Unit Conversions & Measures
BTU to Therms Converter
Convert BTU to therms with the exact factor, the working shown step by step and a plain-English explanation.
Your inputs
Change any value to update the result instantly.
Therms
0.010002388 thm
Conversion factor
1 BTU = 0.0000100024 thm
Value in joule (internal base unit)
1,055,055.9 J
Reverse conversion check
0.010002388 thm = 1,000 BTU
Rounded for everyday use
0.01 thm
What this calculator does
Converts a measurement given in British thermal unit (IT)s into therm (US)s using the defined conversion factor.
What your result means
The same quantity expressed in thm instead of BTU. Nothing about the measurement itself changes.
Formula and working
thm = BTU × 0.0000100024
- 1
Start with your value
1,000 BTU
- 2
Convert to joule
1,000 × 1,055.0558526 = 1,055,055.9 J
- 3
Convert into therms
1,055,055.9 ÷ 105,480,400 = 0.010002388 thm
- 4
Result
1,000 BTU = 0.010002388 thm
Frequently asked questions
Symbols and assumptions
- BTU
- Input unit — British thermal unit (IT)
- thm
- Output unit — therm (US)
- J
- Base unit used internally for energy, work and heat
- • Both units measure energy, work and heat, so the physical quantity is unchanged by the conversion.
- • The relationship is exactly linear: 1 BTU = 0.0000100024 thm.
- • Values are converted through the SI base unit for this quantity rather than pair by pair.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • A unit conversion changes how a number is expressed, not how it was measured — the answer can never be more accurate than the value entered.
- • Displayed figures are rounded for readability; the full stored precision of the thm value is used in every onward calculation.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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