Date Calculator
Find the exact number of days between two dates, or add/subtract days to calculate a future or past date. Handles leap years correctly.
Add days, subtract days or count days between dates
Use this date calculator for form deadlines, exam dates, office work, service timelines, working days and document follow-up dates.
Date after adding days
5 September 2026
30 days after 6 August 2026 is 5 September 2026.
Start date
6 August 2026
Weekday: Thursday
Result date
5 September 2026
Weekday: Saturday
Days used
30
Added to start date.
Weeks view
4 weeks 2 days
Same duration in weeks and days.
Hours / minutes
720 hrs / 43,200 min
Useful for deadline-style counting.
Useful for forms
Find last dates, cut-off windows and submission deadline dates.
Working day count
Exclude Sundays or weekends for shop, office and service timelines.
Quick result actions
Copy, share or print the date result for customer and document work.
What this tool does
Enter two dates to find the difference in days, weeks, and months. Or enter a start date and a number of days to find the resulting date. Useful for calculating project deadlines, notice periods, loan durations, and any time-sensitive event.
When to use it
Use this for project planning, legal deadlines, EMI tenure end dates, subscription renewals, salary notice periods, event countdowns, and any situation where knowing the exact number of days matters.
Frequently Asked Questions
What can I calculate with this date calculator?
You can find the number of days, weeks, and months between two dates, add or subtract days from a date to find a future or past date, and check what day of the week a specific date falls on.
Does it account for leap years?
Yes. The calculator handles leap years correctly, so 29 February dates are included in calculations without error.
Can I use this to calculate a deadline or due date?
Yes. Enter a start date and add the number of days required to find the exact deadline or due date. Useful for project timelines, legal notice periods, loan tenures, and delivery estimates.
Is this calculator useful for legal and business purposes?
Yes. Lawyers, accountants, project managers, and HR professionals commonly use date calculators to verify notice periods, contract durations, probation end dates, and regulatory deadlines.