Apothem Calculator Enter any 2 values to calculate Length of Side in ft cm m mm Number of Sides Apothem in ft cm m mm Calculate Reset Show Calculation Steps ▼ More CalculatorsLength Calculators3 4 5 Rule CalculatorReverse Area Calculator Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment.