Ballpark — October 5, 2026

Monthly active users on Instagram

~3 billion people

A significant jump from its early days in 2010.

Total human population in 1800

~1 billion people

It took all of human history to reach the first billion.

Number of member states in the United Nations

193 countries

Vatican City and Palestine are non-member observer states.

Number of keys on a standard piano

88 keys

This has been the industry standard since the late 1800s.

Years since the first moon landing

57 years

Neil Armstrong and Buzz Aldrin spent 21 hours on the surface.