About

Precision is key whether you are filling a dry-sump racing engine or managing inventory for a commercial kitchen. Oils vary significantly in density based on their composition (mineral, synthetic, or vegetable). 10 kg of Castor Oil does not occupy the same volume as 10 kg of Gasoline.

This tool features a toggle between Industrial and Culinary modes to provide the correct specific gravity for your application. The calculation logic relies on V = m ÷ ρ at standard temperature (15°C).

Formulas

The basic relationship between Mass, Density, and Volume applies.

V = MassDensity

Note: Density decreases as temperature rises. This tool assumes standard ambient temperature (15−20°C).

Reference Data

Oil Type	Category	Density (kg/L)
SAE 10W-30 Motor Oil	Automotive	0.870
SAE 50 Gear Oil	Automotive	0.900
Automatic Trans Fluid (ATF)	Automotive	0.840
Hydraulic Fluid (ISO 46)	Industrial	0.875
Castor Oil	Industrial/Add	0.961
Olive Oil (Extra Virgin)	Culinary	0.915
Sunflower Oil	Culinary	0.920
Coconut Oil (Liquid)	Culinary	0.924
Ghee (Clarified Butter)	Culinary	0.900

Frequently Asked Questions

Generally, yes, they are very close. However, synthetic oils often have a slightly more consistent density across temperature ranges compared to mineral oils.

Yes. Waste oil is typically a mix of fluids, so using an average density of 0.88-0.90 kg/L is a safe estimate for converting collected weight to tank volume.

Yes. Almost all oils float on water because their density is less than 1.0 kg/L (usually between 0.84 and 0.96 kg/L).