How it's calculated
months = days ÷ 30.4375 (reverse: days = months × 30.4375)
30.4375 = average days per month (365.25 ÷ 12).
Common values
| Days | Months |
|---|---|
| 30 | 0.986 |
| 60 | 1.971 |
| 90 | 2.957 |
| 180 | 5.914 |
| 365 | 11.992 |
Common questions
Why 30.4375 days per month?
That is 365.25 days divided by 12, the average calendar month length once leap years are folded in.
Is 30 days the same as one month here?
Close but not exact. 30 days works out to about 0.99 months because the average month runs slightly longer than 30 days.