Distance to the Horizon Calculator - Free, Instant, In Your Browser
Enter your height above the ground or sea level (e.g. eye height while standing, or a viewpoint's elevation) to calculate the horizon distance.
How to use DISTANCE → HORIZON-CALCULATOR
- 1Enter the required date(s) and details above.
- 2Click Calculate - DISTANCE → HORIZON-CALCULATOR runs instantly, right in your browser.
- 3Read your result below.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Distance ≈ √(2 × Earth's radius × height) - a standing person's eye height (~1.7m) gives a horizon about 4.65km away.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.