How old would I be on Neptune?
Enter your age in the box above, then click the CALCULATE button to see how old you'd be on the planet Neptune.
A year on Neptune is almost 165 Earth years long. This means that every living human is less than one Neptune year old. Neptune doesn't have months, because the length of a month is related to the orbit of Earth's Moon. Therefore your age on Neptune is shown above as a decimal (to two places).