Check If a Year Is a Leap Year

Need to quickly find out whether a year is a leap year or a common year? The Check If a Year Is a Leap Year Tool lets you paste or type one or more years and instantly get a result for each one. It uses standard leap year logic and clearly labels each entry.

You can enter as many years as you want one per line and export or copy the output with a click.

Paste your input above or import a file below.
No file chosen
Supported file types: .txt, .csv, .log
Total lines: 0

How to Use:

  1. Type or paste one year per line in the Input Year(s) box.
  2. Click Check or type to trigger the live validation.
  3. The Result box will show leap year, common year, or invalid for each entry.
  4. Use Copy Output to copy results or Export to File to download them.
  5. Click Clear All to reset everything.

What Check If a Year Is a Leap Year Tool can do:

  • Verifies each year and labels it as either a leap year or common year
  • Supports multiple inputs at once (one year per line)
  • Identifies invalid or malformed entries
  • Automatically updates results as you type
  • Includes copy and export options
  • Shows a total count of processed lines

Example:

Input:

2000
1900
2024
2023
hello

Output:

2000 = leap year
1900 = common year
2024 = leap year
2023 = common year
hello = invalid

Common Use Cases:

This tool is helpful for programmers validating date logic, teachers explaining leap year rules, or anyone working with year-based data. It’s a quick, reliable way to check leap year status without writing formulas or looking up calendar tables.

Useful Tools & Suggestions:

If you’re checking for leap years, Find Leap Years lets you explore a full list over time. And for contrast, Find Common Years shows which ones don’t have that extra February day.

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