Calculate, Compare & Convert Dates Instantly
Free online date tools that run directly in your browser. Fast, lightweight, mobile-friendly, and no account required.
Popular Calculators
Most frequently used date tools
Date Difference Calculator
Calculate the exact duration, total days, weeks, and months between two dates.
Add or Subtract Days from Date
Add or subtract days, weeks, months, or years from any starting date.
Exact Age Calculator
Calculate your exact age in years, months, days, and countdown to your next birthday.
Days From / Before Date Calculator
Find what date it was or will be X days from or before a reference date.
Event Countdown Timer
Create a live real-time countdown timer for birthdays, events, or deadlines.
All Date Utilities
Explore our full suite of web calculators
Date Difference Calculator
Calculate the exact duration, total days, weeks, and months between two dates.
Add or Subtract Days from Date
Add or subtract days, weeks, months, or years from any starting date.
Exact Age Calculator
Calculate your exact age in years, months, days, and countdown to your next birthday.
Days From / Before Date Calculator
Find what date it was or will be X days from or before a reference date.
Day of Week & Leap Year Calculator
Find out what day of the week a date falls on and check leap year status.
Event Countdown Timer
Create a live real-time countdown timer for birthdays, events, or deadlines.
Instant Browser Results
All calculations execute in real-time right inside your browser without round-trip server delays.
Privacy First
Your dates, birthdays, and event names stay on your device. We do not store or track any entered dates.
Mobile Optimized
Clean, responsive user interface built specifically for smartphone touchscreens with native date pickers.