An erg is a CGS energy unit.
Ergs to Electronvolts Converter — erg to eV
Convert Erg (erg) to Electronvolt (eV) using the exact conversion factor (1 erg = 624,150,907,400 electronvolt). See the formula, worked examples, conversion table, and common uses.
Ergs to Electronvolts converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
An electronvolt is the energy gained by an electron across one volt.
Result = input x 1e-7 / 1.60217663e-19.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ergs to Electronvolts
Erg and Electronvolt both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: An erg is a CGS energy unit, and an electronvolt is the energy gained by an electron across one volt.
Formula
electronvolts = ergs × 624150907446
This factor comes from each unit's defined relationship to the category's base unit: 1 erg equals 1e-7 base units, and 1 electronvolt equals 1.602177e-19 base units, so dividing one by the other gives the direct erg-to-electronvolt factor of 624150907446.
Simple example
1 erg × 624150907400 = 624,150,907,400 eV
1 erg = 624,150,907,400 electronvolts.
Real-world example
100 erg × 624150907400 = 6.241509e+13 eV
100 ergs = 6.241509e+13 electronvolts.
Conversion table
| Erg (erg) | Electronvolt (eV) |
|---|---|
| 1 erg | 624,150,907,400 eV |
| 10 erg | 6.241509e+12 eV |
| 100 erg | 6.241509e+13 eV |
| 500 erg | 3.120755e+14 eV |
| 1,000 erg | 6.241509e+14 eV |
| 2,000 erg | 1.248302e+15 eV |
Reverse conversion: Electronvolt to Erg
1 eV × 1.602177e-12 = 1.602177e-12 erg
1 electronvolt = 1.602177e-12 ergs.
ergs = electronvolts × 1.602177e-12
For a page dedicated to this direction, see Electronvolt to Erg.
Understanding the Erg (erg)
An erg is a CGS energy unit.
Understanding the Electronvolt
Electronvolt (eV) measures energy. The energy gained by a single electron accelerated through an electric potential difference of one volt — a very small amount of energy, exactly 1.602176634 × 10⁻¹⁹ joules. It is classified as a non-SI unit accepted for use with the SI, common in physics.
Where it's used: Standard unit throughout particle physics, atomic physics, and chemistry worldwide
Uses of the Electronvolt today
- Particle physics (particle accelerator energies are often quoted in GeV or TeV)
- Atomic and molecular energy levels
- Semiconductor band-gap energies
Electronvolt — sources
- BIPM SI Brochure, 9th edition — Electronvolt listed as a non-SI unit accepted for use with the SI, with its exact value fixed via the elementary charge.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many electronvolts are in 1 erg?
1 erg equals 624,150,907,400 electronvolts, using the exact defined conversion factor rather than an estimate.
How do I convert erg to electronvolt?
Multiply the erg value by 624150907400. The converter above does this instantly to whatever precision you set.
How do I convert electronvolt back to erg?
Use the reverse factor: 1 electronvolt equals 1.602177e-12 ergs. You can also use the swap control in the converter above to flip the direction instantly.
What is a erg?
Erg (erg) is a unit of energy.
What is a electronvolt?
Electronvolt (eV) measures energy. The energy gained by a single electron accelerated through an electric potential difference of one volt — a very small amount of energy, exactly 1.602176634 × 10⁻¹⁹ joules. It is classified as a non-SI unit accepted for use with the SI, common in physics.
Is the erg to electronvolt conversion exact?
Yes. The energy gained by a single electron accelerated through an electric potential difference of one volt — a very small amount of energy, exactly 1.602176634 × 10⁻¹⁹ joules. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.