Date Calculator Add or subtract days, months, or years to or from a specific date.

The Date Calculator adds or subtracts days, weeks, months and years from a given date.

Date Calculator API Find a specific business date and calculate the working days in a given period.

Tools Years with Same Calendar as 2025 Customization Forms Customize this calendar–large – advanced form with more choices Customize this calendar – classic, basic form Change your …

World time and date for cities in all time zones. International time right now. Takes into account all DST clock changes.

Time and Date Duration – Calculate duration, with both date and time included Date Calculator – Add or subtract days, months, years Birthday Calculator – Find when you are 1 billion seconds …

Find the exact time difference with the Time Zone Converter – Time Difference Calculator which converts the time difference between places and time zones all over the world.

Help and Example Use Some typical uses for the Date Calculators Date Calculators Duration Between Two Dates – Calculates number of days Date Calculator – Add or subtract days, …

Add or subtract any number of days to/from a date, taking into account public holidays in your country and weekends.

Explore our calculator & converter tools for date, time, astronomy, and more. Calculate years, months, or even seconds, or count the days to your deadline.