# How to find bond length from potential?

A bonding potential like the Morse potential or a Lennard-Jones potential is characterized by a distance at which the potential is minimal, referred to as e.g. 'equilibrium bond distance'.

Is this distance the same as the bond length? Or is the bond length the average distance, depending on the energy level? Or the root mean square distance?

From what I've found, texts describing the potential don't use the term 'bond length', while texts about bond lengths (see e.g. wikipedia) give lists and experimental methods, but no calculations. I'm asking for the connection between these two approaches here (if possible with references).