# Molar Planck Constant Constant

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

## molarPlanckConstant

Molar Planck constant

Try it yourself:

```calculio
molarPlanckConstant
```

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## Molar Planck constant

**molarPlanckConstant** is Planck’s constant multiplied by the Avogadro constant, useful for expressing quantum energy on a molar basis.

## Use

It links [Planck’s constant](https://calcul.io/constants/planckConstant/index.md), [Avogadro’s constant](https://calcul.io/constants/avogadro/index.md), and molar spectroscopy. Use [multiply()](https://calcul.io/function/multiply/index.md) and [to()](https://calcul.io/function/to/index.md) to preserve units.

## Caveat

Distinguish per-particle energy from per-mole energy.

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