Convert kilowatt-hours to therms

1 kWh=0.03412thm

Use the converter below to change any kilowatt-hours value into therms instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.034121

Conversion formula

Forward

therms = kilowatt-hours × 0.03412

Reverse

kilowatt-hours = therms × 29.3071

Example: 10 kWh × 0.03412 = 0.3412 thm.

About both units

From

Kilowatt-Hour

kWh

The kilowatt-hour equals 3.6 megajoules — energy delivered by 1 kW for 1 hour. It is the standard unit on electricity bills worldwide. A UK home uses about 2900 kWh/year; an EV charge adds 10–80 kWh depending on battery.

Real-world: UK home: ~2900 kWh/year. Tesla Model 3 battery: 60–80 kWh. Typical EV efficiency: 15–20 kWh/100 km.

Read full kilowatt-hour reference →

Therm

thm

The therm equals 100,000 BTU or 105.5 megajoules. Used in US and UK natural-gas billing. A typical UK home uses 200–500 therms per year for heating.

Real-world: UK home heating: 200–500 therms/year. 1 therm = about $1.50 US (2024) or £1.00 UK.

Read full therm reference →

Kilowatt-Hour to Therm conversion table

Common kilowatt-hours to therms values for quick reference.

Kilowatt-Hour (kWh)	Therm (thm)
1 kWh	0.03412 thm
10 kWh	0.3412 thm
100 kWh	3.41214 thm
500 kWh	17.0607 thm
1,000 kWh	34.1214 thm
5,000 kWh	170.607 thm
10,000 kWh	341.214 thm
50,000 kWh	1,706.07 thm
100,000 kWh	3,412.14 thm
500,000 kWh	17,060.71 thm

Tips & common mistakes

Quick tips

1 kWh = 3.6 MJ = 3,600,000 J.
Multiply device power (kW) × time (h) = energy (kWh).
EV "range anxiety" translates to knowing kWh available.

Avoid these

Confusing kWh (energy) with kW (power).
Calculating electric costs by power ignoring duration.
Using "kWh/h" — redundant; it's just kW.

Frequently asked questions

How many therms in a kilowatt-hour?

One kilowatt-hour equals 0.03412 therms.

How do I convert kilowatt-hours to therms?

Multiply the kilowatt-hour value by 0.03412 to get the equivalent in therms.

What is 100 kilowatt-hours in therms?

100 kilowatt-hours equals 3.41214 therms.

Is a kilowatt-hour bigger than a therm?

No. 1 kilowatt-hour equals 0.03412 therms, so one kilowatt-hour is smaller.

How to convert kilowatt-hours to therms without a calculator?

Multiply by 0.03 for a quick estimate; use a calculator for precise results.

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