Months to Days Converter
1 month = 30.436875 days
A month is not a fixed quantity: calendar months run from 28 to 31 days. This converter uses one twelfth of the mean Gregorian year (30.436875 days). For a specific calendar month, count the actual days.
The calendar day is exactly 86,400 s here. Actual solar days vary by milliseconds, and leap seconds have occasionally been added to civil time.
1 month equals 30.4369 days
How to convert months to days
A day here is a duration of 86,400 seconds. Unless explicitly labeled Julian, months and years use the mean Gregorian convention (365.2425 days per year; one twelfth per month), rather than the actual length of a particular calendar interval.
d = mo × 30.436875One month is 30.436875 days, so a single multiplication converts any value.
304.369 d ≈ 10 × 30.436875A month is not a fixed quantity: calendar months run from 28 to 31 days. This converter uses one twelfth of the mean Gregorian year (30.436875 days). For a specific calendar month, count the actual days.
The calendar day is exactly 86,400 s here. Actual solar days vary by milliseconds, and leap seconds have occasionally been added to civil time.
Months to days conversion table
Common values in months, converted to days.
| Months (mo) | Days (d) |
|---|---|
| 1 | 30.436875 |
| 2 | 60.87375 |
| 5 | 152.18438 |
| 10 | 304.36875 |
| 15 | 456.55313 |
| 30 | 913.10625 |
| 60 | 1,826.2125 |
| 90 | 2,739.3188 |
| 120 | 3,652.425 |
About these units
monthmo
The average Gregorian month: 30.436875 days.
dayd
Exactly 24 hours, or 86,400 seconds.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.