Add or Subtract Time from Any Date

Use our free Time Adder and Subtractor tool to quickly calculate a new date and time by adding or subtracting days, weeks, months, or years from any starting point. Perfect for planning events, deadlines, or understanding time gaps.

🔧 How It Works

  1. Choose Operation: Add or Subtract time from a starting date.
  2. Set Start Date & Time: Use the date/time picker or quick presets like Now, Morning (9AM), Afternoon (3PM), etc.
  3. Enter Duration: Input the number of days, weeks, months, or years.
  4. Enable Repeat (Optional): Repeat the same calculation multiple times (e.g., every 7 days).
  5. Toggle “Include Time”: Uncheck to perform date-only calculations.

✅ Example Use Cases

  • Plan recurring meetings or project phases
  • Schedule reminders before an event
  • Estimate shipping or delivery timelines
  • Backtrack past events using exact time data

🧠 Tips for Accuracy

  • Use presets for common times like 9AM or 3PM
  • Enable “Repeat” for recurring schedules
  • Double-check AM/PM and selected time zone

🙋 Frequently Asked Questions

  • Can I subtract time instead of adding it?
    Yes. Just select "Subtract" and enter your duration.
  • What’s the “Repeat” feature for?
    It applies the same addition/subtraction repeatedly — perfect for generating future schedules.
  • What if I don’t care about the time?
    Uncheck “Include Time” to switch to a date-only calculator.
  • Do I need to fill all fields?
    No — just enter the time units you want (e.g., only days or months).