Electron Volt to Hartree Converter

Energy Converter

27 units available

Decimals:

From

To

0.036749

1 eV = 0.036749 Eh

Formula:

Eh = eV × 0.0367493222

With your value: 1 eV = 0.03674932 Eh

How big is that?

Everyday references on a logarithmic scale, all expressed in electron volt so you can sanity-check the result.

Your value1.00 eV

Heartbeat (6.2e+18× your value)6.24e+18 eV

AA battery charge (6.2e+22× your value)6.24e+22 eV

Slice of bread (1.7e+24× your value)1.75e+24 eV

Daily food intake (5.2e+25× your value)5.24e+25 eV

Litre of petrol (2.1e+26× your value)2.13e+26 eV

Other Electron Volt to Hartree conversions

2 eV to Eh 3 eV to Eh 4 eV to Eh 5 eV to Eh 6 eV to Eh 7 eV to Eh 8 eV to Eh

Electron Volt to Hartree Conversion Table

Electron Volt (eV)	Hartree (Eh)
0.5	0.018375
1	0.036749
2	0.073499
5	0.183747
10	0.367493
15	0.55124
20	0.734986
25	0.918733
50	1.837466
100	3.674932
250	9.187331
500	18.374661
1000	36.749322

Hartree to Electron Volt Conversion Table

Hartree (Eh)	Electron Volt (eV)
0.5	13.605693
1	27.211386
2	54.422772
5	136.056931
10	272.113862
15	408.170794
20	544.227725
25	680.284656
50	1,360.569312
100	2,721.138625
250	6,802.846561
500	13,605.693123
1000	27,211.386246

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Electron Volt (eV)

Energy

Exact conversion

1 eV = 1.602 176 634 × 10⁻¹⁹ J exactly, since the elementary charge is now fixed.

Source: CODATA Internationally Recommended Values of the Fundamental Physical Constants (2022 adjustment)

CODATA / NIST · Reviewed 2026-07-01

Hartree (Eh)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Electron Volt to Hartree

To convert from Electron Volt (eV) to Hartree (Eh), multiply the value by 0.0367493222.

Formula: Eh = eV × 0.0367493222

Reverse: eV = Eh × 27.211386246

Step-by-Step Example

Start with your value in Electron Volt. For example: 5 eV
Multiply by the conversion factor: 5 x 0.0367493222
The result is: 0.183747 Eh

About Electron Volt

The electron volt (eV) is a unit of energy and work. One electron volt equals 1.602177 × 10^-19 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Hartree

The hartree (Eh) is a unit of energy and work. One hartree equals 4.359745 × 10^-18 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Hartree are in 1 Electron Volt?

There are exactly 0.0367493222 Hartree in 1 Electron Volt. This means the conversion factor from Electron Volt to Hartree is 0.0367493222.

What is the formula to convert Electron Volt to Hartree?

The formula to convert Electron Volt to Hartree is: Eh = eV × 0.0367493222. For example, to convert 10 Electron Volt to Hartree, you would multiply 10 by 0.0367493222.

What is a Electron Volt?