Watt-Hours (Wh) to Therms (US) Converter
Enter a value to instantly convert between energy units.
1 Watt-Hour = 0 Therm (US)
Key Formulas
Kilocalorie → Kilojoule
kJ = kcal × 4.184Kilojoule → Kilocalorie
kcal = kJ × 0.239006Kilowatt-Hour → Joule
J = kWh × 3600000Joule → Kilowatt-Hour
kWh = J × 2.77778e-7Formula
therm = Wh ÷ 29300One US therm equals approximately 29.3 kilowatt-hours (since 1 therm = 105.48 MJ and 1 kWh = 3.6 MJ). This conversion is used in US natural gas billing when comparing gas energy to electrical energy consumption.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A utility engineer verifying that 29,300 Wh equals 1 therm for the billing system.
29300 Wh = 1 thm
A homeowner calculating 100 kWh of electricity equivalent in therms — 3.41 therms.
100000 Wh = 3.414 thm
A factory calculating 5000 Wh of gas energy per hour reports 0.171 therms/h for the audit.
5000 Wh = 0.171 thm
An energy auditor converting 1 kWh of heat energy to therms gets 0.0341 therms.
1000 Wh = 0.0341 thm