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Jónsi’s birthday, by the numbers
- Jónsi was born on a Wednesday.
- Jónsi has been alive for about 18,823 days.
- Their 20,000-day milestone falls on January 24, 2030.
- Their next birthday, turning 52, is on a Friday.
- Next milestone: Jónsi turns 60 on April 23, 2035, in 8 years and 5 months. More milestone birthdays
- Jónsi is younger than 3,103 and older than 3,743 of the living celebrities on CFOTD.
- Half birthday: October 23. Birthstone: Diamond.
- Jónsi belongs to Gen X.
Age gaps
Born within weeks of Jónsi
David BeckhamSoccer player · May 2, 1975
Enrique IglesiasSinger · May 8, 1975
Eva LongoriaActor · March 15, 1975
FergieSinger · March 27, 1975
will.i.amRapper · March 15, 1975
Pedro PascalActor · April 2, 1975Days and weekdays are worked out from the birth date. Compare Jónsi’s age with anyone.
Share Jónsi’s birthday, April 23?Make something for yourself or a birthday friend.
🏅Birthday certificateAdd a name, download a PDF or image🎂Printable birthday pageA free one-page PDF for April 23⭐Birthday twin cardA square card to share
John Cena
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Gigi Hadid
Roy Orbison
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John Oliver
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Bradley Cooper
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Birth dates and details from Wikidata (checked October 15, 2026, newest names added October 27, 2026). Ages update every day. Photos are freely licensed and credited on each profile. How we build this site · Report a mistake
Frequently asked questions
How old is Jónsi?
Jónsi is 51 years old, born on April 23, 1975 in Reykjavík.
What is Jónsi’s zodiac sign?
Taurus, born April 23.
Does Jónsi have an official website?
Yes: jonsi.com.