Dates & Time
Date calculators: your age, the days between two dates, and adding or subtracting days from a date.
This hub collects the date tools. Find your exact age, count the days between two dates, or move a date forward or backward by a number of days.
All the date math runs in your browser using your device’s current date, and leap years are handled automatically.
Calculators Age Calculator Calculate your exact age in years, months, and days from your date of birth, using today's date. Calculators Days Between Dates Calculator Count the number of days between two dates, shown as days and as weeks plus days. Calculators Date Calculator Add or subtract days from a date to find the resulting date and weekday.
Frequently asked questions
How do you calculate your age?
Count the whole years from your birth date to today, then the leftover months and days. The age calculator also shows the total days.
How do you count the days between two dates?
Subtract the earlier date from the later one. The days-between calculator gives the result as days and as weeks plus days.
How do you add or subtract days from a date?
Use the date calculator: pick a start date, choose add or subtract, and enter the number of days to get the resulting date and weekday.