To calculate the annual from the bi-weekly salary, multiply the biweekly salary by 26. In other words, the annual equals 26 times the biweekly salary:

Annual salary = 26 × Biweekly salary

To determine your annual income from biweekly pay, you would multiply your average biweekly paycheck times 26, since there are 26 biweekly pay periods per year.

There are 26 biweekly pay periods in a year, as a year has 52 weeks, and biweekly payments occur every two weeks (52/2 = 26).

The only exception is leap years whose January 1 falls on Thursday (like 2032) or Friday (like 2044). Those years can have 27 biweekly pay periods, depending on the first payment date of the year.