Time Tools

Unix timestamp, date math, duration, fullscreen clock and stopwatch — no lunar calendar.

World time

World Clock Current time in major cities.

Clocks & timers

Fullscreen Clock Large digital clock for screens and projectors. Stopwatch & Timer Stopwatch with laps, countdown presets, fullscreen.

Calculators

Unix Timestamp Convert between Unix time and date strings. Date Calculator Add days or find difference between dates. Date & Time Add/subtract durations or compare datetimes. Duration (H/M/S) Add or subtract hours, minutes, and seconds.