Ezekiel 43:13

And these are the measures of the altar by cubits (the cubit is a cubit and a handbreadth): the bottom shall be a cubit, and the breadth a cubit, and the border thereof by the edge thereof round about a span; and this shall be the base of the altar.

Exodus 27:1-8

And thou shalt make the altar of acacia wood, five cubits long, and five cubits broad; the altar shall be foursquare: and the height thereof shall be three cubits.

2 Chronicles 4:1

Moreover he made an altar of brass, twenty cubits the length thereof, and twenty cubits the breadth thereof, and ten cubits the height thereof.

Ezekiel 40:5

And, behold, a wall on the outside of the house round about, and in the man's hand a measuring reed six cubits long, of a cubit and a handbreadth each: so he measured the thickness of the building, one reed; and the height, one reed.

Ezekiel 41:8

I saw also that the house had a raised basement round about: the foundations of the side-chambers were a full reed of six great cubits.

Treasury of Scripture Knowledge

Summary

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.

Bible References

The measures

Exodus 27:1
And thou shalt make the altar of acacia wood, five cubits long, and five cubits broad; the altar shall be foursquare: and the height thereof shall be three cubits.
2 Chronicles 4:1
Moreover he made an altar of brass, twenty cubits the length thereof, and twenty cubits the breadth thereof, and ten cubits the height thereof.

The cubit

Ezekiel 40:5
And, behold, a wall on the outside of the house round about, and in the man's hand a measuring reed six cubits long, of a cubit and a handbreadth each: so he measured the thickness of the building, one reed; and the height, one reed.
Ezekiel 41:8
I saw also that the house had a raised basement round about: the foundations of the side-chambers were a full reed of six great cubits.

American Standard Version Public Domain