Kerala SSLC Grade Calculator
Pick the state board, enter marks per subject out of 100, and read the live grade, CGPA (Kerala) or aggregate marks (Karnataka, Tamil Nadu), and percentage. The grading scale and percentage formula switch with the selected board.
| Subject | Marks (out of 100) | Grade | Points |
|---|
SSLC Grade Reference (live scale for selected board)
| Marks Range | Grade | Grade Points | Description |
|---|
Scale refreshes when you switch state-board mode. Sources: Kerala Pareeksha Bhavan, Karnataka KSEEB, and Tamil Nadu Directorate of Government Examinations. Last verified: 2026-05-26.
How the SSLC Grade Is Calculated Across Indian Boards
SSLC stands for Secondary School Leaving Certificate, the Class 10 board examination issued by Indian state boards. Three of the largest state boards (Kerala, Karnataka, and Tamil Nadu) each publish their own grading scale, passing threshold, and percentage-conversion formula. The SSLC grade calculator above models all three so a student can compare results consistently or check what the same marksheet would look like under a different state's grading rules.
Kerala SSLC is the most CGPA-oriented of the three: the Pareeksha Bhavan awards letter grades A+ through E and publishes a single CGPA on the marksheet. Karnataka KSEEB and Tamil Nadu DGE both lean on aggregate marks and class divisions (Distinction, First Class, Second Class, Third Class) rather than a unified CGPA value. The calculator routes between these patterns when the state-board mode changes.
- CGPA = (Sum of grade points across all subjects) / (Number of subjects)
- Grade points = Kerala SSLC 10-point scale: A+ = 10, A = 9, B+ = 8, B = 7, C+ = 6, C = 5, D+ = 4, D = 3, E = 0
- Multiplier 9.5 is the Kerala Pareeksha Bhavan official conversion factor (not 10)
Kerala SSLC Grading System
The Kerala SSLC grading system is administered by the Pareeksha Bhavan under the Department of General Education. The grading scale is a nine-tier letter framework that maps marks (out of 100) to grade points on a 10-point CGPA scale. The Kerala system awards a grade for every subject plus a single overall CGPA aggregate.
| Marks Range | Grade | Grade Points | Performance | Plus One Stream Notes |
|---|---|---|---|---|
| 90 to 100 | A+ | 10 | Outstanding | Top science (Biology/Computer) at government schools |
| 80 to 89 | A | 9 | Excellent | Most science streams at reputed schools |
| 70 to 79 | B+ | 8 | Very Good | Commerce with Computer Applications; mid-tier science |
| 60 to 69 | B | 7 | Good | Regular commerce; humanities at top schools |
| 50 to 59 | C+ | 6 | Above Average | Humanities; vocational higher secondary |
| 40 to 49 | C | 5 | Average | Vocational; limited humanities |
| 30 to 39 | D+ | 4 | Needs Improvement | Supplementary examination recommended |
| 20 to 29 | D | 3 | Marginal Pass | Plus One admission depends on remaining subject grades |
| Below 20 | E | 0 | Fail | SAY examination required before Plus One eligibility |
The Kerala 9.5 Multiplier Explained
The 9.5 multiplier in the Kerala CGPA-to-percentage formula reflects the midpoint of the highest grade band rather than a flat 10 percent per grade point. The A+ band covers marks 90 to 100, so the band midpoint is 95. Multiplying CGPA by 9.5 (the band midpoint divided by 10) gives the expected aggregate percentage for a student whose marks sit at the centre of each grade band. The 10x estimate that some private agencies use inflates the result slightly because it assumes every A+ student scored exactly 100, which is rare. Kerala universities, scholarship boards, and the Directorate of Higher Secondary Education use the 9.5 formula on all transcripts.
Karnataka SSLC (KSEEB) Grading System
The Karnataka SSLC examination is administered by the Karnataka School Examination and Assessment Board (KSEEB, previously known as the Karnataka Secondary Education Examination Board). The Karnataka pattern examines six subjects under the Continuous and Comprehensive Evaluation (CCE) framework, with each subject scored out of 100. The aggregate is reported out of 625 in language-heavy streams and out of 600 in the standard pattern.
| Percentage Band | Grade | Class Division | Plus Two Stream Notes |
|---|---|---|---|
| 85 to 100 | A+ | Distinction | Science (PCMB), Computer Science |
| 70 to 84 | A | First Class | Science (PCMC), Commerce |
| 55 to 69 | B+ | Second Class | Commerce; humanities |
| 40 to 54 | B | Third Class | Humanities; basic vocational |
| 35 to 39 | C+ | Pass | Vocational only |
| Below 35 | C | Fail | Supplementary required |
KSEEB uses 35 as the per-subject pass mark and 35 percent aggregate as the overall pass threshold. A candidate who fails in up to two subjects can appear for the supplementary examination held in June and again in October each year. The Karnataka result printout does not include a CGPA value; institutions reference the percentage band and class division directly. The calculator above models the KSEEB scale and reports the aggregate percentage and class division when Karnataka mode is selected.
Tamil Nadu SSLC Grading System
Tamil Nadu SSLC is administered by the Directorate of Government Examinations (DGE) under the State Board of School Examinations. The Tamil Nadu pattern examines five subjects, each out of 100, for an aggregate out of 500. The DGE uses an eight-tier percentage-band letter system (A1 through E) and reports the aggregate percentage rather than a CGPA. The minimum pass mark per subject is 35 (raised from 33 in 2019), and a candidate must pass all five subjects to qualify for Plus Two admission.
| Percentage Band | Grade | Grade Points | Performance | Plus Two Stream Notes |
|---|---|---|---|---|
| 91 to 100 | A1 | 10 | Distinction | Top group 1 (Biology/Math); top schools |
| 81 to 90 | A2 | 9 | First Class | Group 1 and Computer Science streams |
| 71 to 80 | B1 | 8 | High Second | Group 2 (Commerce with CS); humanities top schools |
| 61 to 70 | B2 | 7 | Second Class | Commerce regular; humanities |
| 51 to 60 | C1 | 6 | Third Class | Humanities; vocational |
| 41 to 50 | C2 | 5 | Pass | Vocational higher secondary |
| 35 to 40 | D | 4 | Minimum Pass | Limited stream options |
| Below 35 | E | 0 | Fail | Supplementary examination required |
SSLC State Board Comparison at a Glance
Students moving between states (a common Kerala-to-Karnataka or Karnataka-to-Tamil-Nadu transfer) need to understand how the three boards line up. The table below summarises the structural differences that matter most for transcripts and Plus Two admission.
| Attribute | Kerala SSLC | Karnataka SSLC (KSEEB) | Tamil Nadu SSLC (DGE) |
|---|---|---|---|
| Number of subjects | 6 (incl. 3 languages) | 6 (incl. 3 languages) | 5 (incl. 2 languages) |
| Total maximum marks | 600 | 625 or 600 | 500 |
| Grade scale | A+ to E (9 tiers) | A+ to C (6 tiers) | A1 to E (8 tiers) |
| CGPA reported? | Yes (10-point) | No | No |
| Pass mark per subject | 20 marks (D grade) | 35 marks | 35 marks |
| CGPA-to-percentage formula | CGPA x 9.5 | n/a (use aggregate) | n/a (use aggregate) |
| Supplementary exam name | SAY (Save A Year) | Supplementary | Supplementary |
| Examination authority | Pareeksha Bhavan | KSEEB | DGE Tamil Nadu |
| Plus One/Two ranking | CGPA based (CAP) | Aggregate marks | Aggregate marks |
How to Calculate SSLC Percentage Step by Step
Working out an SSLC aggregate percentage by hand is straightforward once you know which formula applies for your state board. Follow these steps using the calculator above or replicate them on paper.
- Identify your state board. Check the marksheet header. Kerala marksheets carry the Pareeksha Bhavan seal; Karnataka marksheets carry the KSEEB seal; Tamil Nadu marksheets carry the DGE Tamil Nadu seal.
- List the subject marks separately. Most state SSLC marksheets show marks out of 100 per subject. Kerala lists six subjects with three languages; Karnataka lists six with three languages; Tamil Nadu lists five with two languages.
- For Kerala, convert marks to grade points first. Apply the Kerala 9-tier scale: 90 to 100 = 10 points, 80 to 89 = 9, and so on. Sum the grade points and divide by 6 (number of subjects) to get the CGPA.
- For Kerala, multiply CGPA by 9.5 for the percentage. A CGPA of 9.33 yields 88.7%. This is the official Pareeksha Bhavan conversion used on transcripts.
- For Karnataka and Tamil Nadu, sum the raw marks. Add the marks across all subjects (out of 600 in Karnataka, 500 in Tamil Nadu), divide by the maximum, and multiply by 100 to get the aggregate percentage.
- Cross-check the pass threshold. Kerala requires a minimum of D (20 marks) per subject; Karnataka and Tamil Nadu require 35. A single failed subject blocks the Plus One/Two admission until the supplementary or SAY result is published.
Plus One Stream Cutoffs by State and SSLC Grade
SSLC results gate Plus One (or Plus Two, depending on terminology) stream selection. Each state uses different cutoffs based on supply and demand in the local higher secondary system. The table below shows typical science, commerce, and humanities cutoffs at top-tier and mid-tier schools across the three boards.
| Stream | Kerala (CGPA) | Karnataka (% aggregate) | Tamil Nadu (% aggregate) |
|---|---|---|---|
| Science (Biology) top tier | 9.0 to 9.5+ | 85 to 95 | 85 to 95 |
| Science (Biology) mid tier | 8.0 to 9.0 | 75 to 85 | 75 to 85 |
| Science (Computer) top tier | 8.5 to 9.5+ | 80 to 95 | 80 to 95 |
| Commerce (with CS) | 7.5 to 8.5 | 65 to 80 | 65 to 80 |
| Commerce (regular) | 7.0 to 8.0 | 55 to 70 | 55 to 70 |
| Humanities / Arts | 6.0 to 7.5 | 45 to 65 | 45 to 65 |
| Vocational Higher Secondary | 5.5 to 7.0 | 40 to 55 | 40 to 55 |
SSLC Supplementary and SAY Examinations
Students who fail in one or more SSLC subjects in the main examination can re-attempt those subjects through a state-administered supplementary examination, usually within two to three months of the main result. Kerala calls this the SAY (Save A Year) examination, held in June or July; Karnataka and Tamil Nadu use the term "Supplementary" and conduct one round in June (Karnataka also runs an October round). Passing the supplementary examination allows the student to proceed to Plus One or Plus Two admission without losing the academic year.
The supplementary marksheet is issued separately from the main result. For Plus One admission ranking, the higher of the two attempts is used: a student who scored D in Mathematics in the main exam and B+ in the supplementary uses the B+ grade for CGPA calculation and CAP allotment. The original D grade remains on the transcript with a notation indicating the supplementary improvement.
Common Mistakes When Calculating SSLC Grades
- Applying the wrong percentage formula across states. Kerala uses CGPA x 9.5; Karnataka and Tamil Nadu use total marks divided by total maximum. Mixing the two understates or overstates the percentage by several points.
- Confusing the Kerala D grade with a fail. Kerala D (20 to 29 marks) is a marginal pass with 3 grade points. The actual fail grade in Kerala is E (below 20). In Karnataka and Tamil Nadu, a fail is anything below 35.
- Counting elective subjects in CGPA. The Kerala SSLC CGPA is computed across the six core subjects only. Elective performance is reported separately and does not enter the main CGPA.
- Using CBSE Class 10 grade points for state SSLC. CBSE uses A1 through E2 with different grade points (10 to 2). Mapping CBSE grades onto the Kerala A+ to E scale produces incorrect CGPA values.
- Treating supplementary marks as additive. Supplementary or SAY marks replace the failed subject grade; they do not add to the main exam aggregate. The replacement happens at the higher of the two scores.
Accuracy and Source Notes
The grading scales and percentage formulas on this page follow the Kerala Pareeksha Bhavan published SSLC grading framework (keralapareekshabhavan.in), the Karnataka KSEEB SSLC handbook (sslc.karnataka.gov.in), and the Directorate of Government Examinations Tamil Nadu rule book (dge.tn.gov.in). Plus One stream cutoffs reference the 2024 and 2025 admission notices from the Kerala Directorate of Higher Secondary Education, Karnataka Department of Pre-University Education, and Tamil Nadu Directorate of Higher Secondary Education. Cutoffs change year over year based on applicant pool and seat availability. Always verify the current cutoff on the relevant department's notice before relying on this calculator for admission planning. Values produced here are estimates for self-assessment; the official SSLC grade is the one printed on the state-board-issued marksheet. Last verified: 2026-05-26.