Date & Time Calculators
Age, date difference, and time calculators for everyday planning and scheduling.
Our date and time calculators help with everyday planning — from finding your exact age to calculating days between dates and performing time arithmetic. These tools handle leap years, varying month lengths, business day exclusions, and 12/24-hour time formats automatically. Useful for project deadlines, event planning, age verification, and timesheet calculations.
Frequently Asked Questions
Does the age calculator account for leap years?
Yes. The age calculator correctly handles leap years (Feb 29) when computing exact age in years, months, and days. For people born on Feb 29, it calculates age based on whether the current year is a leap year.
What counts as a business day?
In our date calculator, business days exclude Saturdays and Sundays. Public holidays are not excluded as they vary by country and region. For precise business day counts with holidays, manually subtract your applicable holidays from the result.
Can I calculate time across midnight?
Yes. The time calculator handles calculations that cross midnight correctly. For example, time from 10:30 PM to 2:15 AM properly calculates as 3 hours 45 minutes, not a negative value.