CGPA Calculator for Indian Students: SGPA to CGPA and Percentage
Free CGPA calculator for Indian students: convert SGPA to CGPA with credit weights, then to percentage using CBSE x 9.5 or (CGPA - 0.75) x 10.
If you are checking this between classes, here is the short version: your CGPA is the credit-weighted average of every semester so far, and the calculator above computes it two ways. In SGPA mode, enter each semester’s SGPA and its credits; it returns CGPA = sum(SGPA x credits) / sum(credits). In subject mode, enter grade points and credits for one semester’s subjects and it returns that semester’s SGPA. It also converts CGPA to percentage two ways: the CBSE rule (CGPA x 9.5) and the formula many universities use, (CGPA - 0.75) x 10. Those two disagree by 3.25 points at a CGPA of 8.5. Grading rules genuinely differ between boards, universities and even autonomous colleges in the same state. This page explains where each formula came from and which one applies to you. The calculator estimates using the standard credit-weighted method; your registrar’s published scale governs your actual marksheet.
How do I convert SGPA to CGPA?
Multiply each semester’s SGPA by that semester’s credits, add the products, then divide by the total credits. For four semesters of 6.80 x 27, 7.60 x 26, 8.80 x 22 and 9.20 x 19, that is 749.6 weighted points over 94 credits, so CGPA = 7.97. A plain average of those four SGPA values would have said 8.10. Use SGPA mode in the calculator above so the credit weighting is applied for you.
Calculate Now
CGPA Calculator
Key Information
| Parameter | Details |
|---|---|
| Core CGPA formula | CGPA = sum(SGPA x credits) / sum(credits) |
| CBSE conversion | Percentage = CGPA x 9.5 (indicative) |
| Common university rule | (CGPA - 0.75) x 10, used by MAKAUT and VTU 2018 & earlier schemes |
| One 8.50 CGPA, three schemes | 85.0% (Anna / VTU 2021-22) / 80.75% (CBSE) / 77.5% (VTU 2018) |
Frequently Asked Questions
How do I convert SGPA to CGPA?
Multiply each semester’s SGPA by that semester’s credits, add the products, then divide by the total credits. For four semesters of 6.80 x 27, 7.60 x 26, 8.80 x 22 and 9.20 x 19, that is 749.6 weighted points over 94 credits, so CGPA = 7.97. A plain average of those four SGPA values would have said 8.10. Use SGPA mode in the calculator above so the credit weighting is applied for you.
Should I use CGPA x 9.5 or (CGPA - 0.75) x 10?
Use whichever your own institution publishes. CGPA x 9.5 is a CBSE school rule, derived from board data for the A1 band, and it yields an indicative percentage. (CGPA - 0.75) x 10 is what MAKAUT and VTU’s 2018 and earlier schemes specify, though VTU’s 2021 and 2022 schemes use CGPA x 10, while Anna University’s regulations also use CGPA x 10 with no deduction. On a CGPA of 8.50 those three give 80.75, 77.5 and 85.0 percent. Check your examination regulation or grade card legend before quoting any figure.
Can one bad semester ruin my CGPA?
No, but it takes a few semesters to dilute, because credits carry forward permanently. A 6.0 SGPA in a 27-credit first semester needs roughly three later semesters near 9.0 to pull the running CGPA back above 8.0. Failed papers hurt most: an F scores 0 grade points while its credits stay in the denominator, so one 4-credit F can drop a semester from 8.0 to 6.55. Clearing backlogs early is the fastest fix.
Are these calculators free to use?
Yes, all calculators on CalcCorp are completely free — no registration, no login, no hidden charges. Results are calculated instantly in your browser and we do not store any of your data.
How accurate are these calculations?
Our calculators use standard financial formulas updated with the latest tax rates, interest rates, and government policies for 2026. Results are accurate for planning purposes but should be verified with a professional for final decisions.
Related Calculators
More Education Calculators
Popular Calculators
Last updated: March 2026