Date & Time Calculators

Calculate exact ages, count working days, convert time zones, and track countdowns — all in one place.

Calculate exact age in years, months, and days from any birth date to any reference date.

Find the exact number of calendar days between any two dates, with inclusive or exclusive counting.

Count working days between two dates, excluding weekends and public holidays.

Convert any time between world time zones, with automatic daylight saving time adjustments.

Create a live countdown to any future date, event, or deadline in days, hours, and minutes.

Plain-language answers to common questions about ages, business days, time zones, and countdowns.

Step-by-step guides for calculating ages, counting working days, and converting time zones.