Age Difference Calculator — Calculate Age Gap Between Two People

An accurate age gap accounts for whether birthdays have occurred in the current year. For example, if Person A is born in March and Person B is born in December, in any given year before December, Person A will appear 1 year older than their actual gap. This calculator uses exact date arithmetic for precision.

Research on Nigerian marriages shows the average age gap is 4–7 years, with the man typically older. In some northern Nigerian states, larger age gaps are more common. Urban couples in Lagos and Abuja tend to have smaller age gaps than rural areas.

Relationship success depends more on shared values, communication, and mutual respect than on age gap. Research suggests that very large age gaps (10+ years) can come with generational differences in outlook, but many such relationships thrive. This is an informational calculator only.