10/64 as a Decimal 0.15625 10/64 = 0.15625 = 15.625% Copy 10/64 = 0.15625 = 15.625%. Simplified: 5/32. Formula Used10 ÷ 64 = 0.15625 Frequently Asked Questions What is 10/64 as a decimal?0.15625.What is 10/64 as a percentage?15.625%.