Orbital Period Calculator - Free, Instant, In Your Browser
Enter a distance from the Sun in astronomical units (AU) to calculate the orbital period in years.
How to use Orbital Period Calculator
- 1Paste your text or data into the input box above.
- 2Orbital Period Calculator runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Kepler's third law simplified for solar orbits: period (years) = distance (AU) raised to the power 1.5.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.