Space Birthday

Do you know how many Mars years old you are?


If you were born on Mars, how old would you be today? Or how many times has Jupiter gone around the sun since you were born? What's your age in Venusian years? This page can tell you! Enter your and your friends' birthdays using the form below. The information will only be stored on this computer, not on the server, so don't worry! (PS - I also have some printable space birthday worksheets you can download if you want to do these calculations yourself.)

  • Your/your friend's name:
  • Your/your friend's birthday:
You need to enter the year correctly - your Jupiter birthday doesn't fall on the same day each year, in fact most years you don't even have one!

J. R. R. Tolkien's Birthdays

J. R. R. Tolkien was a linguist, who wrote the Hobbit for his children. It became so popular he wrote a sequel, Lord Of The Rings, and other novels.. Links: Amazon, Wikipedia, Other Celebrity Space Birthdays

 J. R. R. Tolkien turns 537 Mercury years old on the 5th May, 2021.
 J. R. R. Tolkien turns 69 Mars years old on the 14th October, 2021.
 J. R. R. Tolkien turns 211 Venus years old on the 25th October, 2021.
 J. R. R. Tolkien turns 129 Earth years old on the 3rd January, 2022.
 J. R. R. Tolkien turns 11 Jupiter years old on the 17th June, 2022.
 J. R. R. Tolkien turns 5 Saturn years old on the 18th April, 2039.
 J. R. R. Tolkien turns 1 Neptune year old on the 19th October, 2056.
 J. R. R. Tolkien turns 2 Uranus years old on the 27th August, 2060.

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