In Genesis, what length does the Bible give Noah’s Ark?

Genesis gives Noah’s Ark a length of 300 cubits.

The same passage specifies the vessel’s width as 50 cubits and its height as 30 cubits. A cubit was an ancient unit based roughly on the length of a forearm, so its exact modern equivalent is uncertain. Depending on the cubit used, 300 cubits is often estimated at roughly 135 to 150 metres.

The measurements appear in Genesis 6:15, where God instructs Noah how to construct the ark. The text also describes three decks, rooms, and a covering or window arrangement. These details have made the ark’s proportions a continuing subject of religious interpretation and engineering discussion.

The dimensions should not be confused with measurements from later artistic reconstructions, which vary considerably. The biblical figure is a length, not the ark’s total perimeter or capacity.