Number of weeks per year . While arithmetically each year consists of 52 weeks and 1 or 2 days, with numbered calendar weeks there are also 53 and 54 weeks per year . How Many Weeks , Hours, Minutes & Seconds Are in a Year ? (Simple 2025 Guide) Updated 2025 Quick answers: A common year (365 days) has 52 weeks + 1 day, 8,760 hours, 525,600 minutes, and 31,536,000 seconds. A leap year (366 days) has 52 weeks + 2 days, 8,784 hours, 527,040 minutes, and 31,622,400 seconds. Use the simple calculators below to check any year , compare common vs leap totals, and convert years to hours, minutes, and seconds. Explore weeks in a year with our interactive calculator and visual calendar. Learn about ISO week numbering, academic years, and historical week systems. Tools for week number lookup and day of year conversion included. Calculate the exact number of weeks in any year . Find out why a year has 52 weeks plus 1-2 extra days, with leap year detection and detailed time breakdowns.
