Direct answer
Before submitting a PTO request, count the workdays in the date range and convert those days into the same PTO unit your employer uses.
If your PTO bank is in hours, the request should be checked in hours. If the request includes holidays, weekends, half days, or variable shifts, the calendar span alone is not enough.
The safe workflow is: count workdays, convert to PTO hours, compare with current or projected balance, then check policy before submitting.
Formula and example
PTO hours requested = missed scheduled workdays times scheduled hours per day, adjusted for holidays, half days, and custom non-work dates.
For example, a Monday-to-Friday vacation on an 8-hour schedule usually needs 40 PTO hours. If one company holiday is paid separately, the request may need only 32 PTO hours.
Comparison table
| Request | Schedule | Adjustment | PTO hours |
|---|---|---|---|
| 5 weekdays | 8 hours/day | No holiday | 40 |
| 5 weekdays | 8 hours/day | 1 paid holiday | 32 |
| 2 half days | 4 hours each | No holiday | 8 |
| 3 compressed days | 10 hours/day | No holiday | 30 |
Step-by-step calculation
Key checks
- Choose the exact vacation start and end dates.
- Count only the workdays you would normally work inside that range.
- Convert each missed workday into scheduled PTO hours.
- Remove holidays or office closures if policy says they do not use PTO.
- Compare the final request with your current or projected PTO balance before submitting.
Worked example
A useful example is easier to trust when each assumption is visible. The sample below follows the same order you should use for your own numbers.
Key checks
- Your balance is listed in hours instead of simple whole days.
- The request includes partial days or different hours per day.
- You want to compare the request with current and projected balance.
What can change the result
Part-time, compressed, rotating, and variable schedules can change how many hours each day uses.
Company holidays, blackout dates, approval rules, and minimum increments can change whether a mathematically valid request is actually acceptable.
Projected accrual matters if the trip starts after more PTO will be earned.
Common mistakes to avoid
Key checks
- Do not count weekends against PTO unless you normally work them or policy requires it.
- Do not assume holidays are automatically excluded from PTO.
- Do not use days when the official balance is tracked in hours.
- Do not ignore partial days or different shift lengths.
- Do not submit before checking whether projected balance will be available by the trip date.
When to use the calculator
Use the work days calculator to confirm the date range, then use the PTO calculator to convert the request into hours and compare it with your balance.
A good workflow is to answer the narrow question first, then open PTO Calculator when you need to test different inputs or carry the result into another work decision.
Open PTO Calculator