Decimal value of 1001011 binary number Result 1001011 = 75 Explained 1 * 26 = 64 0 * 25 = 0 0 * 24 = 0 1 * 23 = 8 0 * 22 = 0 1 * 21 = 2 1 * 20 = 1 In result: 64 + 8 + 2 + 1 = 75