Date Calculator
Add or subtract days, weeks, months, and years from any date. Calculate future dates, past dates, and the time between dates with our free date calculator tool.
When to Use a Date Calculator
From business planning to personal milestones, our date calculator helps you stay organized and on schedule
Project Management
Calculate project deadlines, milestone dates, and delivery schedules. Perfect for planning sprints, setting due dates, and tracking project timelines with business day accuracy.
Event Planning
Plan weddings, conferences, parties, and corporate events. Calculate booking deadlines, vendor payment schedules, RSVP dates, and countdown timelines for any special occasion.
Legal & Contracts
Track contract expiration dates, statute of limitations, filing deadlines, and legal notice periods. Essential for lawyers, paralegals, and anyone managing legal documents.
Healthcare & Pregnancy
Calculate due dates, appointment schedules, medication timelines, and treatment plans. Track pregnancy milestones, vaccination schedules, and follow-up visit dates.
Travel Planning
Plan vacation dates, calculate trip durations, track visa expiration dates, and schedule travel itineraries. Perfect for booking flights, hotels, and planning multi-destination trips.
Education & Training
Track semester dates, assignment deadlines, exam schedules, and course completion dates. Ideal for students, teachers, and training coordinators managing academic calendars.
Financial Planning
Calculate loan maturity dates, investment timelines, payment schedules, and financial goal deadlines. Track bill due dates, tax deadlines, and retirement planning milestones.
Real Estate
Track closing dates, inspection deadlines, lease expiration dates, and property management schedules. Essential for realtors, landlords, and property investors.
How to Use the Date Calculator
Simple step-by-step guide to calculating dates accurately
Adding or Subtracting Time
Select Your Starting Date
Choose the date you want to calculate from. You can use today's date or any date in the past or future.
Choose Add or Subtract
Select whether you want to add time to your date or subtract time from it.
Enter Time Values
Input the number of years, months, weeks, and days you want to add or subtract. You can use any combination.
Optional: Business Days Only
Check this option if you want to exclude weekends from your calculation. Perfect for work-related deadlines.
View Your Result
The calculator automatically displays your result date with the full day name, month, and year.
Finding Days Between Dates
Switch to Between Dates Mode
Click the "Days Between Dates" button at the top of the calculator to switch modes.
Enter Your Start Date
Select the first date in your date range. This is typically the earlier date.
Enter Your End Date
Select the second date in your date range. This is typically the later date.
View Multiple Results
The calculator automatically shows the difference in days, weeks, months, and years between your two dates.
Pro Tip
The calculator works in both directions - you can enter the later date first and the earlier date second, and it will still calculate the correct difference.
Tips for Accurate Date Calculations
Leap Years
Our calculator automatically accounts for leap years, so you don't need to worry about February 29th or varying month lengths.
Business Days
When calculating business days, the calculator excludes Saturdays and Sundays. For holiday exclusions, add those days manually.
Month Calculations
When adding months, the calculator maintains the same day of the month when possible. If the day doesn't exist (like Feb 31), it adjusts to the last valid day.
Combining Units
You can combine any time units in a single calculation. For example, add 1 year, 3 months, 2 weeks, and 5 days all at once.
Why Use Our Date Calculator?
Powerful features designed to make date calculations simple and accurate
Instant Results
Get immediate date calculations with real-time updates as you adjust values
Multiple Units
Add or subtract days, weeks, months, and years in any combination
Business Days
Calculate business days excluding weekends and holidays automatically
Mobile Friendly
Use on any device - desktop, tablet, or smartphone with full functionality
Frequently Asked Questions
Common questions about using our date calculator
How do I add days to a date?
Simply enter your starting date, select "Add" from the operation dropdown, enter the number of days you want to add, and click Calculate. The result will show you the new date instantly.
Can I calculate business days only?
Yes! Check the "Business Days Only" option to exclude weekends from your calculation. This is perfect for project deadlines, delivery dates, and business planning.
How do I find the number of days between two dates?
Switch to "Days Between Dates" mode, enter your start and end dates, and the calculator will show you the exact number of days, weeks, months, and years between them.
Can I add multiple time units at once?
Absolutely! You can add or subtract any combination of years, months, weeks, and days in a single calculation. For example, add 2 years, 3 months, and 15 days all at once.
Is this date calculator free to use?
Yes, our date calculator is completely free with no registration required. Use it as many times as you need for personal or business purposes.
Does the calculator account for leap years?
Yes, our calculator automatically accounts for leap years, varying month lengths, and all calendar irregularities to ensure accurate results every time.
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