Distance to Horizon Calculator

Calculate visible distance to the horizon based on height of eye above sea level

Input Parameters

Results

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Distance to Horizon
nm
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Visible Range to Object
nm
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Distance to Horizon
miles
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Dip Angle
arc-min

Reference

Distance (nm) = 1.17 × √(height in ft) [with refraction] Geographic range = D_observer + D_object Dip = 0.97 × √(height in ft) arc-minutes