Calculators: Angular Diameter | Distance | Distance to the Horizon | Visual Field | Mountain View | Thumb Method | Height Estimation | Speed | Apparent Length | Object Width | Shadow Casting | Shadow Length

Calculate Shadow Casting: Length, Height, Altitude of the Sun


A simple calculator for shadow casting: height of the Sun, height of the object or shadow length, as well as the ratio between shadow length and object height can be determined. The height of the Sun is given in degrees. Object height and shadow length have the same unit, e.g. feet or meters. See also shadow length and direction by coordinates and time.

Sun altitude α: °
Object height h: ft, m, ...
Shadow length l: ft, m, ...
Ratio length-height: %

Decimal places:

Please enter two of the first three values, the other two values will be calculated.

l = h * sin(90°-α) / sin(α)
α = 90° - atan(l/h)/π*180°

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