Indian Institute of Technology Madras (IIT Madras)
CGPA to percentage
Quick answer: At Indian Institute of Technology Madras (IIT Madras), a CGPA of 8.5 is about 85%, using the official formula % = CGPA × 10 (graduated 11.11.2020 onwards); 55 + 10×(CGPA − 6) for earlier graduates. (official source)
Indian Institute of Technology Madras (IIT Madras) — CGPA → %
How Indian Institute of Technology Madras (IIT Madras) converts CGPA to percentage
Indian Institute of Technology Madras (IIT Madras) (Tamil Nadu) uses the formula % = CGPA × 10 (graduated 11.11.2020 onwards); 55 + 10×(CGPA − 6) for earlier graduates to convert a 10-point CGPA into a percentage for transcripts, job applications and higher studies. Enter your CGPA above to convert it instantly.
Worked example
Take a CGPA of 8.5 on the 10-point scale. Applying the official Indian Institute of Technology Madras (IIT Madras) formula % = CGPA × 10 (graduated 11.11.2020 onwards); 55 + 10×(CGPA − 6) for earlier graduates gives a percentage of about 85%. Change the CGPA in the calculator above and the percentage updates instantly using this same formula.
Why the formula matters
Using the official conversion keeps your percentage defensible if an admissions office or employer asks how you calculated it.
Source & verification
IIT Madras Senate-approved CGPA-to-Percentage Conversion certificate, F.No. Acad/Cert./2025 (01-12-2025), Dean (Academic Courses)
IIT Madras uses two Senate-approved formulas by graduation date. Graduated from 11.11.2020 onwards: Percentage = CGPA × 10 (CGPA 8.5 → 85%). Graduated up to 10.11.2020: Percentage = 55 + 10 × (CGPA − 6), which simplifies to (CGPA × 10) − 5 (CGPA 8.5 → 80%). Pick the option matching your graduation date. Note: IIT Madras does NOT use ×9.5 — recent graduates use plain ×10.
College contact
Address: IIT P.O., Chennai – 600036, Tamil Nadu, India.
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