Utilize our complimentary online tool to compute the deflection angle of a Spiral curve. Input the following parameters: Length, Radius.

Ascertain the deflection angle for the spiral or transition curve from the tangent to a selected point using the given length and radius of the simple curve. By entering the length and radius values into the calculation, you can precisely determine the deflection angle of the curve from the tangent to your chosen point.

## Spiral Curve Deflection Angle formula

The variables used in the formula are:

**i –** Tangent deflection angle to any point on the curve

**L –** Length of spiral from tangent to any point

**L _{s} –** Length of spiral

**R –** Radius of Simple Curve

The calculator uses the formula for calculating the deflection angle **i** of the spiral or transition curve based on the given values of **L**, **R**, and **Ls**.