Date & Time

Working with dates and times accurately is more complex than it first appears — timezone differences, leap years, business day exclusions, and Unix timestamps all introduce tricky edge cases. The Date & Time category provides 13 free tools that handle every common scenario cleanly and correctly.

The Age Calculator gives your exact age in years, months, and days, while the Date Difference Calculator counts the precise number of working or calendar days between two dates. The Unix Timestamp Converter is indispensable for developers debugging APIs and log files, and the Timezone Converter handles DST correctly across all IANA timezone names. For scheduling and project management, the Workdays Calculator and Countdown Timer are reliable daily companions.

All tools work in your local timezone by default while offering UTC output where relevant. They are fully client-side, so there is no latency, no account required, and no data sent to any server. Bookmark the ones you use most — they load instantly every time.