Pay, Time Off & Work Hour Calculators

Weekly Hours Calculator

Use this weekly hours calculator to add daily hours and estimate regular hours, total weekly hours, and overtime hours after 40.

Last updated: July 2026

Estimate only: This workplace calculator provides an estimate only and is not legal, tax, payroll, HR, financial, accounting, or employment advice. Pay, overtime, time card, holiday pay, deductions, and final paycheck results can depend on employer policy, payroll records, tax rules, labor rules, and individual facts. Verify important results with your employer, payroll records, official labor guidance, or a qualified professional.

Browser-based estimate

Weekly Hours Estimate

Add daily work hours to estimate total weekly hours, regular hours, and overtime hours after 40.

How weekly hours are estimated

Enter daily hours for Monday through Sunday. The calculator adds them, treats up to 40 as regular hours, and shows hours above 40 as overtime hours.

This is a simple weekly-hours estimate. Actual overtime can depend on the employer workweek, hours actually worked, exemptions, agreements, and location-specific rules.

Example weekly hours calculation

If you work 8 hours Monday through Friday, total weekly hours are 40 and overtime is 0.

If you work 9 hours Monday through Friday, total weekly hours are 45 and overtime after 40 is 5 hours.

When the weekly total may differ

  • Your employer's workweek starts on a different day.
  • Some entered hours are paid leave rather than hours worked.
  • Breaks need to be subtracted first.
  • Daily overtime or special rules apply.
  • Payroll records include corrections or rounded punches.

Frequently Asked Questions

Does this calculate pay?

No. It calculates hours. Use the overtime pay or hourly paycheck calculator for pay estimates.

When does overtime start?

This calculator shows hours above 40 as overtime hours, but actual overtime rules can vary.

Should I include PTO hours?

Only include hours according to the rule you are checking. PTO often does not count as hours actually worked for overtime.

Can I use decimal hours?

Yes. Enter 7.5 for seven and a half hours.

What if my workweek is not Monday to Sunday?

Use the daily fields as a simple total, then compare with your employer's official workweek.

Estimate only: This workplace calculator provides an estimate only and is not legal, tax, payroll, HR, financial, accounting, or employment advice. Pay, overtime, time card, holiday pay, deductions, and final paycheck results can depend on employer policy, payroll records, tax rules, labor rules, and individual facts. Verify important results with your employer, payroll records, official labor guidance, or a qualified professional.