Date and time calculators
Ages, dates, days between dates, day of the week, hours worked, time cards and time zones, all worked out exactly.
Week number calculatorISO 8601 and US week numbers for a date, and the dates in any week.Weekday counterHow many Mondays (or any weekday) between two dates, in a month or a year.Century calculatorThe century and millennium for any year, AD or BC.Fiscal year calculatorFiscal year and quarter for a date: federal, state, UK or your own start.Age difference calculatorExact age gap between two people, who's older, and the half-plus-seven rule.Date format converterConvert between ISO 8601, US, European, long form and Unix timestamps.Age calculatorExact age in years, months and days, plus the next birthday.Date calculatorAdd or subtract days, weeks, months, years or business days.Days between datesDays, weeks, months and business days between two dates.Day of the week calculatorWhat day of the week any date falls on, with the method.Hours calculatorHours and minutes between two times, minus a break.Time card calculatorWeekly timesheet with daily totals, overtime and gross pay.Time calculatorAdd and subtract days, hours, minutes and seconds, and convert units.Time zone converterConvert a time between any time zones, with daylight saving.