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Contract Date Calculator

📅Last updated: December 5, 2025
✓Reviewed by: LumoCalculator Team

Calculate contract end dates, duration, renewal dates, and notice deadlines. Never miss a deadline for lease, employment, service, or subscription agreements.

Contract Date Calculator

Calculate contract dates & deadlines

Calculation Results

✅ Active0% complete
Start Date
12/22/2025
End Date
12/22/2026
Total Duration
1 year, 5 days
Remaining
1 year, 5 days
Notice Deadline
11/22/2026
335 days until notice deadline
💡 Summary

Your contract starting on Monday, December 22, 2025 will end on Tuesday, December 22, 2026. The total contract duration is 1 year, 5 days.

Duration Breakdown

Total Days365
Total Weeks52
Total Months12
Total Years1

Key Dates

StartMonday, December 22, 2025
EndTuesday, December 22, 2026
Notice BySunday, November 22, 2026

Related Calculators

Common Contract Types

Contract TypeTypical DurationNotice Period
Employment1-3 years14-90 days
Lease/Rental6-12 months30-60 days
Service Agreement1-2 years30-90 days
Subscription1 month - 1 year7-30 days
NDA2-5 yearsN/A
Software License1-3 years30-60 days

Common Notice Periods

7 Days7 days
14 Days14 days
30 Days30 days
60 Days60 days
90 Days90 days

Contract Terms Explained

📅 Term/Duration

The length of time the contract is in effect. Can be fixed (12 months) or ongoing until terminated.

🔔 Notice Period

Time required to inform the other party before ending or not renewing. Missing it may trigger auto-renewal.

🔄 Auto-Renewal

Contract automatically extends for another term unless notice is given. Also called "evergreen" clauses.

📝 Termination

The formal ending of a contract. May be at the end of term, by notice, or for cause (breach).

Contract Management Best Practices

✓ Do
  • • Set calendar reminders before notice deadlines
  • • Keep a central contract tracking system
  • • Review terms before auto-renewal kicks in
  • • Send notice via certified mail/email
✗ Avoid
  • • Waiting until the last minute to review
  • • Assuming verbal notice is sufficient
  • • Forgetting about auto-renewal clauses
  • • Losing track of multiple contracts

Set These Reminders

📆 90 Days Before End

Start reviewing contract terms and decide on renewal

📆 Notice Period + 7 Days

Prepare and send formal notice if not renewing

📆 Notice Deadline

Last day to cancel - after this, you may be auto-renewed

⚖️ Legal Disclaimer

This calculator provides estimates based on the information you enter. Contract terms vary significantly, and specific clauses may affect dates and deadlines. Always read your actual contract carefully and consult with a legal professional for important contract decisions. This tool is for informational purposes only and does not constitute legal advice.

Frequently Asked Questions

How do I calculate a contract end date?
Enter the contract start date and the duration (in days, weeks, months, or years). The calculator will add the duration to the start date to give you the exact end date. For example, a 12-month contract starting January 15, 2025 ends on January 15, 2026.
What is a notice period?
A notice period is the amount of time you must give before terminating or not renewing a contract. For example, a 30-day notice period means you must inform the other party at least 30 days before the contract ends if you don't want to renew. Missing this deadline may result in automatic renewal.
What happens if I miss my notice deadline?
If your contract has an auto-renewal clause and you miss the notice deadline, the contract will typically renew automatically for another term (often the same length as the original). You'll be bound by the contract for another period. Always set reminders well before the notice deadline.
How do I calculate contract duration?
Use the "Duration" mode and enter both the start and end dates. The calculator will show you the exact duration in days, weeks, months, and years. This is useful when reviewing existing contracts or comparing different contract lengths.
What is a typical notice period for different contracts?
Notice periods vary by contract type: Employment contracts typically require 14-90 days, residential leases usually need 30-60 days, service agreements often require 30-90 days, and subscription services may need only 7-30 days. Always check your specific contract terms.
How do auto-renewal contracts work?
Auto-renewal (or evergreen) contracts automatically renew for another term unless one party gives notice before the deadline. For example, a 1-year contract with 60-day notice and auto-renewal will automatically extend for another year if you don't cancel at least 60 days before it ends.