Add Days to a Date Calculator
Add calendar days or UK working days to a date to find a deadline.
Your result
Updates as you type. Based on 2025/26 UK figures where relevant.
How this is worked out
For calendar days we simply count forward. For working days we skip weekends and England and Wales bank holidays.
Tips
- Check whether a deadline counts the start day, the end day or both.
- Bank holidays differ between England and Wales, Scotland and Northern Ireland.
- When a bank holiday falls on a weekend, a substitute day is usually given.
Guides for this calculator
- How to Calculate a Date in the Future in the UK: Step-by-Step Guide
- A Date in the Future: Common Mistakes, Tips and FAQs
More dates and time calculators
Frequently asked questions
How does the add Days to a Date Calculator work?
For calendar days we simply count forward. For working days we skip weekends and England and Wales bank holidays.
Which bank holidays are included?
Working-day calculations use England and Wales bank holidays from 2025 to 2027.
Are start and end dates included?
Days-between counts the difference between dates; working-day counts include both start and end dates.
Is holiday entitlement including bank holidays?
The statutory 5.6 weeks can include bank holidays. Check your contract for how your employer handles them.
This calculator gives an estimate for general information. It isn't financial, tax, legal or medical advice. Check official figures on GOV.UK or NHS.uk, or speak to a qualified adviser.