Half-your-age-plus-seven rule An often-asserted rule of thumb to determine whether an age difference is socially acceptable holds that a person should never date someone whose age is less than half their own plus seven years.

Is half your age plus 7 A good rule?

What does half your age plus seven mean? If they are older than half your age plus seven years, then you are all good—at least as far as this rule of thumb is concerned.