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How many days in a month?

Online calculator to find the number of days in a month.
Justin Hales

There are about
30.4
⁠
days in one month.

On average, a common year has
30.4
⁠
days per month and a leap year has
30.5
⁠
days per month.
Days in a month calculator
14
From
Month
Swap
​
To
Day
Input a number
1
Result
30.4
1 of 1
⁠

Number of days in each month
2
Month
No. of Days
1
January
31
2
February (common year)
28
3
February (leap year)
29
4
March
31
5
April
30
6
May
31
7
June
30
8
July
31
9
August
31
10
September
30
11
October
31
12
November
30
13
December
31
There are no rows in this table
⁠


An easy way to remember: the knuckle trick


⁠
image.png
⁠
⁠
An easy way to remember how many days are in each month is by with the
knuckle trick
⁠
. Here’s how you do it:
Make a fist with both hands, then touch the sides of your hands and thumbs together like in the diagram above
Start at the left pinky knuckle - this is January. Then move to the depression to the right, just before your next knuckle - this is February.
Knuckles are 31 and depressions are 30 (or 28/29 in the case of February). Continue moving along the knuckles and depressions of both hands and matching each spot with a month of the year (as pictured above).

You might also want to know

⁠
What is leap year?
⁠
⁠
⁠
When is the next leap year?
⁠
⁠
⁠
How many days in a year?
⁠
⁠
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