When will you have enough PTO?
Start with the balance you can use today. Enter your target in hours, the fixed amount added at each credit, and the date of the next credit. For weekly accrual use seven days between credits; for biweekly accrual use 14. This model uses equally spaced credits. It does not support twice-monthly or monthly accrual dates because those gaps vary.
If a day off costs eight PTO hours, a five-day trip needs 40 hours. A person working ten-hour shifts may need 50. Use the hours your employer charges for those specific days, rather than assuming every day has eight hours. The PTO hours-to-days guide explains that conversion.
A worked example
You have 24 hours, need 40, and earn four hours every two weeks. The remaining 16 hours require four credits. If the next credit is October 2, 2026, those credits arrive October 2, October 16, October 30 and November 13. The estimated target date is November 13—not November 27. The first credit is already on the date you entered.
The formula is credits needed = round up((target − current balance) ÷ hours per credit). When credits are needed, the target date is next credit date + (credits needed − 1) × interval days. If you already have enough hours, the tool reports that the target is reached.
Check what might change before booking
The estimate assumes you take no leave along the way and keep the same accrual rate. A waiting period, service anniversary, unpaid absence or year-end adjustment may change the answer. An optional cap prevents the tool from forecasting a target that exceeds the maximum allowed balance. It does not model an annual earning limit, forfeiture or carryover reset.
For an hours-worked policy, credits may vary. Use the PTO accrual rate calculator to understand that rate; do not treat an average paycheck as a guaranteed future credit. To reconcile what has already happened, use the PTO balance ledger.
Frequently asked questions
Does reaching the target mean my leave is approved?
No. This estimates a balance. Approval, blackout dates and when a posted credit becomes usable depend on your employer.
Can I subtract leave I plan to take first?
Only use a lower starting balance if that accurately represents your scenario. If the timing of leave interacts with a cap, a dated transaction model is needed. This calculator does not model that sequence.
Should I round my accrual rate to two decimals?
Use the precision specified by the policy. Repeatedly rounding an underlying rate can move the projected date when the target is close to a credit boundary.
Read how to plan PTO for a trip and how caps differ from carryover limits.