Attendance Percentage Calculator
Current attendance, classes you can skip and classes needed to reach 75%. Results update as you type.
Enter your details
Results
Fill in the details above and the results appear here.
About the Attendance Percentage Calculator
See your attendance percentage, whether you meet the required minimum, how many classes you can still miss, or how many you must attend in a row to get back to the limit. Add the classes still to be held to plan the rest of the term.
The required percentage defaults to 75% and can be changed.
The calculation runs in your browser, so the numbers you enter are not uploaded or stored.
Attendance Percentage Calculator example
Classes held so far: 80
Classes you attended: 58
Required attendance: 75 %
Classes still to be held: 40Current attendance: 72.5%
Classes to attend in a row to reach 75%: 8
Classes you must attend: 32 of 40
Final attendance if you attend all: 81.7%How it is calculated
Attendance is attended ÷ held × 100. To recover, the calculator finds the smallest number of consecutive classes x so that (attended + x) ÷ (held + x) reaches the target. To find how many you can skip, it finds the largest s where attended ÷ (held + s) stays at or above the target.
Attendance % = attended ÷ held × 100Classes to attend in a row = ⌈(R × held − attended) ÷ (1 − R)⌉, where R is the required fractionClasses you can still miss = ⌊attended ÷ R − held⌋
What to enter
- Required attendance. Blank = 75%.
- Classes still to be held. To plan the rest of the term.
How to use the Attendance Percentage Calculator
- Fill in the fields above. Required fields are marked, optional ones can be left blank and fall back to the defaults described on this page.
- Use “Try an example” to see a worked case, then replace the numbers with your own.
- Read the results as you type. The large card is the main answer and the smaller cards are the related figures.
- Copy a single value or everything, or share a link that keeps your inputs.
Attendance Percentage Calculator FAQ
How does the attendance percentage calculator work?
Attendance is attended ÷ held × 100. To recover, the calculator finds the smallest number of consecutive classes x so that (attended + x) ÷ (held + x) reaches the target. To find how many you can skip, it finds the largest s where attended ÷ (held + s) stays at or above the target.
How many classes can I miss and still keep 75%?
It depends on your numbers. Enter classes held and attended: the calculator shows how many more you can skip before you drop below the limit.
Why does attending more classes help slowly?
Every class attended also adds to the total held, so recovering from a low percentage takes many consecutive classes.
Is this attendance percentage calculator free and private?
Yes. It is free with no sign-up, and the calculation happens on your device, so your numbers are never sent to a server.
More student & education calculators
Required Marks CalculatorCGPA to GPA & Percentage ConverterStudy Hours PlannerReading Completion Time CalculatorTyping Speed & Accuracy Calculator
All student & education calculators → · All everyday calculators →