How to Calculate Attendance Percentage

Attendance percentage shows how often a student was present out of the total number of class days.

Attendance percentage formula

Formula: Attendance Percentage = (Days Attended / Total Class Days) × 100

Step 1: Count the days attended

Start with the number of days the student was present. This is the attendance number you want to compare.

Step 2: Count the total class days

Next, count the total number of school or class days in the period you are checking. This could be a week, month, quarter, or full school year.

Step 3: Divide days attended by total class days

Divide the number of attended days by the total number of class days.

Step 4: Multiply by 100

Multiply the result by 100 to turn it into a percentage.

Example 1

A student attended 23 days out of 25 total class days.

Worked example

92%

23 ÷ 25 = 0.92, then 0.92 × 100 = 92%

Example 2

A student attended 17 days out of 20 total class days.

Worked example

85%

17 ÷ 20 = 0.85, then 0.85 × 100 = 85%

Common mistakes

using absences instead of attended days in the formula
forgetting to multiply by 100
mixing up total class days and days attended
using the wrong date range

Use the calculator instead of doing it by hand

If you want the faster version, use the Attendance Percentage Calculator on School Progress Hub. It gives you the result right away without needing to do the math manually.

Open Attendance Percentage Calculator Back to Guides