Date & Time Calculator

Calculate differences between dates and times, add or subtract time periods, and plan your events with precision.

📅 Calculate Date Difference

Start Date End Date

Include

Include end date in calculation Show business days (exclude weekends)

⏰ Calculate Time Difference

Start Time End Time

Options

End time is next day

➕➖ Add or Subtract Time

Base Date & Time

Operation

Add Subtract

Years

Months

Days

Hours

Minutes

Seconds

📆 Event Planner

Event Date Event Time (Optional) Event Name

Reminder Settings

1 hour before 1 day before 1 week before

Your calculation results will appear here.

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📝 How to Use

• Date Difference: Calculate days, weeks, months, and years between two dates
• Time Difference: Find the duration between two times, including overnight calculations
• Add/Subtract Time: Add or remove years, months, days, hours, minutes from any date
• Event Planner: Count down to important events and set reminders