Watt Hour to Therm Converter
Energy · unit-converter
Convert Watt Hour to Therm with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: Watt Hour (wh)
To: Therm (therm)
About Watt Hour
One watt-hour is 3,600 J—the energy from 1 W for one hour. Common for small batteries and device ratings.
About Therm
A therm is a large US customary energy unit for natural gas (≈ 105.5 MJ here).
How to convert watt hours to therm
1 watt hour is equal to 0.00003412141633 therm when both are expressed in joule-equivalents:
1 wh = (3,600 J ÷ 105,505,585.262 J) therm = 0.00003412141633 therm
Each watt hour is defined as 3,600 J and each therm as 105,505,585.262 J in this tool, so one wh equals 3,600 ÷ 105,505,585.262 therm = 0.00003412141633 therm.
Let d(wh) be the numeric amount in Watt Hour (wh), and d(therm) the amount in Therm (therm). Then:
d(therm) = d(wh) × (3,600 / 105,505,585.262)
Equivalently, divide by how many wh fit into one therm (joules per therm divided by joules per wh):
d(therm) = d(wh) ÷ 29307.10701722222075
Or: therm = watt hour ÷ 29307.10701722222075
Examples
Example #1: Convert 1 wh to therm
1 wh = 1 wh × (3,600/105,505,585.262) therm = 0.0000341214 therm
1 wh = 1 wh ÷ 29307.10701722222075 = 0.0000341214 therm
Example #2: Convert 10 wh to therm
10 wh = 10 wh × (3,600/105,505,585.262) therm = 0.0003412142 therm
10 wh = 10 wh ÷ 29307.10701722222075 = 0.0003412142 therm
Summary
To convert Watt Hour to Therm, multiply the value in wh by the ratio of joules per wh divided by joules per therm. Equivalently: value_therm = value_wh × (3600 / 105505585.262). Numerically, 1 wh equals 0.00003412141633127942 therm.
Relationship context
You are converting between electrical energy (watt-hours) (Watt Hours) and US / imperial engineering units (BTU, therm, ft·lb) (Therm). All values are mapped through joules first. The numeric factor is 3.412142e-5.
Conversion tables
| Watt Hour (wh) | Therm (therm) |
|---|---|
| 0.1 | 0.0000034121 |
| 1 | 0.0000341214 |
| 2 | 0.0000682428 |
| 3 | 0.0001023642 |
| 4 | 0.0001364857 |
| 5 | 0.0001706071 |
| 6 | 0.0002047285 |
| 7 | 0.0002388499 |
| 8 | 0.0002729713 |
| 9 | 0.0003070927 |
| Watt Hour (wh) | Therm (therm) |
|---|---|
| 10 | 0.0003412142 |
| 20 | 0.0006824283 |
| 30 | 0.0010236425 |
| 40 | 0.0013648567 |
| 50 | 0.0017060708 |
| 60 | 0.002047285 |
| 70 | 0.0023884991 |
| 80 | 0.0027297133 |
| 90 | 0.0030709275 |
| 100 | 0.0034121416 |