How did they measure the wood to build the ark?

The measurements for building Noah's Ark, as described in The Bible, were given by God to Noah in cubits, an ancient unit of length based on the forearm's length from the elbow to the tip of the middle finger. The Ark was specified to be 300 cubits long, 50 cubits wide, and 30 cubits high. While exact conversions can vary, one cubit is generally estimated to be about 18 inches (46 cm), which would make the Ark approximately 450 feet long, 75 feet wide, and 45 feet high. Thus, the dimensions were determined through divine instruction rather than standard measuring tools.