Overtime Hours Calculator
Estimate regular and overtime hours using your chosen weekly threshold.
Calculate your result
How to use this calculator
Enter your working times or pay values in the form above. Results update automatically as you type. Use Export CSV to save a copy for your own records.
Worked example
A 45-hour week with a 40-hour threshold is split into 40 regular and 5 overtime hours.
Assumptions and limitations
The threshold is user-defined. This is a mathematical split, not a determination of overtime eligibility or rates under employment law.
Clock-time calculations do not account for daylight saving transitions or time-zone changes. This calculator is for estimates and record keeping; it does not establish legal pay or overtime entitlements.
Frequently asked questions
Does this tool store my information on a server?
No. The calculator runs locally in your browser and does not submit your entries to WorkCalc Hub.
Can I use the result for payroll?
Use it as a starting estimate, and verify against official time records, employer rules, and applicable law before processing payroll.
Understanding a weekly overtime threshold
Imagine a weekly total of 45 hours and a threshold of 40 hours. The tool displays 40 regular hours and 5 hours above the chosen threshold. This is a mathematical split, not a legal determination of overtime pay.
What to check before relying on the result
Overtime laws may use daily rules, different workweek definitions, exemptions, or special pay rates. Check official guidance for your location and contract before using this estimate for payroll.
To audit the number, calculate each session in minutes first, subtract unpaid minutes, and convert the remainder back to hours and minutes. For decimal hours, divide the net minutes by 60.