Dates & time

Exact age, days between dates, working days and holidays, hours worked, time zones, countdowns: get on top of time in seconds.

15 calculators
Age calculatorYour exact age in years, months and days, and how many days until your birthday.Open →
Days between datesCount the days, weeks and weekdays between two dates.Open →
Add days to a dateFind the date X days, weeks or months from a given date.Open →
Hours worked calculatorTime between a start and end time minus breaks, in hours and decimal hours.Open →
Time zone converterWhat time is it in New York, Tokyo or Montreal when it's 3 pm in London?Open →
Countdown calculatorHow many days until the holidays, Christmas, a birthday or an exam?Open →
Week number and weekdayThe ISO week number, weekday and day of the year for any date.Open →
Your age on other planetsHow old would you be on Mars, Jupiter or Mercury?Open →
Working days between dates (with holidays)The number of working days between two dates, excluding weekends and Belgian or French public holidays.Open →
Public holidays and Easter dateThe list of public holidays in Belgium or France for any year, with the day of the week.Open →
Add up hours and durationsAdd up durations (1h30, 2:45, 50 min…) for a timesheet or a video edit.Open →
Duration converter (decimal hours ↔ h:min)Convert seconds, minutes, hours, days and decimal hours (7.75 h = 7 h 45).Open →
Life milestones (10,000 days, 1 billion seconds)The dates of your 10,000th day, 500th month or 1 billionth second, and the weekday you were born.Open →
Moon phase calculatorThe Moon's phase and illumination on any date, with the next full and new moons.Open →
Weekly timesheetYour hours for the week day by day, minus breaks, and overtime beyond your contract.Open →