Estimate, not a legal decision
Use the result as decision support and planning help. For high-stakes choices, confirm the details with the relevant authority, lender, employer, or adviser.
Tools
Date Difference Calculator – Count Days
Count calendar days, full weeks, weekdays, and weekend days between two dates, with an option to include the end date.
Date difference
The period shown as days, weeks, and types of weekdays.
- Days between dates
- 0
- Full weeks
- 0
- Days beyond full weeks
- 0
- Weekdays Monday–Friday
- 0
- Saturdays and Sundays
- 0
Excludes the end date by default, or includes both dates when selected.
Details
Number of complete seven-day periods.
Days left after the full weeks.
Weekdays without subtracting public holidays.
Weekend days, not all public holidays.
Analysis & guidance
Calculate age
The age calculator counts completed years and days until the next birthday.
Convert shorter time
Use the time converter for hours, minutes, and seconds.
Compare periods
The percentage calculator compares one period with another relatively.
Common date questions
How many days are between two dates?
Choose both dates. The default is the number of complete calendar days from the earlier date up to the later one.
When should I include the end date?
Include it when both boundary dates represent counted days. Leave it off for a pure date difference.
Are public holidays removed from weekdays?
No. Weekdays here means Monday through Friday. Check the relevant calendar or agreement for actual working days.
Does daylight saving time affect the result?
No. The calculation uses calendar dates without times of day.
Should the end date count?
There is one day between 1 and 2 January. If both dates are days in the period, include the end date and the result becomes two.
Weekdays are not always working days
The calculator counts Monday to Friday. Public holidays, leave, and individual work schedules are not removed.
Date order does not change the total
If the end comes first, the calculator reverses the period and tells you. The displayed totals stay positive.
Count days between two dates
Choose a start and end date. The calculator uses complete calendar days without times, so daylight saving changes and time zones do not alter the result. If the later date is entered first, the period is automatically reversed and shown as a positive duration.
Date difference versus an inclusive period
From 1 January to 2 January, the date difference is one day. If both dates represent counted days—for example, two booked calendar dates—turn on “Include the end date” and the result becomes two. The same choice also affects the weekday and weekend totals.
Full weeks show how many complete seven-day periods fit in the range. Remaining days are what is left after those weeks. A result of 17 days can therefore also be read as 2 full weeks and 3 days.
Weekdays are not always working days
The weekday result counts Monday through Friday. It does not remove national or local public holidays, annual leave, shift patterns, or contractual days off. For actual working days, compare the selected range with the relevant calendar and employment rules.
Practical uses and caveats
This date calculator is useful for trips, delivery estimates, projects, notice periods, and countdowns. For a contract or official deadline, always verify how its rule defines the first day, last day, and holidays. The tool provides a mathematical calendar interval, not a legal determination.
How to read this calculator
These results are meant as guidance. They are based on rules, assumptions, and simplified models that can differ from your exact real-world situation.
Methodology
Each calculator uses defined inputs, assumptions, and logic. We explain the broader approach on the methodology page.
Read methodologySources and updates
Important calculators should be traceable back to official rules, public guidance, or other clearly stated references.
Read about sourcesCommon date questions
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