According to Genesis, how tall was Noah’s Ark?

According to Genesis, Noah’s Ark was 30 cubits tall.

Genesis 6:15 gives the Ark’s three principal dimensions: 300 cubits long, 50 cubits wide, and 30 cubits high. The height is therefore one-tenth of the stated length and three-fifths of the stated width. The passage presents the measurements as instructions from God to Noah before the Flood.

A cubit was an ancient unit based broadly on the length of a forearm, so its exact modern equivalent is uncertain. Estimates commonly place the biblical cubit at roughly 44–52 centimetres, making 30 cubits approximately 13–16 metres. The text does not specify a modern unit or describe the Ark as a conventional sailing vessel.

This measurement is distinct from the Ark’s length and width, which are separate biblical figures. Later discussions sometimes convert all three dimensions into metres, but those conversions are estimates rather than numbers stated in Genesis.