How high is the Earth's Stratosphere??

Question

In miles please...

Answer 1

It begins at 6 miles above the Earth's surface.

It ends at 31 miles above the Earth's

surface.

That makes it 25 miles thick.

However, the at the poles, the stratosphere begins at 5 miles above the Earth's surface.

So above the poles it is about 26 miles thick.

Answer 2

It starts just above 30,000 feet above sea level. It ends at about 164,000 feet ASL.

That's about 6 miles to just over 31 miles. Hope this helps.