GOD'S WORD® Translation
Make it 18 inches square and 36 inches high. The horns and altar must be made out of one piece [of wood].

American Standard Version
A cubit shall be the length thereof, and a cubit the breadth thereof; foursquare shall it be; and two cubits shall be the height thereof: the horns thereof shall be of one piece with it.

Berean Study Bible
It is to be square, a cubit long, a cubit wide, and two cubits high. Its horns must be of one piece.

Douay-Rheims Bible
It shall be a cubit in length, and another in breadth, that is, foursquare, and two in height. Horns shall go out of the same.

English Revised Version
A cubit shall be the length thereof, and a cubit the breadth thereof; foursquare shall it be: and two cubits shall be the height thereof: the horns thereof shall be of one piece with it.

King James Bible
A cubit shall be the length thereof, and a cubit the breadth thereof; foursquare shall it be: and two cubits shall be the height thereof: the horns thereof shall be of the same.

World English Bible
Its length shall be a cubit, and its breadth a cubit. It shall be square, and its height shall be two cubits. Its horns shall be of one piece with it.

Young's Literal Translation
a cubit its length, and a cubit its breadth, (it is square), and two cubits its height; its horns are of the same.

Exodus 30:2 Additional Translations ...