$/MMBTU\text{\$/MMBTU}

per million BTU

Cost per energyexact by definition

Cost per million BTU is the wholesale energy pricing convention, the unit in which natural gas futures, industrial fuel contracts and cross-fuel comparisons are quoted. One million international table BTU is exactly 1,055,055,852.62 joules, so the conversion is exact by definition. One MMBTU equals exactly 10 therms and about 293.07 kilowatt-hours.

Watch out: The M in MMBTU is the Roman numeral for a thousand used twice, so MMBTU means a million BTU while MBTU in the same convention means a thousand. Elsewhere MBTU is written meaning a million, following the SI mega prefix, so the abbreviation is genuinely ambiguous and worth confirming. There are also several BTU definitions differing by up to about 0.2 percent; this site uses the international table BTU of exactly 1055.05585262 joules.

1 $/MMBTU\text{\$/MMBTU} 0.0034121416 $/kWh\text{\$/kWh}

One per million btu in every cost per energy unit

3.41214per megawatt-hour ($/MWh)
1per million BTU ($/MMBTU)this unit
1per dekatherm ($/dth)
0.947817per gigajoule ($/GJ)
0.1per therm ($/therm)
0.00341214per kilowatt-hour ($/kWh)
0.000947817per megajoule ($/MJ)
9.47817e-10per joule ($/J)
Solvers that use cost per energy