Some ways in English to say '50 years' are:
Five decades
One jubilee (any important anniversary, but especially a fiftieth anniversary)
Five score years and ten
Ten times five years
Fifty birthdays
Fifty anniversaries
Fiftieth (anniversary, birthday...)
Golden anniversary (for wedding anniversaries)
Quinquagenary (fiftieth anniversary)
Ten quinquenniums [or ten quinquennia] (ten periods of five years)
Quinquagenerian (a person in or entering their fifities; aged fifty to fifty-nine)
Quinquiplicate decades (five times ten years)
Ten quinquiplicate (ten times five years)
Quinquagesima (set of fifty; also is the term for Shrove Tuesday, the beginning of Lent)
Quinquagesimal (one of a set of fifty)
Half a century
Point five of a century
One-twentieth of a millennium
Point zero five of a millennium
Six hundred months
Twenty-six hundred weeks
Two thousand six hundred weeks
Twenty-six hundred weekends (approximately)
Two thousand six hundred weekends (approximately)
Eighteen thousand two hundred and fifty days (plus an extra day for however many leap years occur in the period of fifty years being described)
Two hundred seasons
Fifty summers
Fifty falls (autumns)
Fifty winters
Fifty springs
Chat with our AI personalities
Cinquante ans is how you say fifty years old
You can say "J'ai 40 ans" in French to mean "I am 40 years old."
In French, you say "cent ans" to mean "100 years old."
You would say "J'ai soixante ans" in French to indicate that you are 60 years old.
You would say "Il a quarante ans" in French to mean "He is 40 years old."