Your age on other planets

How old would you be on other planets?

Planets circle the Sun at different orbits and different speeds. They also spin around their axis at a different pace, thus days and years pass faster or slower there. Would you like to know what's your age on Mars or Pluto? Enter your birthdate to find out:

How to start?

Simply select your birthdate in the form above and our app will calculate how many revolutions around the Sun and how many spins on its axis did each planet make in this time - meaning, how many years and days have passed there. It will also give you the date of your next birthday on each of the planets. Read here if you want to know more about this.

More birthdays!

Why celebrate your birthday only once a year? You have more! Enjoy your Mercurian, Venusian, and Martian birthdays. Also rarer Jupiterian and Saturnian. And will you manage to live until your first birthday on Uranus? Let's see when is that.

Calculate

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Mercury

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 14th century BC
  • Type of planet: terrestrial
  • Number of moons: 0
  • Temperature: -173 to 427°C
  • Mass relative to Earth: 0.06x
  • Size relative to Earth: 0.38x
  • Distance from the Sun: 0.39 AU
  • Full revolution takes: 0.2408 years
  • One spin takes: 58.6 days

More on Mercury on NASA Science page

Venus

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 17th century BC
  • Type of planet: terrestrial
  • Number of moons: 0
  • Temperature: 462 °C
  • Mass relative to Earth: 0.82x
  • Size relative to Earth: 0.9x
  • Distance from the Sun: 0.723 AU
  • Full revolution takes: 0.61562 years
  • One spin takes: 243 days

More on Venus on NASA Science page

Earth

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: -‍️
  • Type of planet: terrestrial
  • Number of moons: 1
  • Temperature: -88 to 58°C
  • Mass relative to Earth: 1x
  • Size relative to Earth: 1x
  • Distance from the Sun: 1 AU
  • Full revolution takes: 1 years
  • One spin takes: 1 days

More on Earth on NASA Science page

Mars

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 2nd millenium BC
  • Type of planet: terrestrial
  • Number of moons: 2
  • Temperature: -87 to -5 °C
  • Mass relative to Earth: 0.11x
  • Size relative to Earth: 0.53x
  • Distance from the Sun: 1.524 AU
  • Full revolution takes: 1.8809 years
  • One spin takes: 1.025 days

More on Mars on NASA Science page

Jupiter

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 7th or 8th century BC
  • Type of planet: gas giant
  • Number of moons: 79
  • Temperature: -108 °C
  • Mass relative to Earth: 317.8x
  • Size relative to Earth: 11x
  • Distance from the Sun: 5.203 AU
  • Full revolution takes: 11.862 years
  • One spin takes: 0.41 days

More on Jupiter on NASA Science page

Saturn

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 8th century BC
  • Type of planet: gas giant
  • Number of moons: 82
  • Temperature: -139 °C
  • Mass relative to Earth: 95x
  • Size relative to Earth: 9.1x
  • Distance from the Sun: 9.539 AU
  • Full revolution takes: 29.458 years
  • One spin takes: 0.45 days

More on Saturn on NASA Science page

Uranus

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 1781/03/13
  • Type of planet: ice giant
  • Number of moons: 27
  • Temperature: -197 °C
  • Mass relative to Earth: 14.5x
  • Size relative to Earth: 4x
  • Distance from the Sun: 19.18 AU
  • Full revolution takes: 84.01 years
  • One spin takes: 0.72 days

More on Uranus on NASA Science page

Neptune

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 1846/09/23
  • Type of planet: ice giant
  • Number of moons: 14
  • Temperature: -201 °C
  • Mass relative to Earth: 17x
  • Size relative to Earth: 3.9x
  • Distance from the Sun: 30.06 AU
  • Full revolution takes: 164.79 years
  • One spin takes: 0.67 days

More on Neptune on NASA Science page

Pluto

Your age in years, days, and next birthday:

  • years
  • days

Some key facts

  • Discovered in: 1930/02/18
  • Type of planet: dwarf
  • Number of moons: 5
  • Temperature: -229°C
  • Mass relative to Earth: 0.002x
  • Size relative to Earth: 0.18x
  • Distance from the Sun: 39.53 AU
  • Full revolution takes: 248.54 years
  • One spin takes: 6.39 days

More on Pluto on NASA Science page

All in one place

Everything in one table

Planet Age in years Age in days Birthday (next)
Mercury years days
Venus years days
Earth years days
Mars years days
Jupiter years days
Saturn years days
Uranus years days
Neptune years days
Pluto years days

Don't float here all by yourself

Lets invite your friends for an interplanetary journey

Thanks for visiting!

Live long and prosper

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