Attendance Calculator
Attendance is sessions attended over total sessions. Enter the required threshold and it also shows the minimum needed and your remaining slack.
Your numbers
Attendance
81.3%
Absences left
1
Result
12
What it means
Above the 75% requirement — you can miss 1 more and still qualify.
Formula
Attendance = Attended ÷ Total sessions × 100
Institutions differ on how many late arrivals count as one absence — check the rule before entering counts.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Total sessionsThe total number of sessions — all the classes, say. | 16 | 1 and up |
| AttendedHow many you actually turned up to; check the rules on late arrivals. | 13 | 0 and up |
| Target % (%)The concentration you want; lower means add water, higher means add solute. | 75 | 0 ~ 100 |
Step by step
Quick reference table
Results when only Total sessions changes and everything else stays put.
| Total sessions | Attendance (%) | Absences left | Result |
|---|---|---|---|
| 8 | 162.5 | 7 | 6 |
| 12 | 108.3 | 4 | 9 |
| 16 | 81.3 | 1 | 12 |
| 24 | 54.2 | 0 | 18 |
| 32 | 40.6 | 0 | 24 |
What each result means
| Result | At default values |
|---|---|
| Attendance (%)Sessions attended divided by sessions held. | 81.3 |
| Absences leftHow many more you can skip and still clear the bar. | 1 |
| ResultWhat the formula gives back — the answer this page is for. | 12 |
Common mistakes
Institutions differ on how many late arrivals count as one absence — check the rule before entering counts.
Glossary
- Total sessions
- The total number of sessions — all the classes, say.
- Attended
- How many you actually turned up to; check the rules on late arrivals.
- Target %
- The concentration you want; lower means add water, higher means add solute.
- Attendance
- Sessions attended divided by sessions held.
- Absences left
- How many more you can skip and still clear the bar.
- Result
- What the formula gives back — the answer this page is for.
Frequently asked questions
Q. How is Attendance Calculator calculated?
Attendance = Attended ÷ Total sessions × 100 — Attendance is sessions attended over total sessions. Enter the required threshold and it also shows the minimum needed and your remaining slack.
Q. Can you walk through an example?
With Total sessions 16, Attended 13, Target % 75%, the answer is Attendance 81.3%.
Q. What do I need to enter?
Enter Total sessions, Attended, Target %. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Total sessions moves the answer to Total sessions 8 → Attendance (%) 162.5 and Total sessions 32 → Attendance (%) 40.6. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
Institutions differ on how many late arrivals count as one absence — check the rule before entering counts.
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