# Spiral curve tangent distance

Calculate the Spiral curve tangent distance with our free online tool using the input parameters.

Determine the distance along the tangent from any point on the spiral or transition curve by utilizing the provided curve length and radius. By inputting the length and radius values into the calculation, you can accurately calculate the distance along the tangent at any desired point on the curve.

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The variables used in the formula are:

`Y`

– Tangent distance to any point on the spiral`L`

– Length of spiral from tangent to any point`Ls`

– Length of spiral`R`

– Radius of Simple Curve