Date Calculator: Days & Age

No account. Works offline. Instant results, with no ads on the calculators. Date calculator, days between dates, age calculator, business days calculator, countdown.

Use this date calculator to find days between dates, add or subtract calendar time, and plan a deadline. See calendar breakdowns, total days and business days with selected US federal holidays excluded. Choose whether to include the end date and review the holidays skipped.

The age calculator shows calendar age, the next birthday and total days lived. A February 29 birthday can use February 28 or March 1 in common years. The business days calculator supports observed federal holidays and Pro custom dates. Save a countdown for a trip, occasion or deadline, and pin upcoming events to a home-screen widget.

Every calculator is free, with up to three saved events. One lifetime Pro purchase adds unlimited events, custom holiday dates, widget styles and removes ads. A rewarded ad can unlock widget styles for 24 hours when available. Backup export and import use a JSON file. No account is required.

Plan with a date calculator, check days between dates, use the age calculator, consult the business days calculator, and keep a countdown close to home.

Recent changes:
Initial release.