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British Thermal Units to Megajoules Converter

Convert British thermal units (IT) (Btu) to megajoules (MJ), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
0.00105505585262 MJ
joules (watt-seconds)
1,055.05585262 J
kilojoules
1.05505585262 kJ
gigajoules
1.05505585262 × 10⁻⁶ GJ
calories (thermochemical)
252.164400722 cal
kilocalories (food Calories)
0.252164400722 kcal
megacalories
0.000252164400722 Mcal
watt-hours
0.293071070172 Wh
kilowatt-hours
0.000293071070172 kWh
megawatt-hours
2.93071070172 × 10⁻⁷ MWh
million Btu
1 × 10⁻⁶ MMBtu
therms (100,000 Btu)
1 × 10⁻⁵ thm
quads (10¹⁵ Btu)
1 × 10⁻¹⁵ quad
electronvolts
6.58514067819 × 10²¹ eV
kiloelectronvolts
6.58514067819 × 10¹⁸ keV
megaelectronvolts
6.58514067819 × 10¹⁵ MeV

1 Btu = 0.00105505585262 MJ

Show the working
  1. 1 Btu = 0.00105505585262 MJ
  2. 1 × 0.00105505585262 = 0.00105505585262 MJ

How to convert british thermal units to megajoules

1 Btu = 0.00105505585262 MJ, so multiply by 0.00105505585262 to go from British thermal units (IT) to megajoules. Going the other way, 1 MJ = 947.817120313 Btu.

MJ = Btu × 0.00105505585262
Btu = MJ × 947.817120313

Worked example:

1 Btu = 0.00105505585262 MJ
5 × 0.00105505585262 = 0.0052752792631 MJ

British Thermal Units to megajoules table

British Thermal UnitsMegajoules
1 Btu0.00105505585262 MJ
2 Btu0.00211011170524 MJ
3 Btu0.00316516755786 MJ
4 Btu0.00422022341048 MJ
5 Btu0.0052752792631 MJ
6 Btu0.00633033511572 MJ
7 Btu0.00738539096834 MJ
8 Btu0.00844044682096 MJ
9 Btu0.00949550267358 MJ
10 Btu0.0105505585262 MJ
15 Btu0.0158258377893 MJ
20 Btu0.0211011170524 MJ
25 Btu0.0263763963155 MJ
30 Btu0.0316516755786 MJ
40 Btu0.0422022341048 MJ
50 Btu0.052752792631 MJ
75 Btu0.0791291889465 MJ
100 Btu0.105505585262 MJ
250 Btu0.263763963155 MJ
500 Btu0.52752792631 MJ
1000 Btu1.05505585262 MJ

About the units

British Thermal Units (Btu)
British thermal units (IT), a US customary unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed