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MMBtu to Mcf
1 MMBtu = 0.96432 Mcf, at the US average heating value of 1037 Btu per cubic foot. It moves with the heat content of your gas.
An MMBtu is an amount of energy, and it is how gas is priced. An Mcf is the volume of gas that carries it. Going from energy back to volume divides by the heat content of your gas, so a richer gas needs fewer Mcf to deliver the same MMBtu.
Factors last reviewed
Volume and energy
Volume to volume is fixed arithmetic. Volume to energy is not: it depends on how much heat your gas actually carries, so the heating value is a field you can edit.
BOE uses the SEC and industry convention of 6 Mcf to one barrel. That is an energy equivalence at the burner tip and says nothing about relative value at the wellhead, where the ratio is rarely 6:1.
The 1037 Btu/scf default is EIA's 2025 US average. EIA notes that heat content shifts with location, with the type of customer, and over time. If you have a gas analysis, type its number in instead.
- scf
- 964.32
- Mcf
- 0.96432
- MMcf
- 0.000964
- Bcf
- 9.6432e-7
- MMBtu
- 1
- therm
- 10
- GJ
- 1.0551
- BOE
- 0.16072
- Sm3
- 27.2539
- Nm3
- 25.8352
Methane and nitrous oxide to CO2e
Mass times global warming potential. The potential you use depends on what you are filing under, and the two US answers differ by 12 percent, so pick the one that applies to you.
Effective 1 January 2025. What the EPA Greenhouse Gas Reporting Program requires today.
One standard atmosphere. The scientific and API base.
The list holds the two values US rules actually require. IPCC AR6 gives 29.8 for fossil methane, 27.0 for non-fossil, and 273 for nitrous oxide (IPCC AR6 Working Group I, Table 7.15). Fossil is the one covering oil and gas leaks. Why it is not in this list.
- Gas mass
- 1
- tonnes
- CO2e
- 28
- tonnes CO2e
- CO2e
- 28,000
- kg CO2e
- Multiplier used
- 28
- GWP, 100-year
Volume inputs assume pure gas at 60 °F and the pressure base you picked, against a molar mass of 16.043 for methane. The base matters: Texas reports at 14.65 psia, so running RRC volumes through the 14.696 default overstates mass, and CO 2e with it, by about 0.31 percent. Real pipeline gas is also a mixture, so a measured mass will beat this for anything you have to defend.
Emission rate
A leak survey reports grams or kilograms an hour. A permit is written in tonnes a year. An engineer thinks in scfh. Same leak, three vocabularies.
Annualised at 8,760 hours, and volume rates cross to mass through the same standard-condition density the CO2e panel uses, so a leak quoted in scfh and the same leak in kg/hr cannot disagree.
- kg/hr
- 1
- g/hr
- 1,000
- kg/day
- 24
- t/yr
- 8.76
- scfh
- 52.148
- Mcf/d
- 1.2516
MMBtu to Mcf formula
Mcf = MMBtu x 1,000,000 / (Btu per cubic foot) / 1,000
The factor is the part worth checking. It is a field in the calculator above, and its source is named on the full converter.
MMBtu to Mcf chart
| MMBtu | Mcf |
|---|---|
| 0.1 | 0.096432 |
| 0.5 | 0.48216 |
| 1 | 0.96432 |
| 2 | 1.9286 |
| 5 | 4.8216 |
| 10 | 9.6432 |
| 25 | 24.108 |
| 50 | 48.216 |
| 100 | 96.432 |
| 250 | 241.08 |
| 500 | 482.16 |
| 1,000 | 964.32 |
| 2,500 | 2,411 |
| 5,000 | 4,822 |
| 10,000 | 9,643 |
Frequently asked questions
How many Mcf are in 1 MMBtu of natural gas?
0.96432 Mcf at the 1037 Btu per cubic foot US average, and 1.037 MMBtu coming back the other way. Both figures track the heat content of the specific gas, so a richer stream converts to more energy per unit volume and a diluted one to less.
How do I convert a gas price in $/MMBtu to $/Mcf?
Multiply the $/MMBtu price by the MMBtu in one Mcf of your gas, which is its heat content in Btu per cubic foot divided by 1,000. Henry Hub and most sales contracts quote $/MMBtu while production and royalty statements often show $/Mcf, so at the same $/MMBtu price a richer gas is worth more per Mcf. To go the other way, divide a $/Mcf price by the same factor.
Is an MMBtu the same as an Mcf?
No, although they are close enough to be confused. An MMBtu is a million Btu of energy and an Mcf is a thousand cubic feet of gas. Pipeline-quality gas carries a little over 1,000 Btu per cubic foot, so one Mcf holds slightly more than one MMBtu. The gap widens for wet gas rich in ethane and propane, and narrows or reverses for gas diluted with nitrogen or carbon dioxide.
Related
How to cite this page
Sources: U.S. EIA average heat content of natural gas, 1,037 Btu per cubic foot.
TetraSoft. (2026). MMBtu to Mcf calculator. Factors reviewed 2026-08-02. https://tetrasoftco.com/tools/mmbtu-to-mcf/