Instructions to use the Radius Calculator

• Step 1. Provide two (and only two) of the following
  

  chord

  height

  radius

  Note:
  
  • If you supply the chord and the height then the chord can not be less than twice the height. eg: chord = 1, height = 0.1
    
  • If you supply the height and the radius then the height cannot be greater than the radius. eg: height = 0.1, radius = 1.3
    
  • If you supply the chord and the radius then the radius must be greater than half the chord. eg: chord = 1, radius = 1.3
    
  
  
• Step 2. Choose your units  mm m inch feet
  
  
• Step 3. Click the "Calculate" button to calculute all the measurements shown in the diagram below.