33/64 as a Decimal 0.515625 33/64 = 0.515625 = 51.5625% Copy 33/64 = 0.515625 = 51.5625%. Formula Used33 ÷ 64 = 0.515625 Frequently Asked Questions What is 33/64 as a decimal?0.515625.What is 33/64 as a percentage?51.5625%.