How to Convert Electronvolts to Therms (eV to thm)
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU. This guide shows how to convert electronvolts into therms by hand, with examples and a quick-reference table.
The conversion
To convert electronvolts to therms, multiply the value by 1.518570e-27. To go the other way, divide by the same number (or multiply by 6.585141e+26). Because the factor is tiny, scientific notation keeps the numbers manageable.
Therms = electronvolts × 1.518570e-27
Worked examples
- 3 eV = 4.555711e-27 thm
- 12.5 eV = 1.898213e-26 thm
- 75 eV = 1.138928e-25 thm
Electronvolts to Therms table
| Electronvolts | Therms |
|---|---|
| 1 eV | 1.518570e-27 thm |
| 2 eV | 3.037141e-27 thm |
| 5 eV | 7.592852e-27 thm |
| 10 eV | 1.518570e-26 thm |
| 20 eV | 3.037141e-26 thm |
| 25 eV | 3.796426e-26 thm |
| 50 eV | 7.592852e-26 thm |
| 100 eV | 1.518570e-25 thm |
| 250 eV | 3.796426e-25 thm |
| 500 eV | 7.592852e-25 thm |
| 1,000 eV | 1.518570e-24 thm |
Common questions
Is eV to thm exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Therms to Electronvolts converter.
Mistakes to avoid
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Background
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For any value, use the Electronvolts to Therms Converter or browse all energy converters.
Run your own numbers: Electronvolts to Therms Converter