Calculate working days off, calendar days off, and return-to-work dates. This is a free calculator built for quick repeat checks on mobile and desktop.
People usually need this when they want to know how much leave a date range really uses and when they should return to work. In the UK, notice dates, leave dates, and business-day deadlines often depend on whether weekends count, whether bank holidays are excluded, and whether the contract sets a rule that is more specific than the default assumption.
Leave calculations go wrong when people count every calendar day the same even though their real work pattern only covers certain weekdays. If the date is contract-sensitive, check whether the relevant rule is calendar days, working days, or a fixed number of weeks, because those three approaches can land on different dates.
UK guidance on this page is a practical planning layer, not legal advice. If the answer affects pay, dismissal, leave entitlement, or a formal workplace process, verify it against the contract, policy, collective rule, or official guidance that applies to your role.