Date & time
Convert timestamps and work with dates across time zones.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Seconds or milliseconds, ISO 8601, UTC, local — all in one place.
Open →Time Zone Converter
Convert any wall-clock time across the world's major time zones at a glance, with live UTC offsets and DST handled automatically.
Open →Workdays Counter
Count business days between two dates, skipping the weekend pattern of your choice and any custom holidays.
Open →Date Format Converter
Paste a date in any common format and get ISO 8601, RFC 2822, Unix, US, EU, SQL and more — instantly.
Open →Countdown Timer
Count down to any moment — a launch, a deadline, a holiday, the next weekend — with a live, second-by-second display.
Open →Stopwatch
A precise online stopwatch with millisecond resolution, lap times and keyboard shortcuts.
Open →Pomodoro Timer
Run the classic Pomodoro work-and-break cycle right in your browser, with custom durations and an audible alert.
Open →Duration Calculator
Add and subtract durations, or sum daily timecards (in/out times with breaks) to a running total.
Open →World Clock
See the current time in cities around the world side by side. Drag to reorder, switch between 12 and 24-hour format, and your list is remembered.
Open →Sunrise & Sunset Calculator
Compute sunrise, sunset, solar noon and the three twilight phases for any latitude, longitude and date. Everything runs in your browser.
Open →Moon Phase
Get the moon phase, illumination percentage and lunar age for any date, with an accurate moon disc rendered live.
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