53/64 as a Decimal 0.828125 53/64 = 0.828125 = 82.8125% Copy 53/64 = 0.828125 = 82.8125%. Formula Used53 ÷ 64 = 0.828125 Frequently Asked Questions What is 53/64 as a decimal?0.828125.What is 53/64 as a percentage?82.8125%.