How it's calculated
To find the age of someone born in 1900: subtract 1900 from today's year (2026) — that gives 126 years. If their birthday has not yet occurred this year, subtract one more year for 125 years.
Nearby birth years
See how old someone from a nearby birth year is today.
Frequently asked questions
When will someone born in 1900 turn 136?
Someone born in 1900 will turn 136 on their birthday in 2036. For reference, they will be 130 years old in 2030, 140 years old in 2040, and 150 years old in 2050.
How old was someone born in 1900 in 2010?
Someone born in 1900 was 110 years old for most of 2010. Exact age depends on whether their birthday had occurred yet in 2010.
What generation is someone born in 1900?
Someone born in 1900 belongs to Pre-Silent. Pew Research defines Pre-Silent as people born before 1928. Generational bands are approximate — different sources draw the boundaries a year or two apart.
Related calculations
- Age calculator — main page — Calculate any two-date age.
- Age if born in 1905 — Five years later cohort.
