Date calculators · Pay & leave
Leave Carryover Calculator
Track expiring leave balances and planned time off. Use the earliest-expiring balance first and see unused expiry losses or leave that cannot be covered.
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Choose your dates.
Select your counting rules and calculate.
Calculation details
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How to use this calculator
Enter the projection dates, hours or days, and opening balances. Give each expiring balance its last usable date. Add planned leave usage within the projection, then calculate.
Balances remain available on their last usable date. They expire before activity on the following date. Planned leave consumes the earliest expiry first, followed by balances without an expiry. New accrual is not assumed; insufficient balances are reported as unmet leave.
A worked example
Start with 16 carryover hours usable through November 6 and 40 non-expiring hours. Use eight hours on November 5. By November 13, eight hours have expired and 40 remain usable.
Does this also project new PTO accrual?
No. Use PTO Accrual for future earning and caps. Carryover focuses on competing expiry dates and the order in which opening balances are used.
Further reading: Source workflow and conventions. Your entered rules determine this result.
Which calendar and years are supported?
Use Gregorian dates from 1900 through 2100, with results inside that range. Most daily plans are limited to 366 dates; academic terms and sprint plans allow up to 731. Forms limit the number of entries to keep calculations responsive. Holidays and policy rules come from your inputs. Date-only plans ignore DST; tools with time-zone inputs use the browser's time-zone data and explicitly resolve repeated times. Calendar exports preserve date-only markers or exact timed events as appropriate. Calculations run only when requested, without background polling.
What happens to my dates?
Calculations run on your device. Saving a calculation is optional and keeps it in this browser. A setup link contains the dates and settings you entered; anyone with the link can read them. Use one tab per saved calculator. Clear saved data from Privacy & settings.