Tools
Process images, PDFs and tables. Files stay in your browser.
Alarm and countdown
Count down from a set time or ring at a clock time with built-in tones while this page stays open.
Calendar with Chinese lunar dates
Month calendar from 1901 to 2099 with lunar dates, solar terms, traditional and public festivals, and stems and branches.
Cron expression builder
Build or paste Quartz (seconds, optional year) or Unix five-field cron expressions, read them in plain words and list the next run times.
Date calculator
Add or subtract days, weeks, months or years from a date, and count the days, weeks and working days between two dates.
Leap years and leap months
Check whether a year is a leap year, list the leap years in a range, and see each year’s Chinese leap month and the length of its solar and lunar years.
Chinese double hours
The twelve double hours with clock times, traditional names, zodiac animals and night watches, the current double hour, and old units of time.
Stopwatch
Time to the hundredth of a second with laps; the fastest and slowest laps are marked.
World clock
Current time in major cities and any time zone, with UTC offsets and differences from yours; convert a chosen time between zones.