Time & date tools

Calculate the next and previous leap year for any given year

Calculate the number of days between two dates, along with weeks, months, years, hours, minutes, and seconds.

Calculate how long you've been in a relationship. Enter the start date and see the duration in years, months, and days, plus total days, weeks, and months together.

Calculate how many days you have lived since your birth date, including breakdown by years, months, weeks, hours, minutes, and seconds.

Check if a given year is a leap year. Leap years have 366 days instead of the usual 365 days.

Calculate optimal sleep and wake times based on 90-minute REM sleep cycles for better sleep quality.

Calculate the time remaining until a specific date and time, with live countdown and timezone support

Convert time units between.

Understand CRON expressions for scheduling tasks.

Identify the timezone of the current browser.

Detect your browser or system regional date and time format settings, including 12h/24h clock, week start day, timezone, calendar, and numbering system.

Convert Unix timestamps to human-readable dates and times.

A simple stopwatch tool for timing events.

Set a countdown timer with customizable hours, minutes, and seconds. Features audio alert when time is up.

Create a visual countdown to any date and time. Perfect for tracking deadlines, events, birthdays, holidays, product launches, and celebrations.

Calculate the number of days, weeks, months, and years until your retirement age

Real-time high-precision digital clock displaying hours, minutes, seconds, and milliseconds with fullscreen mode and customizable appearance

Generate a list of dates between two dates with customizable step, format, and separator

Add or subtract days, weeks, months, and years from any date with detailed result information

Find ISO week number, day of year, quarter, and week date range for any date

Calculate how long you have worked at each job. Enter start and end dates for multiple positions to see the duration in years, months, and days, plus combined total experience.

Calculate how long you have been friends with someone. Enter the date your friendship started and see the exact duration in years, months, days, and more.

Generate a random time within a selected start and end range.

Calculate days and streak duration since you quit a habit.