How old was Salah when he died?
Salah lived 433 years, from 2311 BC to 1878 BC.
Salah died at 433. The chart places his birth at 2311 BC and his death at 1878 BC, on the Ussher chronology it follows. Fourth generation after the Flood. (Gen. 11:14-15)
See it in context
A date means more beside its neighbours. The chart puts this answer in place next to everything happening around it — biblical and world history across the same six thousand years.
Now see where it sits
Everything on this page has a place on one 45×37″ chart — and once you can see what came before and after it, it stops being a fact and starts being a story you can follow.