Megajoule per cubic meter (MJ/m³)

Exactly one million J/m³, the same as one kilojoule per liter. Natural gas is about 38 MJ/m³.

What is a megajoule per cubic meter?

Symbol: MJ/m³
Quantity: Fuel Energy per Volume
Unit system: SI
Definition: Exactly one million J/m³, the same as one kilojoule per liter. Natural gas is about 38 MJ/m³.
Exact: Yes, the value is exact by definition
Source: SI Brochure, 9th edition (BIPM, 2019)

The usual unit for heating values of natural gas, biogas and other fuel gases outside the United States.

Megajoule per cubic meter in other units
Megajoule per cubic meter	Kilowatt-hour per cubic meter	BTU per cubic foot	Joule per cubic meter
1 MJ/m³	≈ 0.2777777778 kWh/m³	≈ 26.83919199 BTU/ft³	= 1000000 J/m³
10 MJ/m³	≈ 2.777777778 kWh/m³	≈ 268.3919199 BTU/ft³	= 10000000 J/m³
100 MJ/m³	≈ 27.77777778 kWh/m³	≈ 2683.919199 BTU/ft³	= 100000000 J/m³
1000 MJ/m³	≈ 277.7777778 kWh/m³	≈ 26839.19199 BTU/ft³	= 1000000000 J/m³

The next smaller fuel energy per volume unit is the BTU per gallon (US) (BTU/gal). 1 MJ/m³ ≈ 3.587878096 BTU/gal, and 1 BTU/gal ≈ 0.2787162699 MJ/m³.

The next larger fuel energy per volume unit is the kilowatt-hour per cubic meter (kWh/m³). 1 MJ/m³ ≈ 0.2777777778 kWh/m³, and 1 kWh/m³ = 3.6 MJ/m³.

How many kilowatt-hours per cubic meter are in one megajoule per cubic meter?: One megajoule per cubic meter ≈ 0.2777777778 kWh/m³ (kilowatt-hours per cubic meter).
How many BTUs per cubic foot are in one megajoule per cubic meter?: One megajoule per cubic meter ≈ 26.83919199 BTU/ft³ (BTUs per cubic foot).
How many joules per cubic meter are in one megajoule per cubic meter?: One megajoule per cubic meter = 1000000 J/m³ (joules per cubic meter).