Time and date

Timestamps, world clock, stopwatch and countdown.

Convert Unix timestamps to human dates and back, in seconds or milliseconds, in UTC, your local time zone or ISO 8601. Free, live, in-browser.

See the current time in cities around the world, compare time zones side by side, and find a meeting slot that works in all of them. Free.

A free online countdown timer with presets, a sound alarm, fullscreen mode and a shareable link. Runs accurately even in a background tab.

A precise online stopwatch with lap times, keyboard shortcuts and millisecond display. Accurate in background tabs. Free, no signup.

Calculate the number of days between two dates, or add and subtract days, weeks and months from a date. Business day mode included. Free.

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