Biweekly Overtime Calculator

Why biweekly payroll does not usually mean biweekly averaging

A biweekly paycheck covers two weeks, but that does not automatically mean overtime is calculated by averaging both weeks together. For many U.S. federal overtime examples, the workweek is the relevant unit. Covered nonexempt employees are generally discussed as receiving overtime for hours worked over 40 in a workweek, with exemptions and special rules possible.

That distinction matters when one week is long and the next week is short. A two-week total of 80 hours can still include overtime if week 1 has 45 hours and week 2 has 35 hours. The average is 40, but the first workweek still crossed the 40-hour threshold in this estimate.

Pay period versus workweek

A pay period is the span of time covered by a paycheck. A workweek is a fixed and recurring seven-day period used to measure weekly overtime in many calculations. A biweekly pay period usually contains two workweeks, but the weekly overtime test is applied to each workweek separately in this calculator.

Use the week 1 and week 2 fields even if the paycheck shows only one biweekly total. If you only know the total and not the split by workweek, the overtime estimate may be incomplete because 80 total hours could mean 40 and 40, 45 and 35, or many other combinations.

Biweekly overtime formula

Negative overtime is treated as zero for each week. Short hours in one week do not cancel overtime hours in the other week inside this estimate.

The calculator also shows an averaging warning when the two-week average does not reveal overtime that appears in one of the separate weeks.

Week 1 paid hours = Week 1 total hours - Week 1 unpaid break hours
Week 1 overtime = Week 1 paid hours - Weekly threshold
Week 2 paid hours = Week 2 total hours - Week 2 unpaid break hours
Week 2 overtime = Week 2 paid hours - Weekly threshold
Total regular pay = Total regular hours x Hourly rate
Total overtime pay = Total overtime hours x Hourly rate x Overtime multiplier
Total biweekly gross pay = Total regular pay + Total overtime pay

Example: 45 hours in week 1 and 35 hours in week 2

Suppose a worker earns $25 per hour. Week 1 has 45 paid hours and week 2 has 35 paid hours. With a 40-hour threshold, week 1 has 5 overtime hours and week 2 has no overtime hours. The two-week total is 80 hours, but the estimate still includes overtime because week 1 exceeded the threshold.

Exceptions and non-U.S. caveats

This calculator models a common weekly-overtime approach. It does not cover every alternative schedule, public-sector arrangement, healthcare 8-and-80 system, collective bargaining agreement, state daily overtime rule, or non-U.S. system. Some rules can be more specific than this simplified estimate.

If your employer uses a named alternative work period or a special industry rule, review the actual rule before relying on this result. The calculator is best for understanding why a biweekly paycheck total should not be used as the only overtime input.

How to use this calculator with time records

Use actual paid hours for each workweek whenever possible. If unpaid breaks are already excluded from the totals, leave the break fields at zero. If your total includes unpaid meal periods or other unpaid time, enter those hours in the break fields so the paid-hour split is closer to the payroll estimate.

For daily clock-in and clock-out entries, start with the timesheet overtime calculator to total one week at a time, then use those weekly totals here for a two-week paycheck estimate.