RadiusCalc

A specialized calculator for calculating a radius. You only provide two measurements; a chord length, and a rise. The chord is the length of a straight line where each end touches the arc of the circle. The rise is the length from the midpoint of the chord to the arc, or if measuring the other side of the arc, then the rise would be measured differently. Simply measure from the straight line chord ends square to the arc where the chord is touching the arc at the midpoint.