🔭 Astronomy Tools

Eight tools for stargazers — moon phases, planetary weight, distance conversions, and telescope math. Every one runs entirely in your browser.

🌙 Moon Phase Calculator

Free moon phase calculator for any date.

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🪐 Planetary Weight Calculator

Free calculator for your weight on other planets and the Moon.

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✨ Light Year Distance Converter

Free light year to miles, kilometers, and AU converter.

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🔭 Telescope Magnification Calculator

Free telescope eyepiece magnification calculator.

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🪐 Astronomical Unit Distance Converter

Free AU to miles, kilometers, and light years converter.

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⭐ Star Magnitude Brightness Calculator

Free star magnitude brightness ratio calculator.

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🌍 Orbital Period Calculator

Free Kepler's Third Law orbital period calculator.

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🔭 Telescope True Field of View Calculator

Free telescope true field of view (TFOV) calculator.

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