How many weeks are in a month?

Calendar months vary (28 to 31 days), so there is no single answer. This tool uses the average Gregorian month — 365.2425 ÷ 12 = 30.436875 days, which is about 4.3481 weeks per month.

Why is the result not a whole number?

Because a month is not an exact number of weeks. One month averages roughly 4.35 weeks, so 3 months is about 13.04 weeks rather than a round figure.

Is my input uploaded anywhere?

No — the conversion runs entirely in your browser and nothing is sent over the network.

Months to Weeks Converter

Convert months to weeks (and back) using the average month.

Months to weeks

A calendar month is not a fixed number of weeks, so this converter uses the average Gregorian month: 365.2425 ÷ 12 = 30.436875 days, which is about 4.3481 weeks per month.

Type a number of months to see the equivalent in weeks, or press Swap to convert weeks back to months. Because months vary from 28 to 31 days, treat the result as an approximation. Everything is calculated locally in your browser.