I read today that in 1941-42 the Japanese spent 1.2 billion yen on their navy, how much that would be equivalent to today?

by Clowncarofpoop

The source for the money spent was Janes fighting ships of WW2.

When_Ducks_Attack

According to this website, the Yen of 1941 is worth about sixteen 2015 USD.

So, roughly $16billion.