A completely practical utility for calculating and visualizing the height required to achieve line of sight between two locations. Try it online!

• You and your house are on perfectly spherical and terrain-free Earth.
• Your infinite-vision eyeballs are 1.6m above your feet.
• Your house is a single small point that is conveniently still observable.

ThreeJS globe class from vasturiano's three-globe.

Public domain globe icon from dannya.

Geocoding done via Nominatim.