Your Privacy Matters

Everything runs entirely in your browser. The dates and values you enter are never uploaded, stored, or shared - nothing leaves your device. 100% private.

All Tools

Date & Time Calculator

Age, duration, working days, epoch & cron. Private & in-browser.

Age Duration Add / Subtract Working days Epoch Cron

Date of birth

From

To

Start date

From

To

Unix timestamp (s or ms)

Date → timestamp

Cron expression (min hour day-of-month month day-of-week)

100% client-side · by Ajay Kakkar