Day of Year Calculator
What day of the year is it, and how many days are left?
Day of Year
Type 8 digits (e.g. 20260101 → 2026-01-01), or use the 📅 icon.
This year
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Details
💡 Day 1 is January 1. A common year has 365 days; a leap year has 366 (Feb 29 included).
FAQ
What day of the year is it today?
Open this page and it automatically shows today's day number counted from January 1. For example, January 1 is day 1 and February 1 is day 32. Enter any date to see its day-of-year value.
How many days are left in the year?
The calculator shows the number of days remaining until December 31, along with the percentage of the year that has already passed.
How many days are in this year?
A common year has 365 days and a leap year has 366. A leap year is divisible by 4, except years divisible by 100 unless also divisible by 400 (e.g. 2024 and 2028 are leap years, 2100 is not).
What is the 'day of year' number used for?
The day-of-year number (sometimes called an ordinal date) is used in spreadsheets, journaling, project tracking, and programming. It counts each day from 1 (January 1) up to 365 or 366.
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