Date Calculator
Calculate the number of days between two dates or add/subtract a certain number of days to/from any date using this simple tool.
1. Calculate Difference Between Two Dates
2. Add or Subtract from a Date
Other Calculators in This Category
What is a Date Difference Calculator?
A date difference calculator is a powerful and simple tool used to calculate the number of days, weeks, months, or even years between two specific dates. This is useful in scenarios like project planning, age calculation, retirement planning, pregnancy due dates, or tracking the number of days left for a deadline.
How to Use the Date Difference Tool
To use this free online date duration calculator, just enter the start and end dates. You can optionally include the end date in your calculation. Our calculator will provide results in the following formats:
- Total number of days
- Years, Months and Days format
- Months and Days format
- Weeks and Days
- Hours
- Minutes
- Seconds
Add or Subtract Days from a Date
The calculator also works as a date add/subtract tool. You can choose a base date and add or subtract any number of years, months, weeks, or days. This is ideal for calculating future or past events like anniversaries, project timelines, or event planning.
Benefits of Using This Online Tool
This online date calculator is user-friendly and fast. It uses real calendar logic, taking into account leap years and variable month lengths, making it perfect for:
- Age calculator for calculating age from birth date
- Finding days left until a future date
- Calculating how long ago something happened
- Project start/end tracking