Attendance calculator
Your attendance rate, and how many more hours you can miss without going over the limit.
How it works
Attendance = 1 − hours missed / hours held. Remaining margin = total × allowed absence − hours already missed.
Results are for guidance only and do not replace professional advice.
Worked example
With the default values:
- Total class hours (term or year)320
- Hours held so far140
- Hours missed12
- Maximum absence allowed (%)10
you get:
- Hours you can still miss20 h
- Current attendance91.4 %
- Total absence allowed32 h
- If you miss nothing more96.3 % attendance at the end
Frequently asked questions
How does the “Attendance calculator” tool work?
Attendance = 1 − hours missed / hours held. Remaining margin = total × allowed absence − hours already missed.
What do I need to enter?
Just fill in: total class hours, hours held so far, hours missed, maximum absence allowed. The result updates as you type.
Can you give an example?
Total class hours (term or year): 320; Hours held so far: 140; Hours missed: 12; Maximum absence allowed (%): 10 → Hours you can still miss: 20 h; Current attendance: 91.4 %.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.