Months to Days Converter
Convert months to days instantly. Enter any value and get the result. Includes a conversion table and the exact formula.
| Months | Days |
|---|
How to convert months to days
Enter your value
Type the number of months you want to convert into the left box. The result in days appears instantly in the right box. You can also type into the right box to convert in the other direction.
Use the swap button
Click the ⇄ Swap button to reverse the conversion — Days to Months. Your current value carries across so you don't have to re-enter anything.
Why "a month" doesn't have one fixed number of days
Unlike converting kilometres to miles, months-to-days has no single exact answer — a calendar month is 28, 29, 30 or 31 days depending on which month (and whether it's a leap year). This converter uses the average length of a month across a full year: 365.25 days ÷ 12 = 30.4375 days per month, the same figure used for average-month calculations in finance, insurance and scheduling. It's the right approach for estimating a general span of time (e.g. "roughly how many days is 6 months"), but if you need the days in a SPECIFIC calendar month — say, exactly how many days between 15 March and 15 June — count the real calendar days for those exact months instead, since they won't match the average precisely.
Where months-to-days comes up in real life
Tenancy, loan and notice periods
UK rental agreements, loan terms and notice periods are frequently written in months ("6-month tenancy," "give 2 months' notice") but need to be tracked in days for deadlines — a 6-month tenancy is approximately 183 days (6 × 30.4375), though the exact end date always depends on the specific calendar months involved.
Pregnancy and medical timelines
A full-term pregnancy is commonly described as "9 months" but medically tracked in weeks (40 weeks ≈ 280 days) — using the average month figure, 9 months works out to about 274 days, close to but not identical to the 280-day medical standard, which is itself based on 40 weeks rather than a round number of months.
Visa and travel-duration limits
Many visa-free stay allowances are specified in days within a rolling period (e.g. "90 days in any 180-day period" for the UK/EU Schengen area) rather than months — converting a "3-month visa" into days (≈91 days) helps compare it directly against a day-based limit.
1 month ≈ 30.44 days (annual average). But: January = 31, February = 28/29, etc. For legal purposes in UK contracts, '6 calendar months' means 6 actual months from the given date, not 180 days. This distinction matters for notice periods, mortgage terms and rental agreements.
| Months | Days |
|---|---|
| 1 | 30.44 |
| 2 | 60.88 |
| 3 | 91.31 |
| 4 | 121.8 |
| 6 | 182.6 |
| 9 | 273.9 |
Frequently asked questions
How do I convert months to days?
To convert months to days, multiply by 30.4375. Or use the calculator above for instant results.
How many days are in 1 month?
1 month equals 30.4375 days.
Is the months to days converter free?
Yes, the months to days converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.
How many days are in 6 months?
6 months is approximately 182.6 days (6 × 30.4375), though the exact number depends on which 6 calendar months are involved — it can range from 181 to 184 days.
Why isn't a month exactly 30 days?
Calendar months range from 28 days (February, 29 in a leap year) to 31 days (January, March, May, July, August, October, December). This converter uses the average across a full year — 30.4375 days — rather than a flat 30, since a flat 30 would understate a year by more than 5 days (12 × 30 = 360, not 365).