Electronvolts to International-table BTU converter
Convert electronvolts (eV) to International-table BTU (BTU IT). Calculate a value, check the formula and compare common measurements.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Value | Enter value using the definition in the method and example. |
| From | Select the unit or currency in which the entered number is currently expressed. |
| To | Select the unit or currency you need for the answer. |
Understanding your result
The converted value describes the same energy quantity in the selected target unit. Display rounding does not add precision to the original measurement.
Common mistakes
- Confusing the source and target units, or overlooking a prefix or case-sensitive symbol.
Check your calculation
- Convert to the target unit and then reverse the direction. Within display rounding, you should recover the original value.
Read the energy measurement guide · Calculation checks, sources and review limits
How do I convert electronvolts to international-table BTU?
Enter the value in electronvolts to find the same energy quantity in international-table BTU. The number changes to match the unit; the underlying quantity stays the same. Check the definitions below when a unit has more than one convention.
Common uses
- Compare energy amounts stated in different units.
- Translate energy measurements on a specification or meter.
How it works
For the displayed direction, 1 eV equals 1.51857044347e-22 BTU IT. The engine converts through the shared energy base quantity. Calories are thermochemical. BTU uses the international-table definition. Foot-pounds mean foot-pounds force. The multiplier is derived from the two centralized unit factors. Keep full precision until the final result; displayed answers use up to 12 significant digits.
Worked example
10 eV converts to 1.51857044347e-21 BTU IT. For the reverse direction, swap the units and enter 1.51857044347e-21 BTU IT; the result is approximately 10 eV.
FAQ
How do I convert eV to BTU IT?
BTU IT = eV × 1.51857044347e-22
Which definition is used?
Calories are thermochemical. BTU uses the international-table definition. Foot-pounds mean foot-pounds force.
Common values
Use “Swap units” above for the reverse conversion. Values below are rounded to six significant digits.
| electronvolts | International-table BTU |
|---|---|
| 1 | 1.51857e-22 |
| 5 | 7.59285e-22 |
| 10 | 1.51857e-21 |
| 20 | 3.03714e-21 |
| 30 | 4.55571e-21 |
| 50 | 7.59285e-21 |
| 100 | 1.51857e-20 |