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British Thermal Units to Megacalories Converter

Convert British thermal units (IT) (Btu) to megacalories (Mcal), 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
0.000252164400722 Mcal
joules (watt-seconds)
1,055.05585262 J
kilojoules
1.05505585262 kJ
megajoules
0.00105505585262 MJ
gigajoules
1.05505585262 × 10⁻⁶ GJ
calories (thermochemical)
252.164400722 cal
kilocalories (food Calories)
0.252164400722 kcal
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 = 0.000252164400722 Mcal

Show the working
  1. 1 Btu = 0.000252164400722 Mcal
  2. 1 × 0.000252164400722 = 0.000252164400722 Mcal

How to convert british thermal units to megacalories

1 Btu = 0.000252164400722 Mcal, so multiply by 0.000252164400722 to go from British thermal units (IT) to megacalories. Going the other way, 1 Mcal = 3,965.66683139 Btu.

Mcal = Btu × 0.000252164400722
Btu = Mcal × 3,965.66683139

Worked example:

1 Btu = 0.000252164400722 Mcal
5 × 0.000252164400722 = 0.00126082200361 Mcal

British Thermal Units to megacalories table

British Thermal UnitsMegacalories
1 Btu0.000252164400722 Mcal
2 Btu0.000504328801444 Mcal
3 Btu0.000756493202165 Mcal
4 Btu0.00100865760289 Mcal
5 Btu0.00126082200361 Mcal
6 Btu0.00151298640433 Mcal
7 Btu0.00176515080505 Mcal
8 Btu0.00201731520577 Mcal
9 Btu0.0022694796065 Mcal
10 Btu0.00252164400722 Mcal
15 Btu0.00378246601083 Mcal
20 Btu0.00504328801444 Mcal
25 Btu0.00630411001804 Mcal
30 Btu0.00756493202165 Mcal
40 Btu0.0100865760289 Mcal
50 Btu0.0126082200361 Mcal
75 Btu0.0189123300541 Mcal
100 Btu0.0252164400722 Mcal
250 Btu0.0630411001804 Mcal
500 Btu0.126082200361 Mcal
1000 Btu0.252164400722 Mcal

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.
Megacalories (Mcal)
Megacalories, a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed