Date & Time Master Calculator

All-in-one date and time calculator. Calculate age, find days between dates, countdown to events, convert Unix timestamps, and track life milestones.

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What do you want to calculate?

Year (Start/Birth)

Month

How to Use This Calculator

Enter your birth date to calculate your current age and upcoming milestones.
Review the milestone list showing when you will reach ages 13, 18, 21, 25, 50, and other significant birthdays.
Check special day counts like 1,000 Days Old and 10,000 Days Old for fun milestones.

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Formula

Age = Date2 − Date1 | Days Between = (Date2 − Date1) / 86400000 | Unix = ms since 1970-01-01

Calculate your exact age in years, months, days, and more. Find out how many days until your next birthday.

Calculate the exact number of days, months, and years between two dates. Also shows weeks, hours, and minutes.

Calculate your exact age in days, weeks, months, years, hours, minutes, and seconds. Perfect for milestones and celebrations.

Count down to any date. See remaining days, hours, minutes, weeks, work days, and sleeps until your target date.

Convert between Unix timestamps and human-readable dates. Get the current Unix time or convert any date to a timestamp.

Calculate the date that is a given number of business days from a start date. Excludes weekends automatically.

Calculate daily, weekly, monthly, and annual work hours. Estimate pay based on your hourly rate, including overtime.

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