Day of Year Calculator
Find the ordinal day number and see how much of the year has passed.
← All date calculatorsDay of Year
Day 248
117 days remaining
68% complete
248
of 365
117
Days left in year
Week 36
Q3
Smart Insights
How It Works
The day of year is calculated as the number of days from January 1 to the selected date, including January 1 as day 1. Leap years have 366 days.
Frequently Asked Questions
How is day of year calculated?
January 1 is day 1. Each subsequent day increments the count. December 31 is day 365 (or 366 in a leap year).
What is year progress?
Year progress = (day of year ÷ total days in year) × 100. It shows how much of the year has elapsed.
How are remaining days calculated?
Remaining days = total days in year − day of year.
What is the purpose of this calculator?
It's useful for planning, scheduling, and understanding where a date falls within the calendar year.
Does this account for leap years?
Yes. The calculator uses 366 days for leap years and 365 for common years.
Can I check past years?
Yes. The calculator supports any date in the Gregorian calendar.
Last reviewed: July 20, 2026