How high is the Sistine Chapel’s interior at its highest point?

The Sistine Chapel’s interior reaches about 20.7 metres at its highest point.

This height refers to the chapel’s internal vertical dimension, measured from the floor to the highest part of the ceiling. The building’s proportions were designed in relation to the biblical Temple of Solomon, a comparison recorded in descriptions of the chapel’s architecture.

The chapel is also notably long and narrow, with a rectangular interior approximately 40.9 metres long and 13.4 metres wide. Those dimensions help explain why the ceiling and wall paintings are experienced as an extensive architectural program rather than as isolated pictures.

The measurement is sometimes confused with the height of the exterior building or with the distance from the floor to particular painted elements. It describes the interior’s maximum height. Michelangelo’s ceiling frescoes, including the central Genesis panels, occupy the curved vault above the chapel rather than a flat horizontal surface.