Question 1

How do I calculate the number of days between two dates?

Accepted Answer

Use the Date Difference mode: select a start date and end date. The calculator instantly shows the exact difference in years, months, weeks, days, total days, hours, and business days.

Question 2

How do I calculate my exact age?

Accepted Answer

Switch to Age Calculator mode, enter your date of birth, and optionally adjust the "as of" date. You'll see your exact age in years, months, weeks, and days.

Question 3

How do I count days until an event?

Accepted Answer

Use the Countdown mode and select your target date. A live countdown shows days, hours, minutes, and seconds remaining.

Question 4

How do I add or subtract days from a date?

Accepted Answer

Switch to Add / Subtract mode, pick a start date, choose Add or Subtract, enter the amount, and select the unit (days, weeks, months, or years). The result date appears instantly.

Question 5

How do I calculate business days between two dates?

Accepted Answer

Use the Business Days tab. Select a start date and end date to get the exact count of working days (Monday–Friday). Optionally select your country to automatically exclude public holidays — supported for 20+ countries including the US, UK, Germany, France, Israel, India, Japan, China, and more.

Question 6

Does the business days calculator exclude public holidays?

Accepted Answer

Yes. In the Business Days tab, select your country from the Country / Region dropdown. The calculator will automatically exclude national public holidays for that country from the business day count, and show you a list of which holidays fell in the date range.

Question 7

Which countries are supported for holiday exclusion?

Accepted Answer

The Business Days Calculator supports public holiday exclusion for 20+ countries including United States, United Kingdom, Germany, France, Canada, Australia, Japan, India, Brazil, Israel, China, South Korea, Mexico, Italy, Spain, Netherlands, Poland, Portugal, Russia, and South Africa.

Date Difference Calculator