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Utilities / Working Days Calculator
OneFreePlace · Tool #118

Working days become useful when you know hours, leave, capacity and pay.

Model the schedule people actually work—not just Monday to Friday. Use different hours by weekday or a rotating shift cycle, exclude public holidays, add paid/unpaid leave, override individual dates, estimate overtime and wages, and audit every day behind the result.

✓ Weekly + rotating schedules✓ Hours by weekday ✓ Paid / unpaid leave✓ Overtime + wage estimate ✓ Monthly capacity audit
Working Days Calculator
Workdays · hours · leave · pay · shifts
Period

Measure your working capacity

Both boundary dates are included in the analysis.
Work scheduleEvery day gets an explicit planned-hours value.
Example 12, 12, 0, 0 repeats two 12-hour shifts then two days off. The first number applies to the anchor date. For decimal-comma hours, separate cycle values with semicolons, e.g. 7,5; 7,5; 0; 0.
Holiday dataNot selected
Country data is requested only after you select a country. Regional, company and sector rules can still be added below.
Full-day closure. One ISO date per line; optional label after |.
Date | hours or all | label. Hours reduce work but remain paid.
Date | hours or all | label. Hours reduce both work and pay. If paid and unpaid leave overlap, paid leave is applied first.
Date | final work hours | label. Highest priority—even on weekends or holidays.
Working capacity
Day-by-day engine
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working days
Choose a period and schedule.
Worked hours—after holidays and leave
Paid hours—worked + paid non-work time
Paid leave—hours not worked but paid
Unpaid leave—hours removed from both
Holiday / closure hours—paid when enabled
FTE-equivalent weeks—worked hours ÷ full-time week
Overtime hours—worked hours beyond weekly threshold
Estimated gross pay—based on entered rate assumptions
Capacity vs baseline schedule—

Compares actual worked hours with scheduled hours before holidays and leave.

Monthly breakdown—

Daily work audit

Every calendar date receives scheduled hours, holiday/leave adjustments, final worked hours and paid hours. Long periods are calculated in full but the visible ledger is capped for performance.

DateDayStatusScheduledWorkedPaidReason

Why this is more than a weekday counter

The same calendar can represent office hours, part-time schedules, four-on/four-off shifts, leave planning or capacity estimates.

Per-weekday hoursMonday can be 8 hours, Friday 6 hours, weekends zero—or any other non-negative pattern.
Rotating shiftsModel repeating daily-hour cycles such as 12,12,0,0 without forcing a seven-day week.
Paid vs unpaid time offSeparate work capacity from paid hours instead of treating every non-working day the same.
Final-hours overridesForce a particular date to any final work-hour value, including an exceptional weekend shift.
Weekly overtime modelOptionally estimate overtime from actual worked hours by Monday-based calendar week.
Audit + exportDownload the day-level calculation as CSV or the actual worked dates as all-day ICS calendar events.
Optional national holiday data uses HolidayGrid where available, with EU Holidays Data as a supported European fallback. Public-holiday calendars may not represent every region, employer or collective agreement.
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Payroll and employment rules vary.The pay and overtime sections are scenario estimates, not payroll advice. Overtime eligibility, holiday pay, leave pay, shift premiums and statutory working-time limits depend on the applicable employment contract and law.