wikiHow Leap Year Calculator To calculate whether a year is a leap year or not, you can follow these steps: 1. If the year is divisible by 4, go to step 2. If it is not divisible by 4, it is not a leap year. 2. If the year is divisible by 100, go to step 3. If it is not divisible by 100, it is a leap year. 3. If the year is divisible by 400, it is a leap year. If it is not divisible by 400, it is not a leap year. For example: 1. 2020 is divisible by 4, so go to step 2. 2. 2020 is not divisible by 100, so it is a leap year. 3. 2100 is divisible by 4, so go to step 2. 4. 2100 is divisible by 100, so go to step 3. 5. 2100 is not divisible by 400, so it is not a leap year. 6. 2000 is divisible by 4, so go to step 2. 7. 2000 is divisible by 100, so go to step 3. 8. 2000 is divisible by 400, so it is a leap year. Page