In Genesis, what were the three dimensions of Noah’s Ark, measured in cubits?

Genesis describes Noah’s Ark as 300 cubits long, 50 cubits wide, and 30 cubits high.

Genesis 6:15 gives the measurements in that order: length, breadth, and height. The ark is then described as having rooms, a door in its side, and lower, second, and third decks. The text presents it as a huge rectangular vessel built from gopher wood and coated with pitch.

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 around 44–52 centimetres, but the text itself does not provide a modern conversion. For that reason, the dimensions are safest to quote in cubits.

The ark’s proportions are often compared with those of a stable barge because its length-to-width ratio is 6:1. Genesis does not describe it as a sailing ship with a mast or rudder; its stated purpose was to preserve life through the flood.