UK date calculators
Free UK date calculators for working days, deadlines, pay dates, age, week numbers and employment dates. Choose a calculator below for an instant result.
Working days and date calculations
UK Working Days Calculator
Count weekdays between two dates and optionally exclude England and Wales bank holidays.
Add Working Days to a Date
Add or subtract working days from a date while skipping weekends and applicable bank holidays.
Days Between Dates Calculator
Find the number of calendar days, working days, weeks or months between two dates.
UK Week Number Calculator
Find the ISO week number for any date and see the dates covered by that week.
Work, pay and employment dates
UK Holiday Entitlement Calculator
Estimate statutory holiday entitlement based on your working pattern.
UK Notice Period Calculator
Work out key dates when giving or receiving employment notice.
UK Payday Calculator 2026
Check likely payday dates and see how weekends or bank holidays may affect them.
UK Maternity Leave Calculator
Work out maternity leave dates from an expected week of childbirth and planned leave start.
Personal dates
UK Age Calculator
Calculate your exact age in years, months and days and see your next birthday.