About Generation Ages

Hi, I'm T.J.

I built Generation Ages because I kept wanting a quick, reliable way to look up the generations: which years each one covers, how old its members are today, and how they all fit together. The information was out there, but it was scattered across articles that disagreed with each other, buried in long reports, or simply out of date.

So I made the reference I wanted: one place where you can see every generation at a glance, find out where anyone fits, and dig into the details when you're curious. I run the site independently and keep it up to date as new research comes out.

What you'll find here

People look up generations for all kinds of reasons: settling a family debate about whether someone is a Millennial or Gen Z, writing a school paper, planning a marketing campaign, or simply wondering where they fit. The site is built to answer those questions quickly:

• Current age ranges for every generation, calculated from today's date so they never go stale.
• A generation calculator that tells you which generation any birth year belongs to.
• A guide to each generation covering where its name came from, why its boundaries fall where they do, and what shaped it.
• A family generation chart for seeing your whole family on one timeline.

Where the birth years come from

No government agency defines every generation, so I follow the most widely cited research definitions:

• Greatest Generation through Gen Z follow Pew Research Center's boundaries, which are also used by the Library of Congress and most major news organizations.
• Baby Boomers (1946–1964) are the one generation whose dates are recognized by the U.S. Census Bureau.
• Gen Alpha and Gen Beta follow McCrindle Research, which named both generations. Gen Alpha starts in 2013 here, instead of McCrindle's 2010, so it does not overlap with Gen Z.

Each generation page explains where other sources draw the lines differently. The full details are on the sources and methodology page.

How ages are calculated

For each generation, the oldest possible age is calculated from January 1 of the first birth year and the youngest from December 31 of the last birth year, using your device's current date. That is why a range can shift during the year, not only on New Year's Day.

Corrections and feedback

Generation definitions change as researchers publish new work, especially for younger cohorts. If you spot an error, know of a source I should look at, or just have a question, I'd love to hear from you at [email protected]. I review pages and update them when definitions or key statistics change.

Thanks for visiting!
T.J.