Question 1

How do I find a date from week number?

Accepted Answer

Week 1 starts around January 1-7. Multiply week number by 7 and adjust for year start.

Question 2

Are there 52 or 53 weeks in a year?

Accepted Answer

Usually 52, but some years have 53 weeks if January 1 falls on Thursday (or Wed/Thu in leap years).

Question 3

How do leap years affect these calculations?

Accepted Answer

Leap years add an extra day (Feb 29) every 4 years, except centuries not divisible by 400. Our calculator accounts for all leap year rules.

Question 4

Which calendar system does this use?

Accepted Answer

This uses the Gregorian calendar (standard worldwide since 1582). For historical dates before adoption, results may differ from Julian calendar dates.

Week number to Date Tool - Free Online Tool

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