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Studies & students

Maximum absence calculator

Maximum absence calculator: Attendance and absence must use the same unit.

Your result

Complete the fields and calculate.

Calculation method and formula

maximum(0, Total course hours [h] × (1 − Minimum attendance [%] ÷ 100) − Already absent [h])

Understand the inputs

Total course hours
Unit: Std.. Minimum 0. Use a measured value or your own assumption.
Minimum attendance
Unit: %. Minimum 0. Maximum 100. Use a measured value or your own assumption.
Already absent
Unit: Std.. Minimum 0. Use a measured value or your own assumption.

Assumptions and limitations

Attendance and absence must use the same unit. The tool does not know your institution's excused-absence rules, exemptions or rounding requirements.

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

Worked example

Illustrative values. Replace them with your own inputs for your calculation.

Total course hours
120 h
Minimum attendance
80 %
Already absent
8 h
Example result16 absence hours remaining

Maximum allowed in total: 24 hours.

Model revision: October 17, 2026 · How CleverCalc works

FAQ

Frequently asked questions

How does Maximum absence calculator work?+

maximum(0, Total course hours [h] × (1 − Minimum attendance [%] ÷ 100) − Already absent [h]). Attendance and absence must use the same unit. The tool does not know your institution's excused-absence rules, exemptions or rounding requirements.

What assumptions should I consider for this result?+

Attendance and absence must use the same unit. The tool does not know your institution's excused-absence rules, exemptions or rounding requirements. The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

How accurate is the result?+

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation. Prices, measurements and model assumptions determine how well the result represents your situation.

Is this calculator free?+

Yes. Calculations and PDF export work without an account or registration.

What happens to my inputs?+

Calculations run in your browser. Results are saved locally only when you add them to My results; favourites and history are also local. Shared links contain your values. The currency tool requests the selected currencies from its rate provider without sending your amount.

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