Calculator
Example Data Table
| Case | Start | End | Excluded Days | Credit % | Credited Service Days |
|---|---|---|---|---|---|
| A | 01 Jan 2020 09:00 | 01 Jan 2025 17:00 | 0 | 100 | 1827.33 |
| B | 15 Mar 2018 08:30 | 15 Mar 2026 17:30 | 30 | 100 | 2892.38 |
| C | 01 Jul 2021 09:00 | 01 Apr 2026 18:00 | 14 | 90 | 1549.24 |
| D | 10 Oct 2022 07:00 | 10 Oct 2026 19:00 | 45 | 80 | 1133.20 |
Formula Used
Original service days = (End timestamp − Start timestamp) ÷ 86,400
Net service days = Original service days − Excluded days
Credited service days = Net service days × (Service credit ÷ 100)
Estimated workdays = Credited service days × (Days per week ÷ 7)
Estimated work hours = Estimated workdays × Hours per day
Total months and years use average calendar conversions for fast planning summaries.
How to Use This Calculator
FAQs
1. What does this calculator measure?
It measures elapsed service time between two timestamps. It also adjusts for excluded days, service credit, work schedule, and estimated work hours.
2. Why would I enter excluded days?
Excluded days help remove gaps from the service period. Common examples include unpaid leave, suspension, breaks in duty, or non-qualifying time.
3. What is service credit percentage?
Service credit percentage scales the net days. A value of 100 keeps all eligible days. A value of 50 counts half of them.
4. Does the tool handle partial days?
Yes. Start and end times allow sub-day precision. The result includes hours and minutes, while totals also appear as days, months, and years.
5. What does include end date do?
That option adds one full day to the end point. It is useful when policies count the final date as fully served.
6. Are months and years exact?
The detailed breakdown is calendar-based. The total months and years are summary conversions, so they are best for planning, not legal interpretation.
7. What can I export?
You can export the calculated summary as a CSV file or PDF file. This is helpful for records, audits, and internal reporting.
8. Can I use this for payroll or HR reviews?
Yes, for estimates and documentation support. Always compare the output with your official policy rules before using it for final decisions.