The decade

Born in the 1940s

Written . By the BirthAlmanac team.

Years
1940–1949Ten years.
Age in 2026
77 to 86The age a birthday in 2026 brings.
Generations
Silent Generation and Baby BoomersAs the sources named on the generations page draw them.
Leap years
1940, 1944 and 1948The years with a 29 February.

The world they were born into

The 1940s were dominated by the Second World War, which ended in 1945 after the atomic bombings of Hiroshima and Nagasaki. The United Nations was founded the same year. India and Pakistan became independent in 1947, and in South Africa the National Party came to power in 1948 and began to write apartheid into law.

Growing up

In Britain the National Health Service opened in 1948, and across much of the western world the return of millions of servicemen started the baby boom from 1946. Rationing went on in Britain long after the war, and did not end until 1954, so children of the late 1940s grew up in the recovery, and in the queues.

Which generation

Births from 1940 to 1945 belong to the Silent Generation, and from 1946 to 1949 to the Baby Boomers. The boundaries are conventions rather than facts, and the generations page names the source for each one.

19001920194019601980200020202040The Greatest Generation1901–1927The Silent Generation1928–1945Baby Boomers1946–1964Generation X1965–1980Millennials1981–1996Generation Z1997–2012Generation Alpha2010–2024Generation Beta2025–203919401900194019802020The Greatest Generation, 1901–1927The Silent Generation, 1928–1945Baby Boomers, 1946–1964Generation X, 1965–1980Millennials, 1981–1996Generation Z, 1997–2012Generation Alpha, 2010–2024Generation Beta, 2025–20391940

Boundary set by researchers or the birth record Named by a writer or a consultancy, or claimed by two sources; the dates are not settled

Only the baby boom has an official definition, taken from the birth rate. Everything after Generation Z, and everything before the Silent Generation, is a label somebody proposed. McCrindle starts Generation Alpha in 2010, before Pew ends Generation Z in 2012, so those three years belong to both. As at 2026.

The marked line is 1940, where the decade begins.

Year by year

The Chinese year begins not on 1 January but at a new moon, usually the second after the December solstice, and from 1900 to 2100 always between 21 January and 20 February. In the 1940s it began as early as 22 January, in 1947, and as late as 15 February, in 1942, so a birthday in January or early February belongs to the animal of the year before. The table gives the day each year began.

New year dates are worked out from the new moons and the solar terms, and checked against published tables. Born before the new year →

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