What width does Genesis specify for Noah's Ark?

The story behind the answer

Genesis specifies a width of 50 cubits for Noah's Ark. In the same set of instructions, the vessel is 300 cubits long and 30 cubits high.

These measurements produce a length-to-width ratio of 6 to 1. That proportion is notably different from the 10-to-1 ratio formed by the ark's length and height. Because the cubit was an ancient unit whose exact value varied, modern conversions of 50 cubits are estimates rather than exact measurements in meters or feet.

The width is sometimes confused with the ark's height because both numbers are smaller than 300 and appear in the same verse. Genesis 6:15 presents the three dimensions together: length first, width second, and height third. The text does not provide a modern capacity calculation or a detailed engineering specification.

Source: Wikipedia · fact-checked Oct. 2026

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