Annual Income Calculator

This calculator first converts whatever pay rate and frequency you enter into a weekly figure, since a week converts cleanly to a year (exactly 52 weeks), then expands that weekly figure back out to every other frequency. Converting to hourly or daily uses your entered hours per week or days per week, since those aren't fixed the way weeks-per-year is.

Semi-monthly (paid twice a month, 24 pay periods a year) is calculated from the annual figure directly (annual ÷ 24) rather than from weekly, since semi-monthly periods don't line up evenly with weeks, an important distinction from biweekly (paid every two weeks, 26 pay periods a year), which is often confused with semi-monthly but is a different schedule entirely.

Biweekly means every 2 weeks, 26 paychecks a year, and occasionally 27 in a year with an extra pay period. Semi-monthly means twice a month, always 24 paychecks a year, typically on fixed dates like the 15th and the last day of the month. Because 26 and 24 are different numbers, the same annual salary produces a different per-paycheck amount under each schedule, which is why this calculator treats them as distinct frequencies rather than treating semi-monthly as 'half of biweekly'.