Months (average) to Days converter

To convert months (average) to days, enter the value in the first field. The result in days is calculated automatically using the exact conversion factor.

1 mo = 30.436875 d
1 d ≈ 0.0328548840839 mo

Formula: d = mo × 30.436875
mo ≈ d × 0.0328548840839

Definitions: 1 mo = 1/12 yr; 1 d = 24 h

The month here is the average Gregorian calendar month, one twelfth of a year, about 30.44 days or 2,629,746 seconds. Real months last 28 to 31 days, so this is an approximation used for long-term estimates.

The day (d) here is exactly 86,400 seconds, or 24 hours. The real solar day varies slightly, and some days with leap seconds last 86,401 seconds, but this converter uses the standard 24-hour day.

See the conversion table with commonly used values, handy for quick reference or study.