Distance to Horizon Calculator
Enter the observer's height to approximate the distance to the horizon using Earth's curvature.
CalcSimpler Examples
- 2 m ⇒ 5.05 km
- 100 m ⇒ 35.70 km
FAQ
Does weather affect visibility?
Yes, fog or haze can reduce visible distance despite the geometric horizon.
Is Earth's curvature assumed spherical?
Yes, it uses an average Earth radius and ignores refraction.
Can I enter height in feet?
Convert feet to meters before using the calculator.
Additional Information
- Formula uses Earth's mean radius of about 6,371 km.
- Result gives distance to the geometric horizon in kilometers.
CalcSimpler