How Overtime Pay Is Calculated

Most overtime estimates start by splitting total hours into two buckets: regular hours up to a threshold, and overtime hours above it. A common US planning threshold is forty hours per week, but your employer may use a different cutoff or measure overtime by day instead of by week.

Regular hours are paid at your base hourly rate. Overtime hours are paid at a multiplied rate—time and a half (1.5×) is the figure many people expect for hourly workers, though your situation may differ.

Some schedules spread hours unevenly—a short week followed by a long one. Overtime is usually measured per workweek, not averaged across months unless your employer says otherwise.

Salaried employees may or may not receive overtime depending on exempt status and local rules. This guide focuses on the arithmetic used when overtime does apply, not on whether you qualify.

The multiplier tells you how much each overtime hour earns compared to one regular hour. Time and a half means 1.5× the regular rate. Double time means 2×. Some employers use different multipliers for holidays or Sunday shifts.

DateToolsHQ’s Overtime Pay Calculator lets you enter a custom multiplier so you can model time-and-a-half, double time, or a policy-specific value. Always confirm the multiplier in your employee handbook or union agreement.

If your regular rate changes mid-week because of shift differentials or bonuses rolled into the base, payroll may use a blended rate. Simple calculators assume one flat regular rate for the whole period.

Add regular pay and overtime pay for the period. Regular pay equals regular hours times hourly rate. Overtime pay equals overtime hours times hourly rate times multiplier.

The Payroll Hours Calculator helps split total weekly hours into regular and overtime buckets before you apply rates. Use it when you know total hours and threshold but want the split spelled out.

Biweekly paychecks combine two weekly calculations—or one combined total if your employer measures overtime across the full pay period. Match the period your payroll system uses.

Enter your hourly rate, total hours worked, the regular-hours threshold (often 40), and the overtime multiplier (often 1.5). The tool returns regular hours, overtime hours, and estimated gross pay.

Use whole or decimal hours. A half hour of overtime is 0.5 in the total. Rounding on actual pay stubs may differ slightly from a raw decimal entry.

Pair this with how prorated salary works if you also need a partial-period base salary estimate in the same pay cycle.

Tax withholding, benefits, garnishments, and employer-specific rounding are applied separately. Gross overtime math is not net take-home pay.

Comp time, meal breaks, on-call time, and travel time may or may not count as hours worked under your employer’s rules. This guide does not classify hours—only multiplies the hours you enter.

State and local overtime rules can differ from federal defaults. Treat calculator output as a planning figure and verify against official sources for your role and location.

Keep a simple log of hours by week during busy seasons. Comparing your notes to the calculator input catches data-entry mistakes before they skew a budget.