# Elementary Charge Constant

Use Elementary Charge in Calcul.io. See what this built-in constant represents, enter it in an editable calculation, and review related values and units.

## elementaryCharge

Elementary charge

Try it yourself:

```calculio
elementaryCharge
```

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## Elementary Charge

**elementaryCharge** is the exact magnitude of the charge carried by a proton, and the magnitude of an electron’s charge.

## Charge conventions

The electron has negative charge while the constant is a positive magnitude. Use it with [faraday](https://calcul.io/constants/faraday/index.md) and [avogadro](https://calcul.io/constants/avogadro/index.md). Keep coulomb units explicit.

[All constants](https://calcul.io/constants/index.md)