⚡ Energy
therms to BTU Converter
Convert therms to BTU instantly with a reference conversion table.
Quick answer: To convert therms to BTU, multiply by 100000. For example, 1 therms = 100000 BTU. Use the calculator below for any value.
therms to BTU
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Common conversions
| therms | BTU |
|---|
Formula:
How to convert therms to BTU
1
Enter your value
Type the number of therms you want to convert into the left box. The result in btu appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — BTU to therms. Your current value carries across so you don't have to re-enter anything.
3
About therms and BTU
therms and BTU are common energy measurements.
📊 Common conversions at a glance
| therms | BTU |
|---|---|
| 1e-05 | 1 |
| 0.001 | 100 |
| 0.01 | 1000 |
| 0.1 | 1e+04 |
| 0.5 | 5e+04 |
| 1 | 1e+05 |
Reviewed for 2026. therms ↔ BTU conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.
Frequently asked questions
How do I convert therms to BTU?
To convert therms to BTU, multiply by 100000. Or use the calculator above for instant results.
How many BTU are in 1 therms?
1 therms equals 100000 BTU.
Is the therms to BTU converter free?
Yes, the therms to BTU converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.