Accurate dates without manual counting
Stop counting days,
let the tools do it.
Compare dates, count business days, calculate future dates, and convert timestamps and world time zones.
DATE & TIME WORKBENCH
Date & Time Toolkit
Date DifferenceBusiness DaysAdd or Subtract DatesTimestampTime Zone Converter
01
How far apart are two dates?
Useful for project timelines, countdowns, ages, and anniversaries.
02
Add or Subtract Dates
Move forward or backward from any date.
Use a negative number to go backward, such as −7 days.
Result----Waiting for input
04
World Time Zone Converter
Enter local time in one place and see the time somewhere else.
Source Time ZoneUTC
--:--
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→
Time difference --
Same day
Target Time ZoneUTC
--:--
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i Daylight saving time is applied for the selected date. Local times skipped during DST transitions cannot be converted.
Handles leap years, month ends, and year boundaries without overflow.
Excludes Saturdays and Sundays for quick schedule estimates.
Offsets follow the selected date, so you do not need to remember DST schedules.
All dates, timestamps, and time zones are calculated only in this browser.
Calculate dates, timestamps, and world time
Find the exact calendar gap between two dates, count weekdays, or move forward and backward by days, weeks, months, or years. Convert Unix seconds or milliseconds into readable local and ISO times.
The time zone converter uses the selected date when applying daylight saving offsets, including half-hour time zones and date changes across midnight.