Capacity & units
reference.
Convert volume units and estimate mass using a density you supply.
Convert your capacity
Keep units consistent
One cubic metre equals 1,000 litres. This tool uses the petroleum barrel of 42 US gallons, approximately 158.987294928 litres.
Mass needs a density
Tonnes cannot be converted to cubic metres using one universal factor. Supply the relevant product density in kg/m³ and ensure density and volume refer to compatible measurement conditions. This is a planning estimate, not a custody-transfer calculation.
Frequently asked questions
Answers to help you prepare your next step.
How many litres are in a petroleum barrel?
This tool uses the 42 US gallon petroleum barrel, approximately 158.987 litres. It is not a generic barrel size for every commodity.
Can tonnes be converted to cubic metres without density?
No. A mass-to-volume estimate needs a product density and compatible measurement conditions. The tool asks for density in kg/m³.
Is this tool suitable for custody-transfer measurement?
It is a planning calculator. Confirm the appropriate measurement, temperature and contractual conventions for the actual transaction.
Questions are editorially selected; references provide industry context alongside this service’s scope.