What does a lot 50' X 100' tranlates into acres?

50' X 100' = 5,000 sq. ft.

5,000 sq. ft. = 0.114784 acres

An acre is 43,560 square feet (sg. ft). 5,000 sq. ft. divided by 43,560 = 0.114784 acres.

A handy website for conversions is OnlineConversions.com