Calendar Duration Calculator: Date Difference in a Click


Duration
How to Use
  1. Select a calculation mode from the tabs.
  2. Fill in the required dates and options.
  3. Click "Calculate" to instantly see the result.
  4. Use the Reset button to clear everything and start over.
Key Features
  • Two distinct tools in one clean interface.
  • Precise duration and working day calculations.
  • Ability to add or subtract time from a date.
  • Detailed breakdown into various time units.
  • Sleek, responsive "Starlight & Nebula" theme.
Practical Applications
This toolkit is designed for real-world scenarios. Plan project timelines by calculating working days. Countdown to a vacation or event. Figure out contract end dates by adding 90 days. Or, look back to see how long ago an anniversary was. It’s a versatile tool for professional and personal planning.
FAQ
How does "Include End Day" work?
By default, Monday to Tuesday is one day. With this option, it's two days because it includes both dates in the count.
How are months calculated?
The main result uses calendar-aware math (knowing February is short). The secondary results grid uses an average for a quick reference.