🔍 Leap Year Checker
Instantly verify whether any year is a leap year with TOOLXI's accurate Leap Year Checker. Understand the logic behind leap years and never get February wrong again.
Examples:
2020 ✅ Leap Year (divisible by 4, not by 100)
1900 ❌ Not a Leap Year (divisible by 100 but not by 400)
2000 ✅ Leap Year (divisible by 400)
✅ Features
- 🕒 Instant Check – Type in any year and get immediate results
- 📆 Supports All Years – Works for past, current, and future years
- 📚 Leap Year Logic Explained – Understand why a year is or isn't a leap year
- 🔁 Multiple Checks – Enter multiple years without refreshing
- 💻 Responsive Design – Mobile & desktop friendly
- 🔒 Secure & Lightweight – No data stored, quick performance
📘 What Is a Leap Year?
A leap year is a year that has 366 days instead of 365, with an extra day added to February (Feb 29) to keep our calendar in alignment with Earth's revolutions around the sun.
Leap Year Rules:
A year is a leap year if:
- It is divisible by 4
- Except years divisible by 100, unless also divisible by 400
🎯 Who Can Use This Tool?
- 📚 Students & Teachers – For calendar-related assignments and learning
- 📅 Event Planners – Ensure accurate date planning for February events
- 👨💻 Developers & Testers – For date/time validation in apps
- 🧠 Curious Minds – Check any year just for fun!
🔄 How to Use:
- Enter any year (e.g., 2024, 1900, 2100)
- Click "Check"
- Instantly see whether it's a Leap Year or not — with a short explanation!
Leap Years from 1900 to 3000
Note: The years 1900, 2100, 2200, 2300, 2500, 2600, 2700, 2900, and 3000 are not leap years.
🔄 How to Use the Leap Year Checker
Step 1: Enter a Year
Type any year (past, present, or future) in the input box.
Example:
2024,1900,2100, etc.
Step 2: Click “Check”
Press the “Check” button or hit Enter on your keyboard.
Step 3: View the Result
✅ Leap Year → If the year has February 29 (366 days).
❌ Not a Leap Year → If February only has 28 days.
A brief explanation will appear explaining why it is/isn’t a leap year.
Example Checks:
| Year | Result | Reason |
|---|---|---|
| 2024 | ✅ Leap Year | Divisible by 4, not by 100 |
| 1900 | ❌ Not a Leap Year | Divisible by 100 but not 400 |
| 2000 | ✅ Leap Year | Divisible by 400 |
Tips:
🔹 Try multiple years – No need to refresh, just enter a new year.
🔹 Learn the rules – The tool explains the leap year logic.
🔹 Works on any device – Mobile-friendly and fast.
📋 Quick Summary
Type a year → Click Check → See Result ✅❌
No data stored – Your checks are private.
Perfect for students, planners, and developers!
About Leap Years
Leap years are necessary to keep our calendar in alignment with Earth’s revolutions around the Sun. It takes Earth approximately 365.242189 days to orbit the Sun, so without leap years, our calendar would drift by about 6 hours each year.
Our calculator follows the official Gregorian calendar rules established in 1582:
- A year is a leap year if it is divisible by 4
- But not if it is divisible by 100, unless it is also divisible by 400
This means that 2000 was a leap year, but 1900 was not.