Date Tools

All-in-one date tools

Calculate exact date differences, age, weekdays, leap years, and future or past dates with cleaner design and more reliable calendar math.

Days Between Two Dates

See the total day gap and the exact calendar difference in years, months, and days.

Type M/D/YYYY like 3/12/2023 or use the calendar button.

Type M/D/YYYY like 3/12/2023 or use the calendar button.

Select two dates to see the exact difference.

Age Calculator

Find exact age, days lived, and the next birthday from a date of birth.

Type M/D/YYYY like 3/12/2023 or use the calendar button.

Add a birth date to see an exact age breakdown.

Day Finder

Check the weekday, ISO week number, and day-of-year details for any date.

Type M/D/YYYY like 3/12/2023 or use the calendar button.

Pick a date to explore its weekday and year position.

Add or Subtract

Move a date by days, weeks, months, or years without breaking calendar rules.

Type M/D/YYYY like 3/12/2023 or use the calendar button.

Choose a base date and amount to generate a new date.

Leap Year Check

Verify whether a year has 365 or 366 days and why it qualifies.

Enter a year to see if it is a leap year.