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Attendance Percentage Planner
Find consecutive attendances needed to reach a target and future absences allowed at that target.
Sessions attended, Sessions held, Your target attendance (%), Future scheduled sessions
JSON
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter the labelled values using the displayed units and explicit assumptions.
- Choose Calculate result and review the complete report and any undefined or no-solution states.
- Choose Download result to save the complete JSON. Reset clears the result and restores example controls.
Examples
Sessions attended: 70
Sessions held: 100
Your target attendance (%): 75
Future scheduled sessions: 40
Limitations
- Whole attended0–held,held1–1e9,future sessions0–1e9,target>0–100%. Exact decimal threshold comparison. Target100% after any absence is unattainable by finite additional attendance;report null needed. Future allowance assumes all other future sessions attended. No school-policy or statutory attendance interpretation.
- Scalar controls accept explicit finite decimal syntax;positive values normally1e-12–1e12,nonnegative0–1e12 unless a narrower range is stated. JSON numeric rows use finite IEEE754 values within their stated bounds. Derived counts above1billion and nonfinite results refuse. Combined input<=400000UTF8 bytes;complete JSON<=4MiB. All processing stays in your browser.
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