Source: JNTUH R22 B.Tech Academic Regulations (official PDF) . Quoted from clause 11.2 of the R22 B.Tech Academic Regulations. Checked 22 August 2026. Always confirm against your own marks memo before using this on an application.
| Grade | Grade points | Marks range |
|---|---|---|
| O | 10 | 90% and above |
| A+ | 9 | 80% to below 90% |
| A | 8 | 70% to below 80% |
| B+ | 7 | 60% to below 70% |
| B | 6 | 50% to below 60% |
| C | 5 | 40% to below 50% |
| F | 0 | Below 40% (Fail) |
| Ab | 0 | Absent |
Built for JNTUH R22, not a generic calculator
This uses the conversion rule published in JNTUH’s own R22 B.Tech Academic Regulations — clause 11.2 — rather than one of the general formulas that float around online:
% of Marks = (final CGPA – 0.5) x 10
Source: JNTUH R22 B.Tech Academic Regulations (official PDF). The grade table above is from clause 9.2 of the same document.
Work out your CGPA first
If you have your CGPA from the university, enter it above. If you only have semester marks, use the SGPA and CGPA calculator — enter every subject from every semester and it produces your CGPA using clause 9.9.
Note that under R22, CGPA is calculated from the second year onwards across all registered courses.
Quick reference
| CGPA | Percentage |
|---|---|
| 10.0 | 95% |
| 9.0 | 85% |
| 8.5 | 80% |
| 8.0 | 75% |
| 7.5 | 70% |
| 7.0 | 65% |
| 6.5 | 60% |
| 6.0 | 55% |
| 5.5 | 50% |
Useful when a company sets a percentage cut-off: a 60% requirement means a CGPA of 6.5, and 70% means 7.5.
Before you put this on an application
Cross-check against your official marks memo. If your memo already prints a percentage, use that number, not this one — a mismatch on an application form looks worse than a lower figure.
Different JNTU universities are also separate institutions. JNTUK and JNTUA publish their own regulations, and you should not assume the R22 rule carries across. Check the regulations for the university that issued your degree.
Common questions
Does this work for R18 or R16? The R22 clause is what’s implemented here. Older regulations are separate documents with their own conversion clauses — check yours before relying on this.
Does it work for M.Tech or MBA? No. Those have their own regulation booklets and their own clauses.
Does this store my data? No. Everything runs in your browser.
More tools: SGPA to CGPA · percentage to CGPA · attendance calculator · all free tools