Year progress = days passed Γ· total days in the year Γ 100%. Leap years have 366 days, common years have 365. Days passed excludes today (counts completed days).
2026 is not a leap year. 2024 was a leap year, and the next one is 2028. You can check any date and the tool will automatically detect leap years.
Yes! The progress updates automatically when the page loads and refreshes every minute. All calculations happen locally in your browser.