Diferencia de Fechas
Calcula duración entre dos fechas
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Install the DailyDevTools extension — access all tools from your browser toolbar
What is Date Difference?
Calculating the exact number of days, weeks, months, or years between two dates is tricky because months have different lengths and leap years add complexity. DailyDevTools' Date Difference Calculator handles all this automatically — enter any two dates and instantly get the difference in days, weeks, months, years, hours, and minutes. Useful for project planning, deadline tracking, and age calculations.
How to use Date Difference
- 1Select the start date and end date using the date pickers
- 2The difference is calculated instantly in days, weeks, months, and years
- 3Toggle 'Exclude weekends' to count only business days between the two dates
- 4Click Swap Dates to reverse the calculation direction
Frequently asked questions
How are months calculated when months have different lengths?
Month differences count complete calendar months. From January 31 to March 31 is 2 months exactly. From January 31 to March 28 is 1 month and 28 days, not quite 2 months.
Can I calculate business days excluding weekends and holidays?
Yes. Toggle 'Exclude weekends' to count only Monday–Friday. Custom holiday exclusion can be added by entering specific holiday dates to skip in the advanced options.
What is the maximum date range the calculator supports?
The calculator handles any date range supported by JavaScript's Date object — from the year 100 to year 275,760. For historical dates before 1582, note that the Gregorian calendar was not yet in effect.
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