How many Weeks are in a Year?

Weeks in a year calculation

One year has approximatly 52 weeks.

One calendar common year has 365 days:

1 common year = 365 days = (365 days) / (7 days/week) = 52.143 weeks = 52 weeks + 1 day

One calendar leap year occures every 4 years, except for years that are divisable by 100 and not divisable by 400.

One calendar leap year has 366 days, when February has 29 days:

1 leap year = 366 days = (366 days) / (7 days/week) = 52.286 weeks = 52 weeks + 2 days