Revelation 21:17

And he measured its wall to be 144 cubits, by the human measure the angel was using.

Note 144 cubits is approximately 216 feet or 65.8 meters. The measure could indicate either height or thickness.

BSB · Berean Standard Bible
And he measured the wall thereof, an hundred and forty and four cubits, according to the measure of a man, that is, of the angel.
KJV · King James Version
Its wall is one hundred forty-four cubits, by the measure of a man, that is, of an angel.

Note 144 cubits is about 65.8 meters or 216 feet

WEB · World English Bible
And he measured the wall thereof, a hundred and forty and four cubits, according to the measure of a man, that is, of an angel.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

an
Revelation 7:4; Revelation 14:3