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Calories to Kiloelectronvolts Converter

Convert calories to kiloelectronvolts (keV) for energy unit conversion in physics.

What this tool does

Convert calories to kiloelectronvolts (keV) for energy unit conversion in physics. Type an amount in calories (thermochemical), choose the units, and the tool converts it to kiloelectronvolts. It offers 5 energy units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Calorie (thermochemical), Joule, Electronvolt, Kiloelectronvolt, Megaelectronvolt. Starts as Calorie (thermochemical).
  • To: Choose one of the same 5 units as "From". Starts as Kiloelectronvolt.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from calories (thermochemical) to kiloelectronvolts:

  • 1 cal (th) ≈ 2.61144739675 × 10¹⁶ keV
  • 5 cal (th) ≈ 1.30572369838 × 10¹⁷ keV
  • 10 cal (th) ≈ 2.61144739675 × 10¹⁷ keV
  • 50 cal (th) ≈ 1.30572369838 × 10¹⁸ keV
  • 100 cal (th) ≈ 2.61144739675 × 10¹⁸ keV

Multiply the number of calories (thermochemical) by about 2.61144739675 × 10¹⁶ to get kiloelectronvolts. The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.

Sources: Calorie (thermochemical): NIST SP 811 (2008), Appendix B.8. Kiloelectronvolt: SI Brochure, 9th edition (2019).

Limitations

  • Converts units of energy only. It does not work out energy from power, time, voltage or charge.

FAQs

Q: How many kiloelectronvolts are in one calorie (thermochemical)?
A: One calorie (thermochemical) is about 2.6114474 × 10¹⁶ kiloelectronvolts. Change the value to convert any amount; the other units are listed below the result.
Q: Which definition of the units does this page use?
A: Calories here are thermochemical calories (1 cal = 4.184 J exactly), the definition commonly used in chemistry and nutrition. The International Table calorie (4.1868 J) is slightly larger.
Q: Can I convert from kiloelectronvolts to calories (thermochemical)?
A: Yes. Choose kiloelectronvolt in the From box and calorie (thermochemical) in the To box. One kiloelectronvolt is about 3.8292941 × 10⁻¹⁷ calories (thermochemical).

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