Universal Tools Directory
Explore our suite of professional calculators for finance, health, and more.
Date & Time
Date Duration
Count calendar days, weeks, months, and years between two dates. Choose whether to include the end date and compare the date-duration breakdown.
Age Calculator
Calculate age from a date of birth to today or a chosen date. See years, months, days, total days, and the next birthday countdown.
Time Calculator
Find the duration between clock times or add and subtract hours and minutes. Compare start and end times, including a modeled crossing of midnight.
Date Calculator
Add or subtract days, weeks, months, and years from a calendar date. Find a future or past date using the interval you choose.
Day of the Week Calculator
Find the weekday for a chosen date, including a birthday or future event. See additional date details such as day of year and leap-year status.