To convert calories to electronvolts, multiply by 26114473970000000000.
The calculation uses 1 cal = 26114473970000000000 eV. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
Uses the thermochemical calorie, 4.184 J.
The formula
cal- Input unit: calories
eV- Output unit: electronvolts
How to use this calculator
- Enter a value in cal.
- Multiply by the stored conversion factor.
- Read the result in eV; divide by the same factor to convert back.
Worked examples
Worked conversion
1 cal × 26114473970000000000 ≈ 26114473970000000000 eV.
Reverse conversion
26114473970000000000 eV ÷ 26114473970000000000 ≈ 1 cal. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 26114473970000000000 eV per cal. Uses the thermochemical calorie, 4.184 J.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
cal to eV table
| cal | eV (rounded) |
|---|---|
| 0 | 0 |
| 1 | 26114473970000000000 |
| 2 | 52228947940000000000 |
| 5 | 130572369800000000000 |
| 10 | 261144739700000000000 |
| 100 | 2.611447397e+21 |