เครื่องคิดเลขวันที่และเวลา

Calculate days, weeks, and months between two dates. Perfect for project planning and date range calculations.

Count business days between two dates excluding weekends. Essential for project timelines and deadline planning.

Add or subtract days from any date. Get the resulting date instantly. Useful for scheduling and date arithmetic.

Count down days, hours, and minutes to a target date. Perfect for events, deadlines, and milestone tracking.

Find what day of the week any date falls on. Get day of year. Useful for scheduling and calendar planning.

Check if any year is a leap year. Get days in February. Quick validation for calendar and date logic.