Date & Time Tools
Date, time, countdown, calendar, work-hour, timestamp, and scheduling tools for planning.
20 date & time tools
Each page includes a focused input form, result text, copy button, structured FAQ, and related tool links. Choose a tool below and enter your own values.
Age Calculator
Calculate age from date of birth.
Birthday Countdown
Calculate days until the next birthday and the age reached on that birthday.
Business Days Calculator
Count business days between two dates.
Calendar Quarter Calculator
Find the quarter, half-year, month number, and day of year for a date.
Countdown Timer
Create a simple countdown in days, hours, minutes, and seconds from a target date and time.
Date Add Subtract Calculator
Add or subtract days, weeks, months, and years from a date.
Date Difference Calculator
Calculate days between two dates.
Days Until Calculator
Count days remaining until a target date from today or from a custom start date.
Deadline Calculator
Plan work remaining before a deadline by estimating units per day.
Month Calculator
Add or subtract months from a date and show the resulting calendar date.
Pay Period Calculator
Estimate upcoming pay dates from a first payday and pay cycle length.
Pomodoro Timer
Plan focus sessions and breaks using the Pomodoro method for study, writing, and coding.
Sleep Cycle Calculator
Estimate wake-up times based on 90-minute sleep cycles plus time to fall asleep.
Stopwatch
Use a clean stopwatch with start, stop, reset, and elapsed time for study or work sessions.
Time Card Calculator
Calculate total paid hours from multiple shifts entered as start,end,break minutes.
Time Duration Calculator
Calculate duration between two times.
Time Zone Meeting Planner
Compare meeting times across manual UTC offsets for remote teams and calls.
Unix Timestamp Converter
Convert Unix timestamp to readable date.
Week Number Calculator
Find the ISO week number for any date.
Working Hours Calculator
Calculate work hours between clock-in and clock-out times after subtracting breaks.