Time and date calculators
Pick a calculator. Each shows the answer as you type, with the steps underneath.
Age calculatorExact age in years, months and days, plus total days and the next birthday.Open the calculator ›Date calculatorThe date after adding or subtracting years, months and days.Open the calculator ›Days between dates calculatorNumber of days, weeks and months between two dates.Open the calculator ›Time duration calculatorHours and minutes between two clock times, with an unpaid break.Open the calculator ›Time card calculatorTotal hours and gross pay from a list of shifts.Open the calculator ›Hours calculatorHours worked from clock in, clock out and break, for one day or several.Open the calculator ›Day of the week calculatorWhat weekday any date falls on, with day of year and ISO week.Open the calculator ›Week number calculatorISO week number of any date, with the week's Monday and Sunday.Open the calculator ›Days until calculatorHow many days, weeks and weekdays until any date.Open the calculator ›Business days calculatorWorking days between two dates, skipping weekends and holidays you count.Open the calculator ›Time zone converterConvert a date and time between 24 world time zones, daylight saving included.Open the calculator ›
Time and date calculators
Method: standard arithmetic shown step by step; no outside data is used. Checked 2026-11-12.
Written by Calculators Free Editorial Team · Data checked 2026-11-12
About · How we verify this · Editorial policy · Corrections
About · How we verify this · Editorial policy · Corrections
General information only. Results are plain arithmetic on the numbers you enter; check anything important (money, health, school work) against your own records or the official source.