th

What is a Therm?

Therm is a unit used in energy and power conversions and practical measurement work.

Therm is a unit used in energy and power conversions and practical measurement work.

The therm is 100,000 BTU. Gas utilities in the United States and the UK have long used it to bill natural gas.

Measurement system: SI, practical energy and power-measurement usage. SI equivalent: 1 th = 1.055056e+8 J.

Therm facts

Unit name
Therm
Symbol
th
Category
Energy and Power
Measurement system
SI, practical energy and power-measurement usage
SI equivalent
1 th = 1.055056e+8 J
Common uses
Heating, electricity, nutrition, fuel and engineering

Definition of the therm

Therm is a unit used in energy and power conversions and practical measurement work.

Measurement system and SI relationship

SI, practical energy and power-measurement usage

SI equivalent: 1 th = 1.055056e+8 J

History of the therm

The therm is 100,000 BTU. Gas utilities in the United States and the UK have long used it to bill natural gas.

Where is the therm used?

Heating, electricity, nutrition, fuel and engineering

Therm conversion tools

Sources

  1. BIPM: The International System of Units (SI Brochure)
  2. NIST: NIST Guide to the SI — Appendix B.8: Factors for Units Listed Alphabetically
  3. NIST: Guide to the SI — Conversion Factors

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