About EduCalcLab
EduCalcLab is a free set of calculators and guides for students in India. We turn the marks, percentages and attendance rules that universities publish into simple tools you can check in seconds — with the formula and its source shown every time.
What we do
Our five calculators cover the conversions Indian students look up most: CGPA to percentage, SGPA and CGPA, percentage to CGPA, attendance, and target CGPA planning. Each result shows its working, so you can verify it against your university’s own scale instead of taking a number on trust.
How we check our formulas
We use the conversion scales universities publish — including CBSE (×9.5), the general (CGPA − 0.75) × 10 scale, IIT/NIT (×10), Anna University (×9.5), Mumbai University (7.1 × CGPA + 11) and SPPU (×9.5). Where universities differ, we say so, and we flag every result as an estimate: your university’s official scale always prevails.
Who it is for
Students across CBSE, VTU, Anna University, Mumbai University, SPPU, IITs, NITs and other Indian universities — anyone who needs a quick, honest answer about their marks.