Check how many days and hours remain until a date and time you choose.
Enter your values to see the result.
The calculation uses the date, time, and timezone of the browser where the check is opened. Shared links keep the entered target values.
Remaining time = entered local target date/time − current browser date/time. Days and hours are derived from the remaining milliseconds.
Calculate exact age in years, months, and days from a date of birth.
Open calculator Calculator Business Days CalculatorCount business days between two dates, excluding weekends.
Open calculator Calculator Countdown CalculatorCalculate how many days are left until a future date.
Open calculator Calculator Date Add / Subtract CalculatorAdd or subtract years, months, weeks, and days from a date.
Open calculatorCommon time-unit relationships and practical notes for date/time calculations.
Explore Converters Unix Timestamp ConverterConvert Unix timestamps to readable UTC/local dates and convert dates back to Unix time.
Explore Generators Date Sequence GeneratorGenerate recurring dates by days, weeks, months, or years.
Explore Generators Time Slot GeneratorGenerate evenly spaced time slots between a start and end time.
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