# Therm Conversion Calculator

Enter a value in therms below to convert to another unit of energy.

## What Is a Therm?

A therm is a unit used to measure energy.

The therm is a US customary unit of energy.

## How Much Is a Therm?

One therm is a measure of heat energy equal to 100,000 BTU, which are equal to the amount of heat energy required to increase the temperature of one pound of water one degree Fahrenheit. Therms are often used by natural gas companies to measure the heat equivalent of gas used.

## How to Convert Therms

To convert therms to another unit of energy, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.[1]

You can find the conversion factors for therms in the conversion table below.

Then, multiply the energy measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

therms × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

## Therm Conversion Table

Common therm values and equivalent imperial and metric energy measurements
therms joules kilojoules megajoules gigajoules calories kilocalories megacalories watt-hours kilowatt-hours megawatt-hours watt-seconds british thermal units million BTU quads electronvolts kiloelectronvolts megaelectronvolts
1 105,505,585 J 105,506 kJ 105.505585 MJ 0.105506 GJ 25,216,440 cal 25,216 kcal 25.21644 Mcal 29,307 Wh 29.307107 kWh 0.029307 MWh 105,505,585 Ws 100,000 BTU 0.1 MMBTU 0.0000000001 658,510,000,000,000,028,642,902,016 eV 658,509,999,999,999,992,135,680 keV 658,510,000,000,000,065,536 MeV
2 211,011,171 J 211,011 kJ 211.011171 MJ 0.211011 GJ 50,432,880 cal 50,433 kcal 50.43288 Mcal 58,614 Wh 58.614214 kWh 0.058614 MWh 211,011,171 Ws 200,000 BTU 0.2 MMBTU 0.0000000002 1,317,000,000,000,000,011,727,273,984 eV 1,317,000,000,000,000,048,234,496 keV 1,317,000,000,000,000,000,000 MeV
3 316,516,756 J 316,517 kJ 316.516756 MJ 0.316517 GJ 75,649,320 cal 75,649 kcal 75.64932 Mcal 87,921 Wh 87.921321 kWh 0.087921 MWh 316,516,756 Ws 300,000 BTU 0.3 MMBTU 0.0000000003 1,975,500,000,000,000,017,590,910,976 eV 1,975,499,999,999,999,938,134,016 keV 1,975,500,000,000,000,131,072 MeV
4 422,022,341 J 422,022 kJ 422.022341 MJ 0.422022 GJ 100,865,760 cal 100,866 kcal 100.86576 Mcal 117,228 Wh 117.228428 kWh 0.117228 MWh 422,022,341 Ws 400,000 BTU 0.4 MMBTU 0.0000000004 2,634,100,000,000,000,251,247,198,208 eV 2,634,100,000,000,000,045,088,768 keV 2,634,099,999,999,999,868,928 MeV
5 527,527,926 J 527,528 kJ 527.527926 MJ 0.527528 GJ 126,082,200 cal 126,082 kcal 126.0822 Mcal 146,536 Wh 146.535535 kWh 0.146536 MWh 527,527,926 Ws 500,000 BTU 0.5 MMBTU 0.0000000005 3,292,599,999,999,999,982,232,928,256 eV 3,292,599,999,999,999,934,988,288 keV 3,292,600,000,000,000,262,144 MeV
6 633,033,512 J 633,034 kJ 633.033512 MJ 0.633034 GJ 151,298,640 cal 151,299 kcal 151.29864 Mcal 175,843 Wh 175.842642 kWh 0.175843 MWh 633,033,512 Ws 600,000 BTU 0.6 MMBTU 0.0000000006 3,951,100,000,000,000,262,974,472,192 eV 3,951,099,999,999,999,824,887,808 keV 3,951,100,000,000,000,131,072 MeV
7 738,539,097 J 738,539 kJ 738.539097 MJ 0.738539 GJ 176,515,081 cal 176,515 kcal 176.515081 Mcal 205,150 Wh 205.149749 kWh 0.20515 MWh 738,539,097 Ws 700,000 BTU 0.7 MMBTU 0.0000000007 4,609,599,999,999,999,993,960,202,240 eV 4,609,600,000,000,000,251,658,240 keV 4,609,600,000,000,000,000,000 MeV
8 844,044,682 J 844,045 kJ 844.044682 MJ 0.844045 GJ 201,731,521 cal 201,732 kcal 201.731521 Mcal 234,457 Wh 234.456856 kWh 0.234457 MWh 844,044,682 Ws 800,000 BTU 0.8 MMBTU 0.0000000008 5,268,099,999,999,999,724,945,932,288 eV 5,268,099,999,999,999,604,686,848 keV 5,268,100,000,000,000,393,216 MeV
9 949,550,267 J 949,550 kJ 949.550267 MJ 0.94955 GJ 226,947,961 cal 226,948 kcal 226.947961 Mcal 263,764 Wh 263.763963 kWh 0.263764 MWh 949,550,267 Ws 900,000 BTU 0.9 MMBTU 0.0000000009 5,926,599,999,999,999,455,931,662,336 eV 5,926,600,000,000,000,031,457,280 keV 5,926,599,999,999,999,737,856 MeV
10 1,055,055,853 J 1,055,056 kJ 1,055 MJ 1.055056 GJ 252,164,401 cal 252,164 kcal 252.164401 Mcal 293,071 Wh 293.07107 kWh 0.293071 MWh 1,055,055,853 Ws 1,000,000 BTU 1 MMBTU 0.000000001 6,585,100,000,000,000,286,429,020,160 eV 6,585,100,000,000,000,458,227,712 keV 6,585,100,000,000,000,131,072 MeV
11 1,160,561,438 J 1,160,561 kJ 1,161 MJ 1.160561 GJ 277,380,841 cal 277,381 kcal 277.380841 Mcal 322,378 Wh 322.378177 kWh 0.322378 MWh 1,160,561,438 Ws 1,100,000 BTU 1.1 MMBTU 0.0000000011 7,243,699,999,999,999,695,451,586,560 eV 7,243,700,000,000,000,296,747,008 keV 7,243,699,999,999,999,868,928 MeV
12 1,266,067,023 J 1,266,067 kJ 1,266 MJ 1.266067 GJ 302,597,281 cal 302,597 kcal 302.597281 Mcal 351,685 Wh 351.685284 kWh 0.351685 MWh 1,266,067,023 Ws 1,200,000 BTU 1.2 MMBTU 0.0000000012 7,902,200,000,000,000,525,948,944,384 eV 7,902,199,999,999,999,649,775,616 keV 7,902,200,000,000,000,262,144 MeV
13 1,371,572,608 J 1,371,573 kJ 1,372 MJ 1.371573 GJ 327,813,721 cal 327,814 kcal 327.813721 Mcal 380,992 Wh 380.992391 kWh 0.380992 MWh 1,371,572,608 Ws 1,300,000 BTU 1.3 MMBTU 0.0000000013 8,560,700,000,000,000,256,934,674,432 eV 8,560,700,000,000,000,076,546,048 keV 8,560,699,999,999,999,606,784 MeV
14 1,477,078,194 J 1,477,078 kJ 1,477 MJ 1.477078 GJ 353,030,161 cal 353,030 kcal 353.030161 Mcal 410,299 Wh 410.299498 kWh 0.410299 MWh 1,477,078,194 Ws 1,400,000 BTU 1.4 MMBTU 0.0000000014 9,219,199,999,999,999,987,920,404,480 eV 9,219,200,000,000,000,503,316,480 keV 9,219,200,000,000,000,000,000 MeV
15 1,582,583,779 J 1,582,584 kJ 1,583 MJ 1.582584 GJ 378,246,601 cal 378,247 kcal 378.246601 Mcal 439,607 Wh 439.606605 kWh 0.439607 MWh 1,582,583,779 Ws 1,500,000 BTU 1.5 MMBTU 0.0000000015 9,877,699,999,999,999,718,906,134,528 eV 9,877,699,999,999,999,856,345,088 keV 9,877,700,000,000,000,393,216 MeV
16 1,688,089,364 J 1,688,089 kJ 1,688 MJ 1.688089 GJ 403,463,041 cal 403,463 kcal 403.463041 Mcal 468,914 Wh 468.913712 kWh 0.468914 MWh 1,688,089,364 Ws 1,600,000 BTU 1.6 MMBTU 0.0000000016 10,536,000,000,000,000,093,818,191,872 eV 10,536,000,000,000,000,385,875,968 keV 10,536,000,000,000,000,000,000 MeV
17 1,793,594,949 J 1,793,595 kJ 1,794 MJ 1.793595 GJ 428,679,481 cal 428,679 kcal 428.679481 Mcal 498,221 Wh 498.220819 kWh 0.498221 MWh 1,793,594,949 Ws 1,700,000 BTU 1.7 MMBTU 0.0000000017 11,195,000,000,000,000,414,011,359,232 eV 11,195,000,000,000,000,018,874,368 keV 11,194,999,999,999,999,213,568 MeV
18 1,899,100,535 J 1,899,101 kJ 1,899 MJ 1.899101 GJ 453,895,921 cal 453,896 kcal 453.895921 Mcal 527,528 Wh 527.527926 kWh 0.527528 MWh 1,899,100,535 Ws 1,800,000 BTU 1.8 MMBTU 0.0000000018 11,852,999,999,999,999,555,789,651,968 eV 11,852,999,999,999,999,091,933,184 keV 11,853,000,000,000,000,786,432 MeV
19 2,004,606,120 J 2,004,606 kJ 2,005 MJ 2.004606 GJ 479,112,361 cal 479,112 kcal 479.112361 Mcal 556,835 Wh 556.835033 kWh 0.556835 MWh 2,004,606,120 Ws 1,900,000 BTU 1.9 MMBTU 0.0000000019 12,511,999,999,999,999,875,982,819,328 eV 12,512,000,000,000,000,872,415,232 keV 12,512,000,000,000,000,000,000 MeV
20 2,110,111,705 J 2,110,112 kJ 2,110 MJ 2.110112 GJ 504,328,801 cal 504,329 kcal 504.328801 Mcal 586,142 Wh 586.14214 kWh 0.586142 MWh 2,110,111,705 Ws 2,000,000 BTU 2 MMBTU 0.000000002 13,169,999,999,999,999,017,761,112,064 eV 13,169,999,999,999,999,945,474,048 keV 13,169,999,999,999,999,475,712 MeV

## Therm Conversion Calculators

You can also convert energy using one of our therm converters below.

Joules
Calories
Watts x Time
Thermal Units
Electronvolts

You might also find our other electrical calculators useful.

## References

1. National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion

Joules
Calories
Watts x Time
Thermal Units
Electronvolts