Calculate Your Exact Age, Gravitational Weight, and Next Birthday Across the Solar System
Your planetary age is your age in Earth days divided by that world's orbital period in Earth days. A year on Mercury is shorter than an Earth year, while a year on Neptune is much longer, so the same birth date produces a different age on each world.
The weight estimate scales the value you enter by each world's surface gravity relative to Earth's. The result is a familiar kilogram or pound equivalent for comparison; your mass itself does not change. This simplified calculator uses rounded orbital periods and gravity ratios, so treat the figures as educational estimates.
Planetary measurements and reference values: NASA/NSSDC Planetary Fact Sheet.