How many cm are in 1 in? Chemistry Measurement Unit Conversions 1 Answer anor277 Aug 30, 2016 #1 " inch"# #=# #2.54*cm# Explanation: Because a standard ruler was #12# #"inches"# long, the new standard ruler is #30.5*cm#. Answer link Related questions How can I memorize the metric system? How can you convert centimeters to millimeters? How can i convert centimeters to meters? What celsius temperature is the same when converted to fahrenheit? What metric unit is used to measure distance? How can I convert Celsius into Kelvin? If a planet is 13 billion kilometers from the Sun, and the distance of an Astronomical Unit (AU)... What is an example of a unit conversion practice problem? What is the pressure conversion factor for torr to kpa? How do you convert units of measurement? See all questions in Unit Conversions Impact of this question 1759 views around the world You can reuse this answer Creative Commons License