Generation calculator

Names the generation a birth year falls into, using the Pew Research boundaries — the most widely cited set, though no definition is official.

Generational boundaries are conventions rather than facts, and different organisations draw them a year or two apart, which is why someone born in 1996 is a Millennial by one definition and Gen Z by another. Only the Baby Boom has a demographically real boundary: it is defined by an actual measurable spike in births after 1945 that ended in 1964. Everything since is marketing shorthand that stuck. The cusp positions matter more than the label — someone at the very start or end of a cohort typically has more in common with the neighbouring one than with the middle of their own, which is why the position figure is more informative than the name.