Therms to Calories: 1 therm equals 25216539 cal. To convert therms to calories, multiply by 25216539 (cal = therm × 25,216,539). For example, 10 therm = 252165390 cal.
How to Convert Therms to Calories
To convert from therms to calories, multiply the value by 25216539. The conversion is linear, meaning doubling the input doubles the output.
Conversion Formula
- Therms to Calories:
cal = therm × 25,216,539 - Calories to Therms:
therm = cal ÷ 25,216,539
Therms to Calories Conversion Chart
| Therms (therm) | Calories (cal) |
|---|---|
| 0.1 | 2521653.9 |
| 0.25 | 6304134.75 |
| 0.5 | 12608269.5 |
| 1 | 25216539 |
| 2 | 50433078 |
| 3 | 75649617 |
| 5 | 126082695 |
| 10 | 252165390 |
| 20 | 504330780 |
| 25 | 630413475 |
| 50 | 1.26083e+9 |
| 100 | 2.52165e+9 |
| 250 | 6.30413e+9 |
| 1000 | 2.52165e+10 |
Understanding the Units
What is a Therm?
A therm equals exactly 100,000 BTU, or about 105.5 megajoules — the standard unit for retail natural gas in the US and UK.
Common contexts: natural gas billing.
What is a Calorie?
The thermochemical calorie equals exactly 4.184 joules; the historical "small" calorie raised one gram of water by one degree Celsius.
Common contexts: chemistry, historical thermodynamics.