How many centimeters are in a inch? Prealgebra Ratios, Proportions, Units and Rates Unit Conversions 1 Answer sente · mason m Mar 30, 2016 #"1 in"# #=# #"2.54 cm"# Explanation: As shown here, as well as in many other sources. Note that unlike many other unit conversions which are approximations, the #"1 in"# #=# #"2.54 cm"# is exact. Answer link Related questions How do you convert 73 mi/h = ____km/s? Every morning for breakfast, Mika drinks 20 cL of orange juice. How many milliliters of orange... David takes 300 milligrams of medicine every day. How many grams is this? A manufacturer ships its product in boxes with edges of 4 inches. If 12 boxes are put in a... How many feet is 15 miles? How many feet in a mile? How many meters in a mile? How many feet are in .55 miles? How many miles are in 100 feet? How do you find out how many feet are in a mile? See all questions in Unit Conversions Impact of this question 4136 views around the world You can reuse this answer Creative Commons License