Time & Date Calculators
Calculate ages, dates, durations, and countdowns with free, instant time & date calculators — from birthdays to business days.
Most Popular Time & Date Tools
Age Calculator
The most searched time tool — find your exact age in years, months, and days.
Calculate Now →Days Between Dates
Find the exact number of days, weeks, and months between two dates.
Calculate Now →Countdown Calculator
Live countdown to any future date and time, down to the second.
Calculate Now →How It Works
Choose a Calculator
Pick the time or date tool that matches what you want to find out.
Enter Your Details
Fill in dates, times, or durations — whatever the calculator needs.
Get Instant Results
See your results immediately, with clear breakdowns and next steps.
All Time & Date Calculators
Age Calculator
Find your exact age in years, months, and days.
Calculate Now →Date Calculator
Add or subtract days, weeks, months, or years from any date.
Calculate Now →Time Calculator
Add/subtract hours and minutes, or find duration between times.
Calculate Now →Days Between Dates
Find the exact number of days, weeks, and months between two dates.
Calculate Now →Business Days Calculator
Count working days between dates, excluding weekends.
Calculate Now →Countdown Calculator
Live countdown to any future date and time.
Calculate Now →Birthday Calculator
See your zodiac sign, birth weekday, and next birthday countdown.
Calculate Now →Week Number Calculator
Find the ISO week number for any date.
Calculate Now →Why Use Time & Date Calculators?
Working out exact ages, deadlines, working days, or countdowns by hand is easy to get wrong — calendars have uneven months, leap years, and weekends to account for. Our free time & date calculators handle all of that automatically, giving you instant, accurate results whether you're planning a project, tracking a birthday, or counting down to an important event.
Pro Tip: Every calculator on this page correctly accounts for leap years, varying month lengths, and the base-60 system used for time calculations — so you can trust the results every time.
Frequently Asked Questions
Yes, all calculators on this page are completely free with no sign-up required.
Each calculator uses precise calendar logic, correctly accounting for leap years, varying month lengths, and weekends where relevant.
Yes, every calculator is fully responsive and works smoothly on phones, tablets, and desktops.
No account or sign-up is needed — just open a calculator and start using it right away.