Days to Months Converter

What this converter does

This turns a number of days into months. Because months are not all the same length, it works on an average month rather than a real one, so the answer is a practical estimate for getting a feel for a span, not an exact calendar count. Enter the days and the months come straight back.

How to use it

1. Enter Days. Type the number of days.

Press Calculate and the equivalent in months appears.

The average month it uses

The conversion divides by about 30.42, the length of an average month in days. The figure comes from splitting a 365-day year into 12 equal months, which gives roughly 30.42 days each. That sits sensibly between the short months and the long ones, so it serves as a single typical value to divide by. So 30.42 days is treated as one month, and a full 365 days comes back as about 12 months, as you would hope.

Why this is rough, not exact

Real months run from 28 days to 31, so no actual month is exactly 30.42 days, and a span that lands across particular months can differ from this estimate. That is fine for the job it does, telling you roughly how many months a day count comes to, but it is not exact. If you need the precise number of months between two real dates, a date-to-date tool that counts the actual calendar is the one to use, because it knows the true length of each month involved.

An example

Take 30.42 days. Divide by 30.42 and you get about 1 month. A span of 91 days is roughly 3 months, and 365 days is about 12 months. The results are approximate by design, giving the scale in months rather than an exact figure.

Questions people ask

How many days are in a month?

About 30.42 on average, from a 365-day year divided by 12. Real months vary from 28 days to 31.

Is the result exact?

No, it is an estimate based on an average month. For an exact figure, use a date-to-date tool that counts the real calendar.

How many months is 90 days?

About 2.96 months, just under 3, since 90 divided by 30.42 is close to three. People often treat 90 days as roughly 3 months for convenience.

How do I go from months back to days?

Multiply the months by about 30.42, or use a months-to-days converter, which uses the same average.