Attendance Calculator: 75% Planner, Classes Needed & Can Miss

If you are below 75%, every class you attend raises your percentage a little, but every class held also adds to the total. That is why the number needed is larger than the gap you see.

Example: 30 out of 50 (60%). Classes needed = (75 × 50 − 100 × 30) ÷ 25 = 30. After 30 more classes in a row, you have 60 out of 80 = 75%.

At a 75% target, each class you miss costs 3 classes attended to recover, because 75 ÷ 25 = 3. At 80%, it costs 4; at 85%, about 5.7.

End of term: enter "Classes Left This Term" to see the best percentage you can still reach, how many of the remaining classes you must attend, and how many you can afford to miss.

If you are above the requirement, the calculator shows the most classes you can miss before falling below it.

Example: 50 out of 60 (83.33%). You can miss 6 classes: 50 out of 66 = 75.76%. A seventh would take you to 50 out of 67 = 74.63%, below 75%.

Keep a margin. Medical emergencies, a strict subject teacher or a lab that counts separately can all push you below the line late in the term.

Most universities and colleges check attendance subject by subject, not only overall. Your overall figure can be above 75% while one subject is short, and that subject can stop you from taking its exam.

Example (calculator default): Mathematics 32/40 (80%), Physics 25/36 (69.44%), Chemistry 30/38 (78.95%), English 14/20 (70%). Overall it is 101/134 = 75.37%, but Physics needs 8 more classes in a row and English needs 4.

Add up to 12 subjects. Labs and tutorials can be entered as separate rows if your college counts them separately.

Rules differ by board, university and course, and some institutions set higher limits. Always check your own institution's attendance rules and keep medical certificates for any absence you may need condoned.

For employees, attendance decides paid days and therefore salary. In Employee mode:

• Attendance % = (full days present + 0.5 × half days) ÷ working days × 100.
• Paid days = days present + paid leave.
• Loss of pay (LOP) days = working days − paid days.
• LOP deduction = monthly gross ÷ salary days basis × LOP days.

Example: 26 working days, 22 full days, 1 half day and 2 days of paid leave give 22.5 days present (86.54%), 24.5 paid days and 1.5 LOP days. On ₹30,000 gross, on a working-days basis, that is ₹1,154 a day and a ₹1,731 deduction. Under Section 20 of the Code on Wages, 2019, a deduction for absence cannot be more than the share of the wage period you were absent.

Attendance also decides other entitlements:

• Annual leave: under the OSH Code, a worker who has worked 180 days or more in a calendar year earns 1 day of leave for every 20 days worked. See the leave accrual calculator and the leave encashment calculator.
• Bonus: eligibility needs at least 30 days worked in the accounting year. See the bonus calculator.
• Gratuity: 240 days worked in a year count as a year of continuous service. See the gratuity calculator.

For salary on a 30-day, 26-day or calendar-day basis in detail, use the monthly salary calculator. For team attendance trends, see the absenteeism rate calculator and the attrition rate calculator.

1. Classes / 75%: enter the required percentage, classes held and classes attended. Add classes left this term for an end-of-term plan.
2. Subject-wise: enter held and attended for each subject. Use "+ Add subject" for more rows.
3. Employee: enter working days, full days present, half days and paid leave. Add gross salary to see the loss of pay.
4. Results update as you type. Use Copy to share your figures with a classmate, teacher or HR.