Calculate your last working day, start date, or notice period from any two inputs and see the steps below for the date difference in YYYY-MM-DD format.
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Last Working Day Formula
The calculator uses calendar-day date arithmetic. It does not skip weekends, holidays, or company non-working days.
LWD = SD + NP
- LWD = last working day
- SD = start date
- NP = notice period in days
SD = LWD - NP
- SD = start date
- LWD = last working day
- NP = notice period in days
NP = LWD - SD
- NP = notice period in days
- LWD = last working day
- SD = start date
If you enter the start date and notice period, the calculator adds the notice period to find the last working day.
If you enter the last working day and notice period, it subtracts the notice period to find the start date.
If you enter the start date and last working day, it counts the calendar days between the two dates to find the notice period.
Common Notice Period Lengths
| Notice period | Calendar-day meaning | Typical use |
|---|---|---|
| 7 days | One week | Short-term or probation notice |
| 14 days | Two weeks | Common short notice period |
| 30 days | 30 calendar days | Common monthly notice period |
| 60 days | 60 calendar days | Longer handover period |
| 90 days | 90 calendar days | Senior roles or contractual notice |
Calendar Days vs Working Days
| Method | What is counted | Result behavior |
|---|---|---|
| Calendar days | Every day, including weekends and holidays | A 30-day notice is exactly 30 days after the start date |
| Working days | Only scheduled workdays | The final date may be later because weekends or holidays are skipped |
Example
Example 1: Find the last working day
You enter a start date of 2026-03-01 and a notice period of 30 days.
LWD = 2026-03-01 + 30 days = 2026-03-31
The last working day is 2026-03-31.
Example 2: Find the notice period
You enter a start date of 2026-04-10 and a last working day of 2026-05-10.
NP = 2026-05-10 - 2026-04-10 = 30 days
The notice period is 30 days.
FAQ
Does the calculator count weekends?
Yes. It counts calendar days. Saturdays, Sundays, and holidays are included in the calculation.
Is the start date counted as day 1?
The calculator adds the notice period as a number of full days after the start date. For example, a start date of January 1 plus 30 days gives January 31.
What if my company uses business days instead of calendar days?
You should not use the result as-is if your notice period is based on business days. Business-day rules usually skip weekends and may also skip public holidays. Check your contract or HR policy before using the final date.
