The antipode of a place is the point straight through the centre of the Earth from it. Pick a place and see where you would come out, and what is there.
How to use it
Type a place, or press My location, or click the map.
Read the antipode, what is there, and the nearest town. The globe shows both points; drag it to spin.
Press Go to the antipode to swap the two points.
5 practical uses
Answer where you would come out if you dug straight down.
Find the far side of the world for a story, a lesson or a quiz.
See which places share your latitude in the other hemisphere.
Check the time and the season at your antipode.
Plan a "furthest possible" trip.
The maths behind it
The antipode of (φ, λ) is (−φ, λ ± 180°): the latitude changes sign and the longitude moves half way round. Every point on the surface is 20,015 km (πR) from its antipode along any great circle and 12,742 km through the centre. The land test is a point-in-polygon test against the country outlines.
The point on the opposite side of the Earth, straight through the centre: the same latitude in the other hemisphere and the longitude plus or minus 180 degrees.
Is my antipode on land?
Probably not. Only about 4 % of land has land at its antipode. Spain faces New Zealand, Chile faces China, and most of Europe and North America face the Indian and Pacific Oceans.
What is the tunnel globe?
The same pair of points shown on two globes side by side, with the antipode always facing you on the second globe.
Embed this tool on your website
Paste this code where the tool should appear. It shows the tool alone, without this page's text, and links back here. It is free to use; the map data credit stays on the map.
Change height to suit your page. To open the tool with a place already set, add the settings from this page's address bar (the part after #) to the end of the src. The embedded tool asks the visitor's browser for their location only when they press the button, and the allow attribute lets that work inside the frame.