60% Attendance Calculator
Enter your classes held and attended to see whether you meet the 60% attendance requirement, how many classes you can still miss, or how many you must attend in a row to get back to 60%.
You are above 60%. You can miss up to 25 of the next classes and still be eligible.
Step-by-step solution
- Current attendance = (45 ÷ 50) × 100 = 90%
- To stay at 60%: 45 ÷ (50 + y) ≥ 0.6
- y ≤ 45 ÷ 0.6 − 50 = 25 → you can miss 25 classes
60% attendance ready reckoner
Minimum classes you must attend, and the most you can miss, to be at exactly 60% after a given number of classes.
| Classes held | Must attend (min) | Can miss (max) |
|---|---|---|
| 10 | 6 | 4 |
| 20 | 12 | 8 |
| 30 | 18 | 12 |
| 40 | 24 | 16 |
| 50 | 30 | 20 |
| 60 | 36 | 24 |
| 80 | 48 | 32 |
| 100 | 60 | 40 |
| 120 | 72 | 48 |
| 150 | 90 | 60 |
| 200 | 120 | 80 |
The formula
Attendance % = attended ÷ held × 100. To stay at 60%, you can miss floor(attended ÷ 0.6 − held) more classes. If you are below 60%, attend ceil((0.6 × held − attended) ÷ 0.4) classes in a row.
Frequently asked questions
How many classes can I miss with a 60% attendance requirement?
Out of every 100 classes you can miss at most 40. For your own numbers, enter them in the calculator above — it accounts for classes already held.
How do I calculate if I have 60% attendance?
Divide classes attended by classes held and multiply by 100. If the result is 60 or more, you meet the requirement.
I am below 60%. How many classes must I attend?
Use (0.6 × held − attended) ÷ (1 − 0.6) and round up. For example, with 30 of 60 classes you need to attend the next 15 classes without a break.