5/16 as a Decimal 0.3125 5/16 = 0.3125 = 31.25% Copy 5/16 = 0.3125 = 31.25%. Formula Used5 ÷ 16 = 0.3125 Frequently Asked Questions What is 5/16 as a decimal?0.3125.What is 5/16 as a percentage?31.25%.