Date Calculator

Free date calculators — count days between two dates, add or subtract from a date, and count business days excluding weekends and public holidays.

Two tools for working with dates:

• Date Duration Calculator — count days, weeks, months, or years between two dates, or add and subtract from a date
• Business Days Calculator — count working days between two dates, excluding weekends and US public holidays

All calculations run entirely in your browser — no data is sent anywhere.