26/64 as a Decimal 0.40625 26/64 = 0.40625 = 40.625% Copy 26/64 = 0.40625 = 40.625%. Simplified: 13/32. Formula Used26 ÷ 64 = 0.40625 Frequently Asked Questions What is 26/64 as a decimal?0.40625.What is 26/64 as a percentage?40.625%.