Calculators

Age on Other Planets Calculator

Computes your age in planetary years for Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune based on their orbital periods.

Enter age in Earth years or date of birth

Related Astronomy Calculators

Observational

Precision synodic lunar cycle calculation & observing guide

Calculate the exact phase, illumination percentage, lunar age in days, and upcoming full moon dates for any day in history or future.

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Cosmology

Convert light-years into parsecs, astronomical units, km, and miles

Easily convert interstellar distances with built-in benchmarks including Proxima Centauri, Orion, and the Andromeda Galaxy.

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Telescopes & Optics

Calculate magnification power, exit pupil, and Dawes’ resolution limit

Determine the optical limits of your telescope and eyepiece combinations, including Barlow lenses and focal ratios.

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