Deadline capacity burn-down with required-hours line and daily-load safety bandLive current inputs
Date & Time
Overtime Hours Countdown Calculator
Measure whether remaining overtime fits before a deadline using eligible workdays, holiday exclusions, daily limits, spare capacity, and buffer days.
Hours remaining—
Available overtime workdays—
Required overtime per available day—
Days at entered cap—
Spare overtime capacity—
Projected finish date—
Business-day buffer—
Deadline feasibility—
Deadline burn-down
Deadline capacity burn-down with required-hours line and daily-load safety band
Remaining hours descend against the daily capacity band and the final deadline gate.
Live decision table
Deadline capacity schedule
See remaining hours and unused capacity across available days.
| Workday | Hours remaining | Planned overtime | Capacity remaining | Deadline status |
|---|
Cash-flow schedule
Annual and monthly cash-flow schedule
How to use
Translate the requirement into dated work capacity
- Enter the actual planning start date.
- Use a sustainable overtime cap.
- Match the real workweek.
- Exclude known unavailable days.
Calculation logic
Capacity and calendar availability are separate constraints
Required workdays come from hours divided by daily capacity. Calendar span then accounts for nonworking days.
The schedule never assumes every calendar day is available.
Calculation method
Count available capacity before burning down remaining hours
The deadline window determines available workdays; the calculator then compares required daily load with the entered cap.
Detailed calculation process and general formulas
R=max(H-H_c,0)A=count_available(Date_0,deadline)h_req=R/ASpare=A·h_d-RBuffer=A-ceil(R/h_d)Symbols, meanings, and units
- R
- remaining overtimehours
- A
- available workdaysdays
- h_req
- required daily overtimehours/day
- h_d
- daily caphours/day
Decision checks
Confirm policy and fatigue limits
- Local overtime law and approval.
- Rest periods and consecutive-day limits.
- Holiday and leave calendars.
- Payroll rounding and cutoff dates.
Schedule anatomy
What sets the completion date
Hours, daily capacity, workweek, and exclusions each affect timing.
Required daily load
—Average overtime needed per available workday.
Spare capacity
—Hours available beyond the requirement.
Business-day buffer
—Unused available workdays after completion.
Decision takeaway: Use the schedule as a capacity plan, then confirm approval and rest requirements.
Practical applications
Decisions this calculator is designed to support
Month-end backlog
A team allocates overtime across normal business days.
What the result clarifies: The calendar exposes whether the deadline is realistic.
Holiday week
One unavailable workday falls inside the plan.
What the result clarifies: The exclusion shifts the completion date instead of increasing daily load.
Worked example
Current-input substitution and reconciliation
Important note
This planning tool does not determine legal overtime, payroll entitlement, union rules, fatigue safety, or employer approval.
Overtime Hours Countdown Calculator FAQ
Are weekends counted?
Only when the entered workdays per week includes them.
How are holidays handled?
The entered count removes the earliest scheduled workdays as a planning approximation.
Can the last day be partial?
Yes. The final day's planned hours are capped at the remaining requirement.