long tons per barrel at 60°F in vacuo and in air;
  • barrels per long ton at 60°F in vacuo and in air.

While not related to relative density, the following are included for user convenience:

  • litres at 15°C to U.S. gallons at 60°F;
  • cubic meters at 15°C to barrels at 60°F (old Table 52).

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