Attendance Percentage Calculator

Last updated: November 14, 2026

Direct answer. Attendance % = (Attended ÷ Held) × 100. 12 of 16 meetings is 75%. Additional meetings needed for a target is rounded up from (Target ÷ 100 × Held − Attended) ÷ (1 − Target ÷ 100). From 12 of 16, reaching 80% takes 4 more attended meetings.

U.S. schools, colleges, and some workplaces track attendance as days or class meetings attended divided by days or meetings held. Policies often name a target such as 75% or 80%. This calculator reports the current percent, how many future meetings you would need to attend in a row to hit a target, and how many remaining meetings you can still miss if a remaining count is known.

How to use this calculator

• Enter meetings attended and meetings held so far.
• Use the current-percent mode for the simple rate, including days missed so far.
• Use the “more needed” mode with a target percent, or the “still missable” mode with a target and the number of remaining meetings.

The formula

The current rate is a part-to-whole percent. The “more needed” figure assumes every additional meeting is attended, and rounds up to a whole meeting. Units are counts of meetings or days, and a percent for the target.

Worked examples

When this is useful in the United States

A U.S. high school or college course that states a 75% or 80% attendance rule is the intended setting. Count class meetings the same way the syllabus does, whether that is periods, days, or labs.

If the term has 4 meetings left and the target is 75%, the missable-days mode will tell you how many of those 4 can be missed without going below the target, assuming you attend the rest.

Workplaces that track scheduled shifts can use the same math, but official payroll rules may define “held” and “excused” differently. Follow the policy when it conflicts with a raw count.

Common mistakes

• Counting an excused absence as attended, or leaving it in the held total, if the school removes excused days from the denominator. Match the official rule.
• Trying to recover 100% after a missed day. Additional attended days cannot erase a miss that remains in the total.
• Entering remaining meetings as a percent.

Excused absences, tardies, and late drops are policy decisions, not math. If a handbook removes excused days from the held count, subtract them from both sides only when official rules say so. The “more needed” result is a count of future meetings that must be attended without a further miss; if you miss another meeting, re-run the numbers. Results are whole meetings because you cannot attend a fraction of a required meeting in this model. Re-run the figures after any new absence, even if you already had a plan for the remaining meetings. A single extra miss changes both the current percent and the number still missable. Use the same meeting count your instructor uses, including or excluding labs exactly as the syllabus does. If a course meets twice on some days and once on others, count meetings, not calendar days, unless the syllabus counts days. Mixing the two will make the target math disagree with the official record. When in doubt, copy the running totals from the attendance roster and paste those counts here.

Frequently asked questions

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