Tool category

Date & Time

Calculate, compare, convert and format dates, times, calendars and IANA time zones locally.

15 tools available in this category

Calculate exact age, total elapsed time, next birthday and birth weekday.

Calculate elapsed days, weeks, approximate months and exact calendar difference.

Count working and calendar days with optional weekends and holiday exclusions.

Compare two dates with exact, elapsed and remaining time results.

Add or subtract years, months, weeks, days, hours and minutes from a date.

Track the days, hours, minutes and seconds remaining until a future date.

Calculate elapsed hours and minutes between times, including midnight crossings.

Convert local date and time between IANA zones with browser DST rules.

Convert seconds, milliseconds and UTC dates in both directions.

Find the ISO week, day of year, quarter and remaining ISO weeks.

Check Gregorian leap-year rules and the number of days in a year.

Find simple calendar week, ISO week and day of year for any date.

Convert a UTC date to ISO, RFC 2822, Unix and common numeric formats.

Add or subtract hours, minutes and seconds with 24-hour wrapping.

Generate and print a localized monthly calendar for any supported year.