“These are the measurements of the altar in long cubits,a that cubit being a cubit and a handbreadth: Its gutter is a cubit deep and a cubit wide, with a rim of one spanb around the edge. And this is the height of the altar:
That is, about 21 inches or about 53 centimeters; also in verses 14 and 17. The long cubit is the basic unit for linear measurement throughout Ezekiel 40–48.
That is, about 11 inches or about 27 centimeters
From the gutter on the ground up to the lower ledge that goes around the altar it is two cubits high, and the ledge is a cubit wide.c From this lower ledge to the upper ledge that goes around the altar it is four cubits high, and that ledge is also a cubit wide.d