What was the biblical Ark’s length in cubits, according to Genesis?

According to Genesis, the biblical Ark was 300 cubits long.

Genesis 6:15 gives the Ark’s dimensions as 300 cubits in length, 50 cubits in width, and 30 cubits in height. These proportions make the vessel six times as long as it is wide and ten times as long as it is high.

A cubit was an ancient unit commonly based on the length from the elbow to the fingertips, but its exact value varied by culture and period. For that reason, converting the Ark’s length into modern metres or feet involves an estimate rather than a single certain measurement.

The text gives dimensions in cubits, not a modern unit. The length should therefore be answered as 300 cubits. The Genesis account also says the Ark had rooms, a roof, and three decks, adding construction details beyond the basic measurements.