Time & Date calculators

Ages, date differences, durations and working days.

Date Calculations

Days between dates, and dates before or after another.

Date CalculatorCount the days, weeks and weekdays between two dates, or add and subtract days, weeks, months and years.Open Countdown CalculatorA live countdown in days, hours, minutes and seconds to any date and time, with weeks and weekdays to go.Open

Time Calculations

Durations between times of day.

Time Duration CalculatorThe time between two dates and times, a time plus or minus a duration, or the total of a list of durations.Open

Age & Birthday

Exact ages and the time until a birthday.

Age CalculatorExact age in years, months and days, with totals in months, weeks and days and the next birthday.Open

Work Time

Business days and working periods.

Business Days CalculatorCount working days between dates or find a date N business days away, with your own weekend and holidays.Open

Time Zones

Converting times between places.

Time Zone CalculatorConvert a date and time between any two time zones, with daylight saving time and the difference between them.Open