The conversion from centimeters to inches can be done in two ways. The first is by using the formula “x cm = y inches”. If you know that 27 cm equals 10.6 inches, then this equation would equal 2.7 x 10.6 which equals 28.8″ or 29″. Alternatively, if you are measuring something with a ruler and want to convert centimeters to inch measurements, measure it out in centimeter increments and multiply each increment by 2.54 (which is how many centimeters there are per inch). For example: 27cm = 54cm x2.54=115cm or 115/2=57. 27cm = 54cm x.54= 27 cm or 27/0.54=40.96″ Bullet Point: -The conversion from centimeters to inches can be done in two ways – The first is by using the formula “x cm = y inches”. If you know that 27 cm equals ten and six, then this equation would equal two point seven times ten and six which equals twenty eight point three four or twenty nine point one five.- Alternatively, if you are measuring something with a ruler and want to convert centimeters to inch measurements, measure it out in centimeter increments and multiply each increment by two fifty four (which is how many centimeters there are per inch). For example: 27cm = 54cm