Therms to Calories Converter

1 therm (thm) equals 25,210,420.6501 calories (cal).

Quick answer

  • 1 therm = 25,210,420.65 calories
  • 1 calorie = 3.9666137 × 10-8 therms
  • Formula: cal = thm × 25,210,420.6501

1 therm = 25,210,420.65 calories

How to convert therms to calories

cal = thm × 25,210,420.6501

To convert therms to calories, multiply the number of therms by 25,210,420.6501.

Example: 18 thm to cal

  1. Start with the value in therms: 18 thm.
  2. Multiply by 25,210,420.6501: 18 × 25,210,420.6501 = 453,787,571.7.
  3. Result: 18 therms = 453,787,571.7 calories.

Going the other way, 1 calorie = 3.9666137 × 10-8 therms, so to convert calories back to therms you divide by the same number. See calories to therms.

Therms to calories conversion table

Therms (thm)Calories (cal)
0.25 thm 6,302,605.163 cal
0.5 thm 12,605,210.33 cal
0.75 thm 18,907,815.49 cal
1 thm 25,210,420.65 cal
1.5 thm 37,815,630.98 cal
2 thm 50,420,841.3 cal
2.5 thm 63,026,051.63 cal
3 thm 75,631,261.95 cal
4 thm 100,841,682.6 cal
5 thm 126,052,103.3 cal
6 thm 151,262,523.9 cal
7 thm 176,472,944.6 cal
8 thm 201,683,365.2 cal
9 thm 226,893,785.9 cal
10 thm 252,104,206.5 cal
11 thm 277,314,627.2 cal
12 thm 302,525,047.8 cal
13 thm 327,735,468.5 cal
14 thm 352,945,889.1 cal
15 thm 378,156,309.8 cal
16 thm 403,366,730.4 cal
17 thm 428,577,151.1 cal
18 thm 453,787,571.7 cal
19 thm 478,997,992.4 cal
20 thm 504,208,413 cal
21 thm 529,418,833.7 cal
22 thm 554,629,254.3 cal
23 thm 579,839,675 cal
24 thm 605,050,095.6 cal
25 thm 630,260,516.3 cal
26 thm 655,470,936.9 cal
27 thm 680,681,357.6 cal
28 thm 705,891,778.2 cal
29 thm 731,102,198.9 cal
30 thm 756,312,619.5 cal
31 thm 781,523,040.2 cal
32 thm 806,733,460.8 cal
33 thm 831,943,881.5 cal
34 thm 857,154,302.1 cal
35 thm 882,364,722.8 cal

More thm to cal values

What is a therm?

The therm is 100,000 BTU, about 105.5 MJ or 29.3 kWh.

More about therms →

What is a calorie?

The calorie (small calorie) is the energy needed to raise the temperature of one gram of water by about one degree Celsius.

More about calories →

Frequently asked questions

How many calories are in a therm?

One therm is 25,210,420.65 calories.

How many therms are in a calorie?

One calorie is 3.9666137e-8 therms.

What is the formula to convert therms to calories?

cal = thm × 25,210,420.6501.