Paternity Leave Duration Calculator
Calculate your paternity leave days, see working and calendar days off, and find your exact return-to-work date.
Last updated: 12 November 2026
Working days vs calendar days
Most statutory schemes express paternity leave in weeks or calendar days, while many employer policies use working days. This paternity leave return date calculator supports both, so you can see the real impact on your time away.
Assumptions
- Public holidays are not excluded automatically. If your policy excludes them, add those days to your allowance.
- Employer leave is added to your allowance and taken straight after it.
- If your start date falls on a non-working day and you count working days, leave starts on your next working day.
Don't know your allowance? Check it with the Paternity Leave Calculator.
Frequently asked questions
Editorial note: we summarise official government guidance and link to it. Laws change — always confirm your entitlement with your employer or the relevant authority. This page is not legal advice.