Date Difference

Find duration between two dates

Start Date

End Date

Add/Subtract Days

Find a date that is N days from a start

From Date

Days to Add (+) or Subtract (−)

Result Date

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Results

Total Days Between Dates

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Total Weeks

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Total Months

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Total Years

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Working Days (est.)

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Weekends

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Exact Duration

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Day Breakdown

Duration in Units

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Select two dates to calculate the difference

About

Date Calculation Tips

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Calendar Days vs Working Days

Calendar days include weekends and holidays. Working days (business days) typically exclude Saturdays, Sundays, and public holidays. This calculator estimates working days by excluding weekends only — subtract public holidays manually for precise project timelines.

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Project Planning

Use date addition/subtraction to find deadlines. Add 90 calendar days for a quarterly timeline. For Sprint planning, add 14 days per sprint. For contract milestones, subtract days from the deadline to set interim checkpoints.

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Legal Timelines

Legal deadlines often use "calendar days" (including weekends) or "business days" (excluding weekends/holidays) depending on jurisdiction. Always clarify which type is applicable for legal notices, statute of limitations, and contract provisions.

FAQ

Frequently Asked Questions

Common questions about EMI calculations

How are working days calculated?

Working days = Total days − Saturdays − Sundays. This calculator provides an estimate excluding only weekends. For exact working days, you also need to subtract public holidays specific to your country/state. Working days typically run Monday through Friday in most countries.

What is the difference between calendar days and business days?

Calendar days count every day (Mon–Sun). Business/working days count only Mon–Fri. A 30-calendar-day period contains roughly 22 business days. Legal deadlines, payment terms, and project schedules often specify which type applies.

How do I calculate 30 days from today?

Use the "Add/Subtract Days" section. Set the From Date to today, enter 30 in the Days field, and click Calculate. The result shows the exact date 30 days from now, along with the day of the week. This is useful for calculating invoice due dates, subscription renewals, and deadlines.

Can I calculate duration across different years?

Yes — the calculator handles dates across years, decades, and centuries. It correctly accounts for leap years (February 29). For multi-year durations, the result shows total days, weeks, months, and the full years + months + days breakdown.

📆 Date Difference Calculator