Unix timestamp converter
Convert Unix seconds or milliseconds and ISO 8601 instants.
Open tool2541.CN / Tools
All tools
Practical tools for everyday work. Convert, create, calculate, and keep things moving.
12 Results
Date difference calculator
Calculate the signed number of days between calendar dates.
Open toolAdd or subtract dates
Add calendar months and days, clamping month-end dates when needed.
Open toolBusiness day counter
Count weekdays between two dates, excluding an optional holiday list.
Open toolAge calculator
Calculate completed years, months and days between two dates.
Open toolLeap year checker
Check a Gregorian year and its February length.
Open toolISO week number
Find the ISO week-year, week number and weekday.
Open toolTime zone converter
Show the same instant in several IANA time zones.
Open toolMonthly calendar
Generate a Monday-first calendar for a Gregorian month.
Open toolAdd time durations
Add hours:minutes:seconds durations, including durations longer than a day.
Open toolTimecode ↔ frames
Convert non-drop-frame timecode and frame counts at integer frame rates.
Open toolLocalized date formatter
Format an ISO instant in a chosen locale and time zone.
Open toolNo matching tools. Try a shorter keyword.