What total length does Genesis give for Noah’s Ark?

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

Genesis 6:15 lists the Ark’s dimensions as 300 cubits long, 50 cubits wide, and 30 cubits high. The passage uses the ancient cubit, a measurement generally based on the length of an adult forearm, so its exact modern equivalent is uncertain.

Depending on the cubit standard used, 300 cubits is often estimated at roughly 135 to 157 metres, or about 450 to 515 feet. The uncertainty affects modern conversions but not the biblical number itself.

The dimensions are presented as a long rectangular vessel divided into decks or levels. Modern replicas use different interpretations of the cubit and of the text’s construction details, so their exact size can vary.