And these are the measures of the altar after the cubits: The cubit is a cubit and an hand breadth; even the bottom shall be a cubit, and the breadth a cubit, and the border thereof by the edge thereof round about shall be a span: and this shall be the higher place of the altar.
The altar size is measured in cubits. A cubit is about 18 inches. The bottom is one cubit wide, the top is also one cubit wide. The border around the edge is a span, which is about 9 inches. This is the height of the altar.