Spiral Curve Deflection Angle Calculator

Calculate the Spiral curve deflection angle with our free online tool using the input parameters: Length, Radius

Determine the deflection angle of the spiral or transition curve from the tangent to any point using the provided length and radius of the simple curve. By inputting the length and radius values into the calculation, you can accurately calculate the deflection angle of the curve from the tangent to your desired point.

Length of spiral from tangent to any point
Length of spiral
Radius of Simple Curve
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    2 Number of calculations
    i = \frac{L^2}{6 \cdot R \cdot L_s}

    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

    Ls – 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.