# Molar Volume Constant

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

## molarVolume

Molar volume of an ideal gas at T=273.15 K and p=101.325 kPa

Try it yourself:

```calculio
molarVolume
```

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## Molar volume: volume per amount

**molarVolume** is a molar-volume reference used to relate amount of substance to volume under specified conditions.

## Use

Combine it with the [Loschmidt constant](https://calcul.io/constants/loschmidt/index.md) and [Avogadro constant](https://calcul.io/constants/avogadro/index.md). Use [multiply()](https://calcul.io/function/multiply/index.md) for amount-to-volume calculations and [to()](https://calcul.io/function/to/index.md) for units.

## Caveat

Gas molar volume depends on temperature and pressure; state the convention.

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