Date Difference Calculator
Find the exact duration between two dates in years, months, days, total weeks, total hours, and business days (Mon–Fri).
✓ Runs in your browser · Updated 2026-03-31Enter values and click Calculate Difference to see results
How to Calculate the Difference Between Two Dates
The date difference calculator computes the exact span between any two calendar dates. It breaks the result into years, months, and days, and also shows totals in days, weeks, hours, and business days. This is useful for project planning, contract durations, and personal milestones.
Business Days: Exclude Saturdays and Sundays from the total count.
Understanding Business Days
Business days (also called working days) exclude weekends — Saturday and Sunday. Many industries use business day counts for delivery estimates, legal deadlines, and payroll calculations. In India, some sectors also work on Saturdays, so check your specific requirements.
Year-Month-Day Breakdown
The breakdown first calculates full years, then full months from the remaining period, and finally the leftover days. This gives an intuitive human-readable duration like "2 years, 3 months, 15 days."
Related Calculators
Use the Age Calculator to find your exact age in years, months, and days. Try the Work Days Calculator for business-day counts with holiday exclusions, or the Time Duration Calculator for time-of-day spans.
Frequently Asked Questions
How is the date difference calculated?
The calculator finds the exact span between two dates by computing years, months, and remaining days. It also shows the total in pure days, weeks, hours, and minutes.
Does it count the end date?
By default, the end date is excluded (e.g., Jan 1 to Jan 3 = 2 days). Toggle 'Include end date' to count it as 3 days.