Date & Time Calculators
Count the days, work out an exact age, or find a half birthday — quick date tools that handle months of different lengths and leap years for you.
Mail Delivery Time Calculator New
Age Calculator New
Days Between Dates Calculator New
Half Birthday Calculator New
Business Days Calculator New
Countdown Calculator New
Dates made simple
Date arithmetic trips people up because months vary in length and leap years add a day every four years. Our date and time calculators take two dates — or a single date of birth — and return the answer instantly, whether you need an exact age, a countdown, or the number of days between two points on the calendar. Everything runs in your browser, so your dates stay private.
Frequently asked questions
Do these tools handle leap years?
Yes. Every calculation uses real calendar dates, so 29 February and leap years are counted automatically.
Are my dates saved?
No. Calculations happen entirely in your browser and nothing you enter is sent to us or stored.