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Free Student Calculators — Percentage, CGPA & Attendance

Free online calculators for Indian students: marks-to-percentage, CGPA to percentage (CBSE 9.5 rule) and back, and an attendance "can I bunk?" calculator. Instant, no signup, no ads.

✓ 100% Free ✓ No Login Needed ✓ NCERT / CBSE Aligned ✓ Download as PDF

TL;DR: Free online calculators for Indian students: marks-to-percentage, CGPA to percentage (CBSE 9.5 rule) and back, and an attendance "can I bunk?" calcula…

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 23, 2026

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