Hartree to Megaelectron Volt Converter

Energy Converter

27 units available

Decimals:

From

To

2.721139e-5

1 Eh = 2.721139e-5 MeV

Formula:

MeV = Eh × 0.0000272114

With your value: 1 Eh = 2.721139e-5 MeV

How big is that?

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

Your value1.00 Eh

Heartbeat (2.3e+17× your value)2.29e+17 Eh

AA battery charge (2.3e+21× your value)2.29e+21 Eh

Slice of bread (6.4e+22× your value)6.42e+22 Eh

Daily food intake (1.9e+24× your value)1.93e+24 Eh

Litre of petrol (7.8e+24× your value)7.84e+24 Eh

Other Hartree to Megaelectron Volt conversions

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

Hartree to Megaelectron Volt Conversion Table

Hartree (Eh)	Megaelectron Volt (MeV)
0.5	1.360569e-5
1	2.721139e-5
2	5.442277e-5
5	0.000136
10	0.000272
15	0.000408
20	0.000544
25	0.00068
50	0.001361
100	0.002721
250	0.006803
500	0.013606
1000	0.027211

Megaelectron Volt to Hartree Conversion Table

Megaelectron Volt (MeV)	Hartree (Eh)
0.5	18,374.661088
1	36,749.322176
2	73,498.644351
5	183,746.610878
10	367,493.221757
15	551,239.832635
20	734,986.443513
25	918,733.054391
50	1,837,466.108783
100	3,674,932.217565
250	9,187,330.543914
500	18,374,661.087827
1000	36,749,322.175655

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.

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

Megaelectron Volt (MeV)

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 Hartree to Megaelectron Volt

To convert from Hartree (Eh) to Megaelectron Volt (MeV), multiply the value by 2.721139e-5.

Formula: MeV = Eh × 0.0000272114

Reverse: Eh = MeV × 36,749.322175655

Step-by-Step Example

Start with your value in Hartree. For example: 5 Eh
Multiply by the conversion factor: 5 x 2.721139e-5
The result is: 0.000136 MeV

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.

About Megaelectron Volt

The megaelectron volt (MeV) is a unit of energy and work. One megaelectron volt equals 1.602177 × 10^-13 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 Megaelectron Volt are in 1 Hartree?

There are exactly 2.721139e-5 Megaelectron Volt in 1 Hartree. This means the conversion factor from Hartree to Megaelectron Volt is 2.721139e-5.

What is the formula to convert Hartree to Megaelectron Volt?

The formula to convert Hartree to Megaelectron Volt is: MeV = Eh × 0.0000272114. For example, to convert 10 Hartree to Megaelectron Volt, you would multiply 10 by 2.721139e-5.

What is a Hartree?