Marks Calc

therms to watt-hours

Convert therm to watt-hour — instant, free, with the formula shown.

1 thm=29307.106944 Wh

How to convert therm to watt-hour

To convert therm to watt-hour, multiply by 29307.10694444:

Wh = thm × 29307.10694444

For example, 10 thm × 29307.106944 = 293071.069444 Wh.

thm to Wh conversion table

therms (thm)watt-hours (Wh)
1 thm29307.106944 Wh
2 thm58614.213889 Wh
5 thm146535.534722 Wh
10 thm293071.069444 Wh
25 thm732677.673611 Wh
50 thm1465355.347222 Wh
100 thm2930710.694444 Wh
250 thm7326776.736111 Wh
500 thm14653553.472222 Wh
1000 thm29307106.944444 Wh
Reverse: Watt-hour to Therm

Other therm conversions

Convert to watt-hour from another unit

thm to Wh — frequently asked

How many watt-hours are in 1 therm?

1 therm = 29307.106944 watt-hours (thm × 29307.106944 = Wh).

What is the formula to convert therm to watt-hour?

Multiply your therm value by 29307.10694444 to get watt-hour.

How do I convert 10 therms to watt-hours?

10 thm = 293071.069444 Wh. For 100 thm the answer is 2930710.694444 Wh. Use the calculator on this page for any other value.

When to convert therm to watt-hour

1Electricity bills (kWh)
2Nutrition labels (kcal / food cal)
3HVAC and heating (BTU, therms)
4Physics and chemistry (J, eV)

Energy conversion — common questions

Is a food calorie the same as a calorie?

No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.

How many joules in 1 kWh?

1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.

What is a BTU?

British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.

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