Time & Date
Leap Year Calculator
Check if a year is a leap year
Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-13
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
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Frequently asked questions
What does the Leap Year Calculator do?
It helps you check if a year is a leap year.
What inputs do I need?
Enter Year.
Are decimals supported?
Yes, you can use decimal values where appropriate.
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About this tool
This Leap Year Calculator turns your inputs into practical results. Provide Year to calculate Leap year? and Days in year.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.