IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines)
percentage to CGPA
Quick answer: At IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines), 80% is about a CGPA of 8 on the 10-point scale, reversing the official formula % = CGPA/OGPA × 10. (official source) Last verified 2026-07-19.
IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines) — % → CGPA
Converting IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines) percentage back to CGPA
IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines) (Jharkhand) officially converts CGPA to percentage with % = CGPA/OGPA × 10. This page inverts that formula so you can estimate the CGPA behind a known percentage — useful when a scholarship form, job portal or foreign application asks for CGPA but your marksheet only shows a percentage. Enter your percentage above and the calculator solves for the CGPA on the 10-point scale.
Worked example
The official IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines) formula is % = CGPA/OGPA × 10. To go the other way, you rearrange it to solve for CGPA. Starting from a percentage of 80%, the formula reverses to a CGPA of about 8 on the 10-point scale. You can check this by running 8 through the forward IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines) CGPA to percentage calculator — it returns 80%, confirming the two directions agree.
Why this is an estimate, not an official figure
A university issues your percentage from your actual CGPA, not the other way around — so reversing the formula recovers the CGPA that would produce that percentage. It matches in almost every case, but rounding on your transcript (for example a percentage printed to one decimal place) can shift the back-calculated CGPA slightly. When both numbers appear on your grade card, always quote the official CGPA rather than this estimate.
About IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines)
The Indian Institute of Technology (Indian School of Mines), Dhanbad — IIT (ISM) Dhanbad — is an Institute of National Importance in Dhanbad, Jharkhand. Founded in 1926 as the Indian School of Mines and renamed an IIT with effect from 6 September 2016, it offers B.Tech, integrated/dual-degree, M.Tech, M.Sc, MBA and Ph.D programmes across engineering, sciences and management on a 10-point relative-grading system (using OGPA, the Overall Grade Point Average, on the final grade card).
Address: IIT (ISM) Dhanbad, Dhanbad – 826004, Jharkhand, India.
Source & verification
IIT (ISM) Dhanbad certifies that CGPA/OGPA × 10 equals the percentage of marks (OGPA 8.0 → 80%), per its 9th Senate meeting; the institute follows relative grading from 2013-14. IIT(ISM) uses the term OGPA (Overall Grade Point Average) on the final grade card. Note: a commonly-cited online claim of (OGPA − 0.5) × 10 (giving 8.0 → 75%) is incorrect — the official rule is plain × 10.
Need the usual direction? Use the IIT (ISM) Dhanbad — Indian Institute of Technology (Indian School of Mines) CGPA to percentage calculator, or browse the full percentage to CGPA directory.