How do I calculate attendance percentage?

Divide the number of days attended by the total number of scheduled school days, then multiply by 100. Attendance % = (days attended ÷ total days) × 100. For 68 days attended out of 90 total: (68 ÷ 90) × 100 = 75.6%. The same formula applies for per-subject attendance — use that subject's class count as the total.

What is the minimum attendance requirement?

Most Indian universities require 75% minimum attendance for exam eligibility (UGC guidelines). UK universities typically require 80–90% and monitor weekly. US college policies vary widely — some have none while others require 80%. Many schools have subject-wise requirements that differ from the overall attendance rule. Always check your institution's specific policy in the student handbook.

How many classes can I miss and still pass?

Formula: maximum absences = total days × (1 − minimum threshold ÷ 100). For a 75% requirement with 120 total days: 120 × 0.25 = 30 maximum absences. Missing 31 or more drops you below 75%. To find remaining absences allowed: (current days present − required minimum days), where required minimum = total days × threshold. The calculator shows this figure automatically.

Does medical leave affect attendance?

Medical leave treatment varies significantly by institution. Many universities exclude medically certified absences from the total days counted, effectively not penalizing the student. Others grant condonement (excusing absences up to a cap) with a doctor's certificate. Some require dean approval for extended illness. Always submit medical documentation within the institution's required timeframe — retroactive submissions are frequently rejected.

Can I calculate attendance for a specific subject?

Yes. Enter the lectures attended and total lectures held for that specific subject — the formula is identical. The calculator works for any attendance scenario: subject-wise lecture tracking, lab session attendance, tutorial attendance, or employee shift records. Teachers can also use it in reverse — enter total students present and total enrolled to calculate the class attendance rate for a single session.

Is my data sent to a server?

No. The attendance calculation runs entirely in your browser with JavaScript. No dates, attendance figures, or personal data are uploaded, logged, or stored anywhere. You can enter sensitive academic records without any privacy concern.

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Free Attendance Percentage Calculator — Check Minimum Requirement

Attendance percentage is the proportion of school days a student has been present, expressed as a percentage. Most institutions require a minimum attendance rate (commonly 75–85%) for students to be eligible for examinations or course completion. This calculator instantly shows current percentage and how many days can still be missed.

Free — No SignupRuns in BrowserData Never Uploaded

school

Calculate student attendance percentage and check if minimum threshold is met.

Attendance percentage from days present and total days
Pass or fail check against any custom minimum threshold
Shows exactly how many days can still be missed while staying above the requirement
Recovery days calculation when attendance has already fallen below the threshold
Works for overall attendance or per-subject lecture tracking
Client-side only — no attendance figures are uploaded or stored

Features

Everything you need in one Attendance Percentage Calculator

Attendance percentage formula

Applies the standard formula — days attended divided by total days, times 100 — and shows the exact percentage with a clear pass or fail check.

Custom minimum threshold

Defaults to the common 75% requirement, but accepts any threshold so it fits schools and universities with an 80% or 85% rule.

Days you can still miss

When you are above the requirement, the tool calculates exactly how many more days you can be absent without dropping below the line.

Recovery days when short

If you are below the requirement, it shows how many consecutive days you must attend to climb back to the minimum.

How It Works

How to use Attendance Percentage Calculator

Enter days present and total days

Input the number of days the student attended and the total school days so far.

Set minimum requirement

Enter the institution's minimum attendance threshold (default 75%).

See result

The calculator shows current attendance %, pass/fail status, and how many more days can be missed without falling below the threshold.

Format Comparison

Attendance percentage examples — 90-day term

Days attended	Total days	Attendance %	Meets 75%?
90	90	100%	Yes
80	90	88.9%	Yes
72	90	80.0%	Yes
68	90	75.6%	Yes (just)
63	90	70.0%	No
54	90	60.0%	No

Troubleshooting

How to fix common syntax errors

Most “invalid JSON” failures come from a small set of mistakes. Paste the failing JSON above, click Validate, and the tool points you at the exact line and column.

Using classes skipped instead of classes attendedAttended = total − absences (entered as absences directly)

Enter the number of days actually attended, not the number missed. If you know absences, subtract from total first: days attended = total days − days absent. Entering absences in the "attended" field inverts the result.

Using total calendar days instead of scheduled school daysTotal days = 365 for a full academic year

Only count days the institution was actually scheduled — exclude weekends, public holidays, and exam breaks. A typical school year has 180–220 scheduled days, not 365. Using 365 deflates the attendance percentage significantly.

Rounding percentage before comparing to threshold74.6% rounded to 75% = pass

Do not round before checking. Most institutions use the unrounded percentage against the threshold — 74.6% fails a 75% requirement. Round only for display, not for the pass/fail decision.

Applying the overall attendance formula to per-subject trackingUsing total school days for a subject with fewer scheduled classes

For per-subject attendance, use that subject's scheduled classes as the total — not the overall school-day count. A subject meeting 3 times per week has ~90 classes in a 30-week year, not 180.

Counting medical or authorised leave as absent without checking policyMedical leave days subtracted from attendance like regular absences

Many universities exclude certified medical absences from the total days counted, effectively treating them as neither present nor absent. Check your institution's policy before entering medical leave days as regular absences — it may significantly change the result.

Forgetting to update total days as the term progressesChecking attendance mid-term using end-of-year total days

Total days should reflect how many school days have occurred so far, not the full-year total. Using a larger denominator (e.g. 180 full-year days when only 60 have passed) understates the current attendance percentage.

FAQ

Frequently asked questions

Attendance percentage is the proportion of scheduled school or class days a student has been present, expressed as a percent. Formula: (days attended ÷ total days) × 100. Example: 72 days attended out of 90 total = 80% attendance. It is a key academic metric used to determine exam eligibility, course completion status, scholarship qualification, and promotion to the next academic year.

Free Software

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