Track, calculate, and manage time intervals with exact precision across different formats. Use these tools to find the duration between two dates, calculate working hours, count down to events, or convert time zones seamlessly for global scheduling and productivity tracking.
See how many weeks and days are left in the current year from today or any date.
See the live ISO 8601 and US week number, week start and end dates, and weeks left.
Live today's date, clock, week number, day of year, leap year, and date formats.
There are 52 weeks in a typical year, plus leftover days. See ISO 53-week years and leap years.
See weeks and leftover days by month, averages, and the 4.33 payroll rule.
Count weeks and days between two dates, or add and subtract weeks from a start date.
Calculate days between two dates, or add and subtract years, months, weeks, and days.
Find the date that is X weeks from today instantly.
Sunday vs Monday week starts, and how ISO 8601 defines the first day of the week.
Live countdown in days, hours, minutes, and seconds until tomorrow or any date.
What time will it be in X hours? Get the future clock time and date instantly.
What time was it X hours ago? Get the past clock time and date instantly.
Find the year, date, and day of the week for X years ago from today.
Countdown to any date and time for birthdays, holidays, New Year, or Christmas.
Free online timer for cooking, workouts, study, and meetings with presets and sound.
Free online stopwatch with start, pause, lap splits, and reset.
Set free online alarms in your browser with presets, sound options, and snooze.
Convert times between time zones and compare clocks around the world.
See the current UK time (GMT/BST) and convert between UK and other time zones.
Calculate age in years, months, and days from a date of birth, or age on any date.
Calculate days between dates or add and subtract years, months, weeks, and days.
Add or subtract time, find hours between two times, sum HH:MM values, and convert decimal hours.
Find hours and minutes between two times or dates, with optional break minutes and decimal hours.
Calculate weekly time card hours from clock-in and clock-out times, with overtime estimates.
Calculate the duration between two times or dates in hours, minutes, and seconds.
Calculate listening time and time savings at different audiobook playback speeds with real-time results.
Professional download time calculator with real-time results, 6 file size units (B to PB), 4 speed units (bps to Gbps), binary/decimal systems, upload mode, 16 quick presets, completion timestamps, and comprehensive transfer metrics.