Convert watt-hours to electronvolts

1 Wh=2.2469e22eV

Use the converter below to change any watt-hours value into electronvolts instantly — with formula, conversion table, and real-world examples.

You have

Equals

2.2469e22

Conversion formula

Forward

electronvolts = watt-hours × 2.2469e22

Reverse

watt-hours = electronvolts × 4.4505e-23

Example: 10 Wh × 2.2469e22 = 2.2469e23 eV.

About both units

From

Watt-Hour

The watt-hour equals 3600 joules — 1 W delivered for 1 hour. Used for phone, laptop and small-battery capacities. A typical smartphone battery is 10–20 Wh; a laptop is 50–100 Wh.

Real-world: iPhone battery: 12 Wh. MacBook Pro: 70 Wh. Power bank: 20 Wh–100 Wh. Airplane carry-on limit: usually 100 Wh.

Read full watt-hour reference →

Electronvolt

The electronvolt equals 1.602 × 10⁻¹⁹ joules — the energy gained by an electron accelerated through 1 volt. It is the natural energy unit of atomic, nuclear and particle physics. Chemical bonds are a few eV; LHC protons reach 7 TeV = 7 × 10¹² eV.

Real-world: Silicon band gap: 1.12 eV. Hydrogen ionization: 13.6 eV. LHC proton: 7 TeV. Photon wavelength 500 nm = 2.5 eV.

Read full electronvolt reference →

Watt-Hour to Electronvolt conversion table

Common watt-hours to electronvolts values for quick reference.

Watt-Hour (Wh)	Electronvolt (eV)
1 Wh	2.2469e22 eV
10 Wh	2.2469e23 eV
100 Wh	2.2469e24 eV
500 Wh	1.1235e25 eV
1,000 Wh	2.2469e25 eV
5,000 Wh	1.1235e26 eV
10,000 Wh	2.2469e26 eV
50,000 Wh	1.1235e27 eV
100,000 Wh	2.2469e27 eV
500,000 Wh	1.1235e28 eV

Tips & common mistakes

Quick tips

1 Wh = 3600 J = 0.001 kWh.
Battery mAh × V = Wh. A 3000 mAh phone battery at 3.7 V = 11.1 Wh.
Airline limits lithium batteries to 100 Wh for carry-on.

Avoid these

Confusing mAh with Wh — need voltage to convert.
Using Wh when kWh is more appropriate for large batteries.
Forgetting the voltage in battery capacity calculations.

Frequently asked questions

How many electronvolts in a watt-hour?

One watt-hour equals 2.2469e22 electronvolts.

How do I convert watt-hours to electronvolts?

Multiply the watt-hour value by 2.2469e22 to get the equivalent in electronvolts.

What is 100 watt-hours in electronvolts?

100 watt-hours equals 2.2469e24 electronvolts.

Is a watt-hour bigger than a electronvolt?

Yes. 1 watt-hour equals 2.2469e22 electronvolts, so one watt-hour is larger.

How to convert watt-hours to electronvolts without a calculator?

Multiply by 2.2469e22 for a quick estimate; use a calculator for precise results.

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