How much of an iceberg is below the water?

About 7/8ths of an iceberg is below the water line. This figure is approximate. Although icebergs are similar, not all are the same. Varying factors are iceberg density, water density etc. Due to irregular iceberg shapes, icebergs may have varying heights out of the water.

Besides the North Atlantic, where else might icebergs be found?Icebergs in the Northern Hemisphere: FAQHow large was the iceberg that sank the Titanic?