SRM grading scale: letters, points, and the mark that earns them.
Unofficial student guide. Not affiliated with SRM Institute of Science and Technology. Numbers are estimates from the rules this site's calculators implement. The regulation PDF is the 2021 B.Tech / integrated M.Tech regulation.
SRM grade letters are pointers to grade points, and the grade points are what enter SGPA. On the scale this site calculates with, O is 10, A+ is 9, A is 8, B+ is 7, B is 6, C is 5, and a fail, absence or incomplete is 0. The letter on the grade card is not decorative. Replacing an A with an A+ on a 4-credit course is one extra grade point times four credits, which is four grade points, which is visible in the semester average.
A second scale sits beside the letters: the combined mark out of 100 that the internal-marks tool treats as the door to each letter. That tool uses 91, 81, 71, 61, 56 and 50. Those are not the same statement as "O means 90 to 100" on an older poster. This guide follows the calculator, because the calculator is the thing on the page that will give you a number. When the regulation PDF and a photocopy disagree, follow the PDF that applies to your admission year. The link used elsewhere on this site is the 2021 B.Tech / integrated M.Tech regulation.
Students lose marks in conversation by averaging letters. "Mostly A" is not an SGPA. Three 4-credit A grades are 3 × 4 × 8 = 96 grade points over 12 credits, SGPA 8.00. Swap one of them to a 4-credit B+ and the points fall to 4×8 + 4×8 + 4×7 = 92, SGPA 7.67. The letter moved one step. The average moved a third of a point. The calculator on this page is the way to stop doing that arithmetic in your head during a crowded lab.
One step, counted in credits
Hold the credits still and move one letter, then watch the semester. Four courses, all 4 credits, all A (8): each course is 32 points, the four together are 128 points over 16 credits, and the SGPA is 8.00. Change the last course to A+ (9): the three remaining A's stay at 96 points and the A+ adds 36, so the total is 132 over 16 credits, SGPA 8.25. One letter on one heavy course moved the semester by a quarter point.
Now drop that same course to C (5): 4 × 5 = 20, plus the 96, is 116 over 16, SGPA 7.25. From A+ to C on one heavy course is a full point on the semester average. People describe that as "one subject went badly." The CGPA hears it as a point. Put the real forecast into the calculator, including the C, before you tell yourself the semester is "around 8."
Fails are harsher than a low letter because the credits remain and the points do not. A 4-credit fail adds 0 over 4. The other three A's stay at 96 over 12, but the semester is 96 over 16, SGPA 6.00. The three strong courses did not "carry" the fail. They were diluted by it. Reappearance later replaces the zero only when the new grade is on the card. Until then the zero is in this sum.
Letters, points, and the cutoff this calculator uses
O is 10 points, A+ is 9, A is 8, B+ is 7, B is 6, C is 5, and F, Ab or I is 0. One credit of O is worth 10 grade points. One credit of C is worth 5. A 2-credit lab at O is 20 points. A 4-credit theory at C is also 20 points. They feel different in the week and they weigh the same in the sum. That is the whole reason a "small" lab at the top of the scale cannot rescue a heavy theory that landed on C: 20 does not beat 20, and the theory also brought twice the credits into the denominator.
The internal-marks calculator on this site turns those letters into combined-score cutoffs of O 91, A+ 81, A 71, B+ 61, B 56 and Pass 50, using combined = internal out of 60 plus 40% of the end-sem paper. A table elsewhere on the GPA page still prints an older O-from-90 sketch. Do not treat the two tables as the same rule. When they disagree, the regulation PDF for your admission year wins, and the number you type into a placement form is the letter on the grade card, not the cutoff you hoped for. The box above uses the 10-point letters. It does not invent a company cutoff.
SGPA calculator on this page
Grade points used here: O = 10, A+ = 9, A = 8, B+ = 7, B = 6, C = 5, F / Ab / I = 0. Credits are whole numbers from 1 to 10. The result is credit-weighted and stays in this browser.
Estimated SGPA: 0.00
The rows above are the free calculator. A one-time export of an eight-semester sheet is listed on pricing at $19. You do not need that export to use the calculator.
Questions this page answers
What are SRM grade points?
O is 10, A+ is 9, A is 8, B+ is 7, B is 6, C is 5, and F, Ab or I is 0.
Why is O shown as 91 and not 90?
The internal-marks calculator on this site uses a combined cutoff of 91 for O, 81 for A+, 71 for A, 61 for B+, 56 for B and 50 for Pass. Confirm the band against your regulation.
Does a higher letter always raise SGPA the same amount?
No. One step up is one grade point times the course credits. A 4-credit step is worth twice a 2-credit step.
Related pages: all guides, SGPA and CGPA calculator, attendance calculator, internal marks calculator, credit tracker, optional export pricing.