Attendance Days & Semester Explorer
Instantly convert percentages to days, check your 1-day impact, and plan your semester.
Percent → Days
Required to Attend
…
Days You Can Miss
…
Days → Percent
Your Percentage
… %
1-Day Impact
Each class day is worth:
… %
Scenario Planner Results
Current %
… %
Best Possible %
… %
Status
…To reach your 75% target (requires … total days):
- You must attend … of the … remaining classes.
- You can miss … more classes.
Your final percentage would be: … %
Why “100 days of school”?
Many examples use 100 or 200 days as a simple way to think about an academic year. A “100-day” period makes percentages easy (e.g., 75% is 75 days). A “200-day” year is also common, where each day is worth 0.5%. Use the helpers to find the exact number of working days for your specific term.
Assumptions
Calculations assume all days are weighted equally. Toggling “Mon–Fri only” estimates working days by removing about 2/7ths of the total days. Holidays are subtracted from the total working days. Makeup days are added back.