Time Tools

Convert timestamps, timezones, and perform date mathematics.

Calculate future or past dates by adding or subtracting time.

Measure exact age in years, months, days, weeks, and hours from any birth date.

Calculate working days between two dates while excluding weekends and custom holidays.

Preview a live countdown and generate a simple embeddable countdown snippet.

Preview the next matching run times for a cron expression using a configurable base date.

Calculate the exact time elapsed between two specific dates.

Parse human-readable dates into Unix timestamps.

Normalize messy dates into strict ISO 8601 strings.

Convert between calendar dates and astronomical Julian day numbers.

Format parsed dates into strict RFC 3339 timestamps with configurable precision.

Run a millisecond-resolution stopwatch with lap and split tracking.

Convert millisecond timestamps to localized date strings.

Convert dates and times across global IANA timezones instantly.

Convert Unix epoch timestamps into human-readable dates.