Specific Gravity Calculator

Your details

Pick a material to fill in a typical density, or leave on Custom to type your own.
The density of the material you are testing. A preset overrides this field.
Pure water is densest at 4 °C (1000 kg/m³). Use 20 °C (998.2 kg/m³) for lab convention. Above 100 °C is not modelled.
°C
Specific gravitySinks in water
2.7001
Density2,700kg/m³
Density2.7g/cm³
Density168.56lb/ft³
Density22.533lb/gal
API gravity (at 60 °F)-79.1°API
Water reference density999.97kg/m³
2.7001
Floats<1Neutral1-1.0001Sinks1.0001+

Specific gravity is 2.7001, the substance is denser than water, so it sinks.

  • Specific gravity is the ratio of a substance density to water density, so it carries no units.
  • Against your 999.97 kg/m³ water reference, the absolute density is 2,700 kg/m³ (168.56 lb/ft³).
  • For petroleum work the API gravity is -79.1 °API; above 10 °API a liquid floats on water, below 10 it sinks.

Next stepMultiply specific gravity by your water reference density to recover the absolute density, or switch the Solve for menu to go the other way.

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