Time & Date Calculators

Time calculations involve more complexity than they appear—leap years, varying month lengths, daylight saving transitions, and time zone differences all affect results. Our age calculator accounts for leap years and gives you exact years, months, and days down to the second. The date calculator handles business days, weekends, and can add or subtract any combination of years, months, weeks, and days from any date.

For work and payroll, the time card calculator computes regular hours, overtime (after 8 hours daily or 40 weekly), and break deductions. It exports to formats compatible with most payroll systems. The time zone converter uses the IANA Time Zone Database—the same standard used by operating systems and airlines worldwide—ensuring accuracy even during daylight saving transitions. All calculations follow ISO 8601 international date and time standards.