Natural gas unit conversion  MMBtu, m3, MWh, GJ
The volume of natural gas as a commodity is indicated by the unit of MMBtu, which is one million of the British thermal unit (Btu).
Btu  British thermal unit
Btu is how much heat is needed to heat up one pound of water (0.4536 l) by one degree Fahrenheit (0.5555 °C).
So very approximately we can say that one British thermal unit heats up half a liter of water by half a degree of Celsius.
Btu can be seen on commodity exchanges, where the price of gas is indicated by $/BTU.
Calculator of conversion of units of energy (for natural gas)
The calculator converts standard units of energy with an accuracy of two decimal points:
 Megawatt hour (MWh)

Gigajoules (GJ)

Meter cubed (m^{3})  for natural gas
 One million Btu (MMBtu)
Conversions are therefore possible from for example Megawatt hours to meters cubed, gigajoules to Megawatt hours.
Table of energy unit conversion
In the table you can see how the individual conversions work
1 MMBtu

1 MWH

1 GJ

1 m^{3 }

0.293 MWh

3.412 MMBtu

0.9478 MMBtu

0.036 MMBtu

1.055 GJ

3.6 GJ

0.278 MWh

0.011 MWh

27.766 m^{3
}

94.741 m3

26.317 m3

0.038 GJ

Where is Btu and MMBtu used?
Btu is mainly used in regards to energy and industry, specifically as a measure of energy production or the performance of an AC unit.
From the definition given above it is clear that alone the unit of Btu is very small and for heating up water lots of this unit is needed. Because of this it is more common to see MMBtu used, which is a million times the standard unit Btu. To better imagine this, 1 MMBtu is equivalent to about 28 m3 of compressed natural gas.
How long would one household last with 1 MMBtu of natural gas?
An average four person household would consumer 1 MMBtu of natural gas in around 23 days.
News on natural gas
Kitchen Unit Conversion Q&A.
How many milliliters are in a regular cup?
One cup is equivalent to 250 milliliters (ml).
How many milliliters are in a regular table spoon?
One table spoon is equivalent to 15 milliliters (ml).
Natural gas unit conversion questions and answers
What is 1 Btu?
1 Btu is how much heat is needed to heat up one pound of water (0.4536 l) by one degree Fahrenheit (0.5555 °C).
What is Btu used for?
Btu is mainly used in regards to energy and industry, specifically as a measure of energy production or the performance of an AC unit.