Date & Age Calculators

10 Tools

Free, accurate, and instant online tools and calculators for date & age calculators. Run directly in your browser with zero configuration.

Age Calculator

Calculate your exact age in years, months, days, hours, and minutes from your date of birth. Find out how many days until your next birthday.

Find the exact age difference between two people or two dates. Displays the gap in years, months, and days.

Calculate the number of days, weeks, months, and years between any two dates. Useful for project timelines and event planning.

Add or subtract days, weeks, months, or years from any date to find a past or future date quickly.

Find out exactly how many days remain until any upcoming event, holiday, or deadline.

Discover what day of the week you were born, your birth number, next birthday countdown, and upcoming birthdays for any date.

Quickly check whether any given year is a leap year and find the nearest past and future leap years.

Calculate the number of business (working) days between two dates, excluding weekends and optional public holidays.

Add or subtract time values and calculate the total duration between two time points in hours, minutes, and seconds.

Convert Unix timestamps to human-readable dates and vice versa. Supports millisecond and second precision.