9/64 as a Decimal 0.140625 9/64 = 0.140625 = 14.0625% Copy 9/64 = 0.140625 = 14.0625%. Formula Used9 ÷ 64 = 0.140625 Frequently Asked Questions What is 9/64 as a decimal?0.140625.What is 9/64 as a percentage?14.0625%.