Time Between Dates Calculator
Calculate the exact time between any two dates with our comprehensive UK date calculator. Find days, weeks, months, and years - with options for working days excluding UK bank holidays.
Calculate Time Between Two Dates
Calculate Working Days (Excluding Weekends & Bank Holidays)
Add or Subtract Days from a Date
Calculate Precise Time Including Hours & Minutes
UK Bank Holidays 2025
Our working days calculator automatically accounts for these UK bank holidays:
| Holiday | Date | Day |
|---|---|---|
| New Year's Day | 1 January 2025 | Wednesday |
| Good Friday | 18 April 2025 | Friday |
| Easter Monday | 21 April 2025 | Monday |
| Early May Bank Holiday | 5 May 2025 | Monday |
| Spring Bank Holiday | 26 May 2025 | Monday |
| Summer Bank Holiday | 25 August 2025 | Monday |
| Christmas Day | 25 February 2026 | Thursday |
| Boxing Day | 26 February 2026 | Friday |
Note: Scotland and Northern Ireland have additional bank holidays. Select your region for accurate calculations.
Tips for Date Calculations
- Age calculations: Enter birth date as "From" and today as "To" for exact age in years, months, and days
- Project deadlines: Use the Add Days feature with "Working Days" to account for weekends and holidays
- Notice periods: UK employment notice periods are typically in weeks (1-12 weeks) - use our calculator to find the exact end date
- Rental agreements: Calculate exact tenancy durations for deposits, renewals, or break clauses
- Pregnancy due dates: Add 280 days (40 weeks) from the first day of your last menstrual period
- Visa expiry: Track exactly how many days remain before your UK visa expires
- Tax year: UK tax year runs 6 April to 5 April - calculate your tax year periods accurately
Common Date Calculation Mistakes
- Date format confusion: UK uses DD/MM/YYYY, not MM/DD/YYYY - 5/3/2025 means 5th March in UK!
- Forgetting bank holidays: A "30 working days" deadline excludes 8+ bank holidays per year
- Including vs excluding end date: "From Monday to Friday" is 4 or 5 days depending on interpretation
- Leap years: February 2024 had 29 days - always verify when spanning February dates
- Regional differences: Scotland has different bank holidays (2nd January, St Andrew's Day)
- Notice period starts: Employment notice typically starts the day after it's given, not the same day
- Weekend adjustments: If a bank holiday falls on a weekend, the substitute day is usually the following Monday
How Date Calculations Work
Calendar Days
Calendar days count every single day between two dates, including weekends. The formula is simply:
Working Days (Business Days)
Working days exclude weekends and optionally bank holidays. The calculation:
Years, Months, and Days Breakdown
To get an exact breakdown, we:
- Calculate full years between dates
- Calculate remaining full months
- Calculate remaining days
This handles varying month lengths (28-31 days) and leap years correctly.
UK Working Days Per Year
A typical UK working year:
- 365 days per year (366 in leap years)
- Minus ~104 weekend days (52 weeks × 2 days)
- Minus 8 bank holidays (England & Wales)
- = ~252-253 working days
Important UK Date-Based Deadlines and Periods
Many legal and financial processes in the UK are governed by strict date-based deadlines. Understanding how to calculate these correctly can help you avoid penalties and missed opportunities.
HMRC Tax Deadlines
The UK tax year runs from 6 April to 5 April the following year. Self Assessment tax returns must be filed by 31 October for paper returns or 31 January for online submissions. If you miss the 31 January deadline, HMRC applies an automatic £100 penalty, rising to £10 per day after three months.
Payment of any tax owed is also due by 31 January, with interest charged on late payments at the Bank of England base rate plus 2.5%. Use our calculator to count exactly how many days remain until your filing deadline.
Employment Notice Periods
UK statutory notice periods depend on length of service. Employees with one month to two years of service must give at least one week's notice. After two years, the minimum increases by one week for each complete year of employment, up to a maximum of 12 weeks.
Contractual notice periods may be longer. Notice typically begins the day after it is given, so if you resign on a Monday, your notice period starts on Tuesday. Our working days calculator helps you determine your precise leaving date while accounting for weekends and bank holidays.
Property and Tenancy Timeframes
Assured Shorthold Tenancies in England typically require two months' notice under a Section 21 eviction (though reforms under the Renters' Reform Bill may change this). Section 8 notices vary from two weeks to two months depending on the grounds cited. Mortgage offers are usually valid for three to six months from the date of issue.
Exchange of contracts to completion typically takes 7 to 28 calendar days, with 14 days being the most common timeframe. Calculating these periods accurately is essential to avoid costly delays in property transactions.
Cooling-Off Periods
UK consumer law provides several important cooling-off periods. Online and distance purchases carry a 14-day cancellation right from the date of delivery. Insurance policies purchased online or by phone have a 14-day cooling-off period.
Timeshare agreements come with a 14-day withdrawal period under EU-inherited regulations. Doorstep sales contracts allow a 14-day cancellation window. Being aware of these timeframes and calculating them correctly can help protect your consumer rights.
How the Time Between Dates Calculator Works
This calculator handles date and time computations using the standard Gregorian calendar. Date calculations must account for varying month lengths (28-31 days), leap years (every 4 years, except centuries not divisible by 400), and UK-specific considerations like bank holidays and working day calculations.
In the UK, date formats follow the day/month/year convention (DD/MM/YYYY), which differs from the American month/day/year format. This tool uses the UK format throughout to avoid confusion.
Key Information
The UK has 8 permanent bank holidays in England and Wales (9 in Scotland, 10 in Northern Ireland). A standard UK working year is typically 252 days (365 minus 104 weekend days minus 8 bank holidays, plus 1 day adjustment). The minimum statutory annual leave entitlement is 28 days (5.6 weeks) for full-time employees, which can include bank holidays at the employer's discretion.
Example Calculation
Calculating working days between 1 January 2026 and 31 March 2026: there are 90 calendar days, minus 26 weekend days and 2 bank holidays (New Year's Day and Good Friday), giving 62 working days. This is useful for project planning, notice periods, and leave calculations.
Source: Based on UK calendar and bank holiday data. Last updated March 2026.
Frequently Asked Questions
Enter your start date and end date in our Date Difference calculator. It will instantly show the total days, weeks, months, and years between the dates, including a breakdown of exact years, months, and days. You can also choose whether to include the end date in the count.
Yes! Our Working Days mode excludes all UK bank holidays. We support different regions:
- England & Wales: 8 bank holidays (New Year's, Good Friday, Easter Monday, May Day, Spring, Summer, Christmas, Boxing Day)
- Scotland: Includes 2nd January and St Andrew's Day (30 November)
- Northern Ireland: Includes St Patrick's Day (17 March) and Battle of the Boyne (12 July)
Calendar days include every day - Monday through Sunday. There are 365 calendar days in a year (366 in leap years).
Working days (also called business days) typically exclude weekends and public holidays. In the UK, this is usually Monday to Friday, minus the 8 standard bank holidays. There are approximately 252 working days in a UK year.
Use our "Add/Subtract Days" mode:
- Enter your starting date
- Select "Add" for future dates or "Subtract" for past dates
- Enter the number of days
- Choose "Calendar Days" or "Working Days"
- Click Calculate to see your deadline date
For business deadlines (e.g., "respond within 10 working days"), select "Working Days" to automatically skip weekends and bank holidays.
A typical UK year has approximately 252 working days:
- 365 total days (or 366 in a leap year)
- Minus 104 weekend days (52 Saturdays + 52 Sundays)
- Minus 8 bank holidays (for England & Wales)
- = 253 working days (or 252 depending on how bank holidays fall)
Scotland and Northern Ireland have 9-10 bank holidays, so slightly fewer working days.
The UK uses DD/MM/YYYY format (day/month/year). Examples:
- 25th February 2026 → 25/12/2025
- 5th March 2025 → 05/03/2025
- 1st January 2025 → 01/01/2025
This differs from the US format (MM/DD/YYYY). Be careful when reading dates: 03/05/2025 means 3rd May in the UK but 5th March in the US!
To calculate exact age:
- Go to "Date Difference" mode
- Enter the birth date as "From Date"
- Enter today's date as "To Date" (or use the "Today" quick button)
- Click Calculate
You'll see the exact age in years, months, and days, plus total days lived. This is useful for official documents, milestone celebrations, or age-restricted services.
Yes! Use our "Precise Time" mode to enter both dates with times. This calculates the exact difference including:
- Years, months, and days
- Hours, minutes, and seconds
- Total hours and total minutes between the moments
This is useful for tracking time-sensitive events, flight durations, or precise age calculations.
Pro Tips for Accurate Results
- Double-check your input values before calculating
- Use the correct unit format (metric or imperial)
- For complex calculations, break them into smaller steps
- Bookmark this page for quick future access
Understanding Your Results
Our Time Between Dates Calculator provides:
- Instant calculations - Results appear immediately
- Accurate formulas - Based on official UK standards
- Clear explanations - Understand how results are derived
- 2025/26 updated - Using current rates and regulations
Common Questions
Is this calculator free?
Yes, all our calculators are 100% free to use with no registration required.
Are the results accurate?
Our calculators use verified formulas and are regularly updated for accuracy.
Can I use this on mobile?
Yes, all calculators are fully responsive and work on any device.