Education Calculators

Calculators built for Indian students: the 75% attendance rule, marks percentage across subjects, SGPA/CGPA with conversion to percentage, and weighted course grades, including the score you need on your final exam.

Student tools at a glance

  • Attendance Calculator: your current percentage, the number of classes you must attend to reach 75%, or how many you can still miss.
  • Marks Percentage Calculator: combines subjects with different maximum marks correctly, with a division and class guide and the best-of-five method.
  • CGPA Calculator: credit-weighted SGPA and CGPA on the UGC 10-point scale, with common CGPA-to-percentage formulas.
  • Grade Calculator: weighted grades from assignments, mid-terms and finals, plus the score needed on your final to hit a target.

Three mistakes students often make

Averaging percentages instead of marks

72/100 in theory and 45/50 in practical is 117/150 = 78%, not the 81% you get by averaging 72% and 90%. Always add the raw marks first.

Taking a simple average of SGPAs

If semesters carry different credits, CGPA must be credit-weighted. The difference can decide whether you clear a placement cut-off of 7.0.

Letting attendance slide early

At a 75% requirement, every missed lecture needs about three attended lectures to make up for it. It is far easier to stay above the line than to climb back late in the semester.

Rules vary by institution

Grading scales, CGPA-to-percentage formulas, attendance condonation and pass marks are set by each board and university: CBSE, state boards, AICTE-affiliated universities, autonomous colleges. Our calculators use the most common methods and say so clearly, but your institution’s ordinance or mark-sheet legend is always the final authority.

Need percentages for other things? Try the general Percentage Calculator or the Average Calculator.