Direct conversion
Convert therm (US) [therm] to calorie [cal] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 therm (US) [therm] = 25210420.650096 calorie [cal]
1 therm (US) [therm] = 25210420.650096 calorie [cal]
Example: 1 therm (US) [therm] equals 25210420.650096 calorie [cal].
Energy conversions use joule as the reference unit, including electrical, thermal, nutrition, and mechanical energy units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The therm (US) (therm) is a energy unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse therm (US) when comparing energy values, checking specifications, converting between systems, or preparing quick estimates.
The calorie is an energy unit traditionally based on heating water by one degree Celsius.
HistoryCalories were used in heat measurement before joules became the SI standard.
Current useCalories are used in nutrition, food labels, exercise estimates, and diet planning.
| therm (US) [therm] | calorie [cal] |
|---|---|
| 1 | 25210420.650096 |
| 2 | 50420841.300191 |
| 5 | 126052103.250478 |
| 10 | 252104206.500956 |
| 20 | 504208413.001912 |
| 25 | 630260516.25239 |
| 50 | 1260521032.50478 |
| 100 | 2521042065.00956 |
| 1000 | 25210420650.0956 |
Use this formula: 1 therm (US) [therm] = 25210420.650096 calorie [cal] Enter your value in the calculator and the result updates instantly.
1 therm (US) [therm] equals 25210420.650096 calorie [cal].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.