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Electronvolts to watt-hours

1 electronvolt in watt-hours
1 eV = 4.45 × 10^-23 Wh
Wh = eV × 4.45049065 × 10^-23

To convert electronvolts to watt-hours, multiply by 4.45049065 × 10^-23. The table below gives the values people look up most often, and the converter works for any number.

Electronvolts to watt-hours table

Common electronvolt values converted to watt-hours.
Electronvolts Watt-hours
1 eV 4.45 × 10^-23
2 eV 8.901 × 10^-23
3 eV 1.335 × 10^-22
4 eV 1.78 × 10^-22
5 eV 2.225 × 10^-22
10 eV 4.45 × 10^-22
15 eV 6.676 × 10^-22
20 eV 8.901 × 10^-22
25 eV 1.113 × 10^-21
30 eV 1.335 × 10^-21
40 eV 1.78 × 10^-21
50 eV 2.225 × 10^-21
75 eV 3.338 × 10^-21
100 eV 4.45 × 10^-21
250 eV 1.113 × 10^-20
500 eV 2.225 × 10^-20
1,000 eV 4.45 × 10^-20

How the conversion works

The relationship is Wh = eV × 4.45049065 × 10^-23. Both units measure energy, so the conversion is a fixed factor that never changes.

Common questions

How many watt-hours are in one electronvolt?
One electronvolt equals 4.45 × 10^-23 watt-hours. Wh = eV × 4.45049065 × 10^-23.
How do you convert electronvolts to watt-hours?
Use Wh = eV × 4.45049065 × 10^-23. So 10 eV is 4.45 × 10^-22 Wh.
How many electronvolts are in one watt-hour?
One watt-hour equals 2.2469433 × 10^22 electronvolts, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked