What is the Ratio of 1 mm to 1 cm?

Answer: A ratio means a comparison of the amount of quantity of one number containing the other. The ratio of any two numbers is denoted in a:b format.

Both mm (millimetre) and cm (centimetre) are units of length measurement. To calculate the ratio of two quantities, both need to be in the same unit form. So, we need to convert 1cm into mm. To convert 1cm into mm we multiply it by 10 since 1cm= 10mm. The ratio of 1mm to 1 cm is calculated as,

Since, 1cm= 10mm

The required ratio= 1mm/10mm= 1:10

Hence, the required ratio of 1mm to 1cm is 1:10.