Days Between Calculator

The Days Between Calculator is an online tool that computes the number of days between two dates in multiple formats simply by entering a start and end date. It displays total calendar days, years & months & days, weeks and days, months and days, business days (excluding weekends), and weekend day counts. You can choose whether to include start and end dates when calculating business days, making it flexible for different use cases. Useful for project scheduling, contract period verification, deadline countdown, and trip planning across both business and personal contexts. Reversing the start and end dates shows a negative value, making it easy to determine date order. All processing is done entirely in your browser, so no data is ever sent externally.