How many days are left in the year? This days left in year calculator shows exactly how many days remain until December 31st, updating in real-time based on today's date.
Days left in year calculator
The calculator defaults to today's date and shows how many days remain in the current year. Change the date to see days left from any point - useful for planning deadlines, goals, or year-end tasks.
Quick reference: days left by month
Here's roughly how many days remain in the year at the start of each month (non-leap year):
| Month Start | Days Left | % of Year Remaining |
|---|---|---|
| January 1 | 365 days | 100% |
| February 1 | 334 days | 92% |
| March 1 | 306 days | 84% |
| April 1 | 275 days | 75% |
| May 1 | 245 days | 67% |
| June 1 | 214 days | 59% |
| July 1 | 184 days | 50% |
| August 1 | 153 days | 42% |
| September 1 | 122 days | 33% |
| October 1 | 92 days | 25% |
| November 1 | 61 days | 17% |
| December 1 | 31 days | 8% |
July 1st marks the year's midpoint. (If you're reading this in the second half of the year, you're in the home stretch!)
Leap years add a day...
During leap years (2024, 2028, 2032...), the year has 366 days instead of 365. The extra day falls on February 29th, so from March 1 onward, you'll have one more day remaining compared to non-leap years.
What day number is it?
The calculator also shows the current day number (1-365 or 1-366). Some notable day numbers:
- Day 100 - April 10 (or April 9 in leap years)
- Day 183 - July 2, the year's midpoint
- Day 256 - September 13, Programmer's Day (28)
- Day 365/366 - December 31, New Year's Eve
Find any date from a day number
The second section of the tool converts day numbers back to calendar dates. Enter any day number (1-366) and year to see which date it corresponds to. Useful for interpreting Julian dates in data files or scheduling systems.
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