Chord Length

The Chord Length calculator computes the chord length based on the radius (r) and height (h).

INSTRUCTIONS:  Choose units and enter the following:

• (R) Radius of Circle 
• (h) Height of Arc (Chord to High Point - S+ee diagram)

Chord Length (L): The calculator compute the length in meters.  However, this can be automatically converted to other length units via the pull-down menu.

The Math / Science

The formula for the chord length based on radius and height of chord is:

  `L = sqrt(8h(r - h/2))`

where:

• r is the radius of a circle
• L is the length of the chord
• h is the height of the chord

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