Date Calculator – Add or Subtract Days, Months, Years

Calculate dates by adding or subtracting days, weeks, months, or years. Find the difference between dates, determine future or past dates, and plan events with our comprehensive date calculator.

Date Calculator – Add or Subtract Days, Months, Years

Calculate dates by adding or subtracting days, weeks, months, or years. Find the difference between dates, determine future or past dates, and plan events with our comprehensive date calculator.

Enter the starting date

Choose to add or subtract time

Number of time units to add or subtract

Unit of time to add or subtract

365
Days Between
📅
1
Years
🗓️
12
Months
📊
52
Weeks
⏰
365
Days
8,760
Hours
525,600
Minutes

Date Calculations Made Simple

Date calculations are essential for planning events, calculating deadlines, determining ages, and managing schedules. Our calculator handles complex date arithmetic including leap years and varying month lengths.

How to Use This Calculator

Follow these simple steps to get accurate results:

  1. Enter your start date
  2. Enter your operation
  3. Enter your amount
  4. Enter your time unit
  5. Click the "Calculate" button to see your results
  6. Review the detailed breakdown and explanation

Why Use Our Date Calculator – Add or Subtract Days, Months, Years?

  • 100% free and no registration required
  • Instant, accurate calculations with professional formulas
  • Mobile-friendly design that works on any device
  • Privacy-focused - your data never leaves your browser
  • Educational content to help you understand the results

Frequently Asked Questions

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