That is · or
| Unit | Value |
|---|
| Total days lived | |
| Total hours lived | |
| Next birthday |
How to calculate days between two dates
Simply pick a start date and end date above. The calculator instantly shows the exact difference in days, weeks, months, years, hours, minutes, seconds, and business days. Use the Today button to anchor either date to the current day.
Business days vs calendar days
Calendar days count every day including weekends and holidays. Business days (also called working days) count only Monday–Friday, excluding Saturdays and Sundays. The calculator shows both so you can use whichever is relevant — calendar days for general use, business days for project timelines, contracts, and SLA calculations.
Common date difference questions
| Question | Answer |
|---|---|
| How many days in a year? | 365 days (366 in a leap year) |
| How many days in a month? | 28–31 depending on the month |
| How many weeks in a year? | 52 weeks and 1 day |
| How many business days in a month? | Typically 20–23 working days |
| How many business days in a year? | Approximately 260 working days |
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