What was the biblical length of Noah’s Ark, measured in cubits?

The biblical length of Noah’s Ark was 300 cubits.

Genesis 6:15 gives the Ark’s dimensions as 300 cubits long, 50 cubits wide, and 30 cubits high. Because the ancient cubit was based on a forearm-length measure and varied historically, converting the length into modern units is approximate.

The dimensions are often discussed in relation to the Ark’s proportions. They describe a long rectangular vessel, not a conventional ship designed for navigation. Popular reconstructions sometimes assign a precise metre or foot value, but the biblical text itself uses cubits and does not define one universal modern conversion.