1 therm (US) [therm] = 99976.128977 British thermal unit [BTU]
Example: 1 therm (US) [therm] equals 99976.128977 British thermal unit [BTU].
Examples
1 therm (US) [therm] = 99976.128977 British thermal unit [BTU]
2 therm (US) [therm] = 199952.257955 British thermal unit [BTU]
5 therm (US) [therm] = 499880.644887 British thermal unit [BTU]
10 therm (US) [therm] = 999761.289775 British thermal unit [BTU]
20 therm (US) [therm] = 1999522.57955 British thermal unit [BTU]
25 therm (US) [therm] = 2499403.224437 British thermal unit [BTU]
Practical Uses for therm us to btu it
quick homework checksshopping and product comparisonstravel planningprofessional estimatesDIY and household measurementsgeneral reference
Sources and Accuracy
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.
About These Units
therm (US) [therm]
Definition
The therm (US) (therm) is a energy unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use therm (US) when comparing energy values, checking specifications, converting between systems, or preparing quick estimates.
British thermal unit [BTU]
Definition
The British thermal unit (BTU) is a energy unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use British thermal unit when comparing energy values, checking specifications, converting between systems, or preparing quick estimates.
Advertisement728 × 90
How to Convert
Enter the value in the “From value” field.
Confirm the source unit is therm (US) [therm].
Confirm the target unit is British thermal unit [BTU].