Quick Answer
Singapore does not use a single grading scale. Your maximum GPA depends entirely on your school—and using the wrong one can ruin your university applications.
Here is exactly which scale applies to you:
Key systems:
• NUS & NTU: 5.0 CAP scale (A+ / A = 5.0)
• SMU: 4.0 GPA scale (revised from 4.3 in AY2022/23)
• Polytechnics (SP/NP/TP/NYP/RP): 4.0 GPA scale (A = 4.0)
• SIT: 5.0 GPA scale (similar to NUS)
• SUSS: 5.0 GPA scale (with unique grade-point mapping)
• A-Level: Rank Points (max 90) • O-Level: 9-point system
• Formula: GPA/CAP = Σ (Grade Points × Credits) ÷ Σ Credits
• US Conversion (NUS/NTU 5.0): US GPA ≈ CAP ÷ 1.25 • SMU 4.0 translates directly
Use the calculator below to calculate your GPA instantly, or scroll to understand each system in detail.
🎯 Singapore GPA Calculator
Select your institution, add your modules, and see your GPA update instantly.
Plan Your Target Singapore GPA
If you have a specific CAP or GPA goal for Honours, a scholarship, or postgraduate studies, use our Target GPA Planner to calculate the exact grades you need in your remaining modules.
📑 Jump to a Section
What Is Singapore’s GPA System?
Singapore does not use a single, unified GPA system. Instead, the Singapore grading system varies by education level and institution. Different systems are used for secondary schools, polytechnics, and universities—and even among universities themselves.
One common misconception is that all Singapore universities use the same scale. In reality, NUS and NTU use a 5.0 CAP scale, while SMU uses a 4.0 GPA scale (revised from 4.3 in AY2022/23). All five polytechnics (SP, NP, TP, NYP, RP) use a 4.0 GPA scale. Secondary schools use O-Level (9-point) and A-Level (7-point) grading systems.
Key features of Singapore’s grading systems:
- NUS & NTU: 5.0 CAP scale (A+ / A = 5.0, A- = 4.5, etc.)
- SMU: 4.0 GPA scale (A+ / A = 4.0, A- = 3.7, etc.) — revised in 2022
- Polytechnics (SP/NP/TP/NYP/RP): 4.0 GPA scale (A = 4.0, B+ = 3.5, etc.)
- SIT: 5.0 GPA scale (similar to NUS/NTU)
- SUSS: 5.0 GPA scale (with unique grade-point mapping)
- A-Level: Rank Points (max 90) with letter grades A to E
- O-Level: 9-point grading system (A1 to 9)
- Formula: GPA/CAP = Σ (Grade Points × Credits) ÷ Σ Credits
- S/U option: NUS/NTU/SMU allow Satisfactory/Unsatisfactory grading for select modules
Key Insight
Singapore’s grading system is diverse. According to the National University of Singapore (NUS), NUS uses a 5-point CAP scale. Meanwhile, Singapore Management University (SMU) officially moved to a 4.0 scale in AY2022/23. A student moving from polytechnic to university—or between local universities—needs to understand which scale applies to them.
NUS & NTU CAP System: 5.0 Scale
Note: This 5.0 scale applies to NUS and NTU only. SMU uses a separate 4.0 scale (covered in the next section). NUS renamed CAP to GPA in 2023 to align with international standards—they are now the same thing.
NUS and NTU use a 5-point grading scale where A+ and A are both worth 5.0 points. This is the standard system for these two autonomous universities.
NUS / NTU 5.0 Grade Point Scale
| Letter Grade | Grade Points | Percentage Range | Description |
|---|---|---|---|
| A+ / A | 5.0 | 85-100% | Excellent |
| A- | 4.5 | 80-84% | Excellent |
| B+ | 4.0 | 75-79% | Very Good |
| B | 3.5 | 70-74% | Good |
| B- | 3.0 | 65-69% | Good |
| C+ | 2.5 | 60-64% | Satisfactory |
| C | 2.0 | 55-59% | Satisfactory |
| D+ | 1.5 | 50-54% | Marginal Pass |
| D | 1.0 | 45-49% | Minimum Pass |
| F | 0.0 | Below 45% | Fail |
SMU GPA System: 4.0 Scale
Singapore Management University (SMU) uses a 4.0 GPA scale. This is a critical distinction from NUS and NTU, which use a 5.0 scale.
SMU revised its grading system starting Academic Year 2022/23, moving from a 4.3 maximum scale to a 4.0 maximum scale. This change aligns SMU more closely with international grading standards and simplifies conversion for students applying abroad.
SMU 4.0 Grade Point Scale (Effective AY2022/23)
| Letter Grade | Grade Points | Percentage Range | Description |
|---|---|---|---|
| A+ / A | 4.0 | 85-100% | Excellent |
| A- | 3.7 | 80-84% | Excellent |
| B+ | 3.3 | 75-79% | Very Good |
| B | 3.0 | 70-74% | Good |
| B- | 2.7 | 65-69% | Good |
| C+ | 2.3 | 60-64% | Satisfactory |
| C | 2.0 | 55-59% | Satisfactory |
| D+ | 1.7 | 50-54% | Marginal Pass |
| D | 1.0 | 45-49% | Minimum Pass |
| F | 0.0 | Below 45% | Fail |
SMU Conversion Note
Because SMU uses a 4.0 scale, converting to US GPA (also a 4.0 scale) is more direct than converting from NUS/NTU’s 5.0 scale. A 3.5 SMU GPA is roughly equivalent to a 3.5 US GPA—you do not need to divide by 1.25. However, always check with your specific institution for their official conversion policy.
Polytechnic GPA System: 4.0 Scale
All five polytechnics in Singapore (SP, NP, TP, NYP, RP) use a 4.0 GPA scale. This is the same maximum as SMU, but the grade-point mapping differs slightly.
One common misconception is that polytechnic GPA is calculated the same way as university CAP. The polytechnic system uses a 4.0 scale where A = 4.0, B+ = 3.5, B = 3.0, etc., while NUS/NTU use a 5.0 scale.
Polytechnic 4.0 Grade Point Scale
| Letter Grade | Grade Points | Percentage Range | Description |
|---|---|---|---|
| A | 4.0 | 80-100% | Excellent |
| B+ | 3.5 | 75-79% | Very Good |
| B | 3.0 | 70-74% | Good |
| C+ | 2.5 | 65-69% | Satisfactory |
| C | 2.0 | 60-64% | Satisfactory |
| D+ | 1.5 | 55-59% | Marginal Pass |
| D | 1.0 | 50-54% | Minimum Pass |
| F | 0.0 | Below 50% | Fail |
SP’s Elective Exclusion Policy
According to Singapore Polytechnic, from the 2024/2025 academic year, SP students can exclude up to 2 elective modules from their GPA calculation. This is a unique feature that competitors do not cover.
- SGPA (Semester GPA): GPA for one semester
- CGPA (Cumulative GPA): GPA across all semesters
- Elective exclusion: Up to 2 elective modules can be excluded
SIT & SUSS Grading Systems
The Singapore Institute of Technology (SIT) and the Singapore University of Social Sciences (SUSS) use their own grading frameworks, distinct from NUS/NTU and SMU.
SIT GPA System
SIT uses a 5.0 GPA scale, similar to NUS and NTU. Grade point values are comparable: A+ / A = 5.0, A- = 4.5, B+ = 4.0, etc. SIT’s grading policy is designed to align with the local autonomous university standards, making it easier for SIT graduates to apply to NUS/NTU for postgraduate studies.
SUSS GPA System
SUSS also uses a 5.0 GPA scale, but with a slightly different grade-point mapping for certain grades. SUSS students should refer to their official student handbook for exact mapping, but the key distinctions are:
- A+ / A: 5.0
- A-: 4.5
- B+: 4.0
- B: 3.5
- B-: 3.0
- C+: 2.5
- C: 2.0
- D: 1.0 (minimum pass)
- F: 0.0
Always Verify Your Institution’s Official Scale
While SIT and SUSS generally align with the NUS/NTU 5.0 model, minor variations may exist. Always check your institution’s official academic handbook for the most accurate grade-point mapping.
Secondary School Grading (O-Level & A-Level)
According to SEAB (Singapore Examinations and Assessment Board), secondary school students in Singapore sit for the GCE O-Level and A-Level examinations:
GCE O-Level Grading (9-Point System)
| Grade | Marks | Description |
|---|---|---|
| A1 | ≥75% | Distinction |
| A2 | 70-74% | Distinction |
| B3 | 65-69% | Merit |
| B4 | 60-64% | Merit |
| C5 | 55-59% | Pass |
| C6 | 50-54% | Pass |
| D7 | 45-49% | Sub-Pass |
| E8 | 40-44% | Sub-Pass |
| 9 | Below 40% | Fail |
GCE A-Level Grading (7-Point System)
The A-Level uses a 7-point grading system where A is the highest and E is the minimum pass. Students also receive Rank Points (RP) with a maximum of 90 points.
| Grade | Rank Points | Description |
|---|---|---|
| A | 20 | Excellent |
| B | 17.5 | Very Good |
| C | 15 | Good |
| D | 12.5 | Satisfactory |
| E | 10 | Minimum Pass |
| S | 0 | Sub-Pass |
| U | 0 | Fail |
A-Level Rank Points (RP)
A-Level students receive Rank Points (RP) based on their H1 and H2 subject grades. The maximum RP is 90. This is used for university admissions in Singapore and is equivalent to GPA.
Singapore GPA to US GPA Conversion
Converting Singapore GPA to US GPA depends on which system you are using. Here is a guide:
NUS / NTU / SIT / SUSS (5.0) to US GPA (4.0)
Approximate Formula: US GPA = Singapore CAP ÷ 1.25
| Singapore CAP (5.0) | US GPA (4.0) | US Letter Grade | Singapore Classification |
|---|---|---|---|
| 4.5 – 5.0 | 3.6 – 4.0 | A / A- | First Class Honours |
| 4.0 – 4.4 | 3.2 – 3.5 | B+ / B | Second Upper (2:1) |
| 3.5 – 3.9 | 2.8 – 3.1 | B- / C+ | Second Lower (2:2) |
| 3.0 – 3.4 | 2.4 – 2.7 | C | Third Class Honours |
| 2.0 – 2.9 | 1.6 – 2.3 | C- / D | Pass |
| 0.0 – 1.9 | 0.0 – 1.5 | F | Fail |
SMU & Polytechnic (4.0) to US GPA
Since both SMU and polytechnics use a 4.0 scale, the conversion to US GPA (also 4.0) is more straightforward. However, grade-point mapping differences mean it is not a perfect 1:1 match.
| Singapore GPA (4.0) | US GPA (4.0) | US Letter Grade |
|---|---|---|
| 3.5 – 4.0 | 3.5 – 4.0 | A |
| 3.0 – 3.4 | 3.0 – 3.4 | B+ / B |
| 2.5 – 2.9 | 2.5 – 2.9 | B- / C+ |
| 2.0 – 2.4 | 2.0 – 2.4 | C |
| 0.0 – 1.9 | 0.0 – 1.9 | D / F |
Important: Conversion Is Not Exact
Any conversion is an estimate—different universities may interpret Singapore grades differently. Always check with your specific institution for their official conversion policy.
Singapore GPA to UK Degree Classification
Many Singapore students apply to UK universities, which use a different classification system. Here is how Singapore GPA/CAP typically converts to UK Honours classifications:
| UK Classification | NUS/NTU CAP (5.0) | SMU / Poly GPA (4.0) | Typical UK Percentage |
|---|---|---|---|
| First Class Honours | 4.5 – 5.0 | 3.6 – 4.0 | ≥70% |
| Upper Second (2:1) | 4.0 – 4.4 | 3.2 – 3.5 | 60-69% |
| Lower Second (2:2) | 3.5 – 3.9 | 2.8 – 3.1 | 50-59% |
| Third Class Honours | 3.0 – 3.4 | 2.4 – 2.7 | 40-49% |
| Pass | 2.0 – 2.9 | 1.6 – 2.3 | Below 40% |
Important: UK Conversions Vary by University
UK universities may use different conversion benchmarks. Always check the specific entry requirements for the UK university and course you are applying to.
Singapore GPA to Percentage Conversion
Here is how Singapore GPA converts to percentage:
| Singapore Grade | NUS/NTU CAP (5.0) | SMU / Poly GPA (4.0) | Approx. Percentage |
|---|---|---|---|
| A+ / A | 5.0 | 4.0 | 85-100% |
| A- | 4.5 | 3.7 | 80-84% |
| B+ | 4.0 | 3.5 / 3.3 | 75-79% |
| B | 3.5 | 3.0 | 70-74% |
| C+ | 2.5 | 2.5 / 2.3 | 60-64% |
| C | 2.0 | 2.0 | 55-59% |
| D | 1.0 | 1.0 | 45-49% |
| F | 0.0 | 0.0 | Below 45% |
Degree Classification in Singapore
Honours degrees in Singapore are classified based on CAP/GPA. Note the differences between NUS/NTU (5.0) and SMU (4.0):
| Degree Classification | NUS/NTU CAP (5.0) | SMU GPA (4.0) | US GPA Equivalent |
|---|---|---|---|
| First Class Honours | 4.5 – 5.0 | 3.6 – 4.0 | 3.6 – 4.0 |
| Second Upper (2:1) | 4.0 – 4.4 | 3.2 – 3.5 | 3.2 – 3.5 |
| Second Lower (2:2) | 3.5 – 3.9 | 2.8 – 3.1 | 2.8 – 3.1 |
| Third Class Honours | 3.0 – 3.4 | 2.4 – 2.7 | 2.4 – 2.7 |
| Pass | 2.0 – 2.9 | 1.6 – 2.3 | 1.6 – 2.3 |
Minimum GPA/CAP to Graduate in Singapore
Each university has a minimum CAP/GPA requirement to graduate. Dropping below this threshold may result in academic probation or dismissal.
| Institution | Minimum GPA/CAP to Graduate | Notes |
|---|---|---|
| NUS | 2.0 | Minimum CAP for graduation |
| NTU | 2.0 | Minimum CGPA for graduation |
| SMU | 2.5 | Minimum GPA for graduation (4.0 scale) |
| SIT | 2.0 | Minimum GPA for graduation |
| SUSS | 2.0 | Minimum CGPA for graduation |
| Polytechnics | 1.0 – 2.0 | Varies by polytechnic; check your student handbook |
Important: Academic Probation
Falling below these minimums often triggers academic probation. If you do not raise your GPA within the stipulated timeframe, you may be dismissed from the program. Always check your institution’s specific academic standing policies.
Worked GPA Calculation Examples
Here are two realistic examples showing how to calculate your GPA/CAP step-by-step using the formula:
Formula: GPA = Σ (Grade Points × Credits) ÷ Σ Credits
Example 1: NUS Semester Calculation (5.0 Scale)
Modules Taken:
- Module A: 4 credits, Grade = A (5.0) → Grade Points = 5.0 × 4 = 20.0
- Module B: 3 credits, Grade = B+ (4.0) → Grade Points = 4.0 × 3 = 12.0
- Module C: 2 credits, Grade = A- (4.5) → Grade Points = 4.5 × 2 = 9.0
- Module D: 3 credits, Grade = B (3.5) → Grade Points = 3.5 × 3 = 10.5
Step 1: Sum of (Grade Points × Credits)
20.0 + 12.0 + 9.0 + 10.5 = 51.5
Step 2: Sum of Credits
4 + 3 + 2 + 3 = 12
Step 3: Divide
51.5 ÷ 12 = 4.29 CAP (NUS 5.0 scale)
Example 2: Polytechnic Semester Calculation (4.0 Scale)
Modules Taken:
- Module A: 3 credits, Grade = A (4.0) → Grade Points = 4.0 × 3 = 12.0
- Module B: 4 credits, Grade = B+ (3.5) → Grade Points = 3.5 × 4 = 14.0
- Module C: 2 credits, Grade = B (3.0) → Grade Points = 3.0 × 2 = 6.0
- Module D: 3 credits, Grade = C+ (2.5) → Grade Points = 2.5 × 3 = 7.5
Step 1: Sum of (Grade Points × Credits)
12.0 + 14.0 + 6.0 + 7.5 = 39.5
Step 2: Sum of Credits
3 + 4 + 2 + 3 = 12
Step 3: Divide
39.5 ÷ 12 = 3.29 GPA (Polytechnic 4.0 scale)
Pro Tip
Use the calculator at the top of this page to avoid manual math errors—especially when calculating cumulative GPA across multiple semesters.
How to Raise Your GPA in Singapore
Struggling with a low GPA? Here are actionable strategies to improve your academic standing:
- 1. Use S/U (Satisfactory/Unsatisfactory) Options Wisely: NUS, NTU, and SMU allow you to take a limited number of modules on an S/U basis. These do not affect your GPA. Use them for modules outside your major that you find challenging.
- 2. Prioritize High-Credit Modules: A 4-credit module impacts your GPA more than a 2-credit module. Allocate more study time to higher-credit courses.
- 3. Consider Module Retakes (If Allowed): Some universities allow you to retake a failed module to replace the grade. Check your institution’s policy—this can significantly boost your GPA.
- 4. Seek Academic Support Early: Don’t wait until finals. Use university resources like peer tutoring, writing centers, and office hours. Early intervention prevents grade deterioration.
- 5. Strategically Plan Your Course Load: Balance difficult core modules with lighter electives each semester. This prevents burnout and keeps your GPA stable.
Target GPA Planner
If you know your target GPA, use our Target GPA Planner above to calculate the exact grades you need in your remaining modules to hit your goal.
Distinction Grade & Highest GPA in Singapore
Distinction Grade by Education Level
What constitutes a distinction grade in Singapore varies by education level:
| Education Level | Distinction Grade | What It Means |
|---|---|---|
| NUS & NTU | A+ / A (5.0) | Excellent performance |
| SMU | A+ / A (4.0) | Outstanding performance |
| Polytechnic | A (4.0) | Outstanding performance |
| A-Level | A | Highest grade |
| O-Level | A1 | Top grade (≥75%) |
Highest GPA in Singapore
The highest GPA in Singapore depends on the system:
| System | Maximum | How to Achieve |
|---|---|---|
| NUS / NTU | 5.0 | A+ / A in all modules |
| SMU | 4.0 | A+ / A in all modules |
| Polytechnic | 4.0 | A in all modules |
| A-Level | 90 RP | All As in H1/H2 subjects |
| O-Level | 9 points | All A1s |
What Is a Good GPA in Singapore?
A good GPA in Singapore depends on your goals:
| System | Good | Very Good | Excellent |
|---|---|---|---|
| NUS/NTU (5.0) | 3.5 – 4.0 | 4.0 – 4.4 | 4.5 – 5.0 |
| SMU (4.0) | 2.8 – 3.2 | 3.2 – 3.5 | 3.6 – 4.0 |
| Polytechnic (4.0) | 2.5 – 3.0 | 3.0 – 3.4 | 3.5 – 4.0 |
Scholarship and Graduate School Thresholds
- 4.5+ (NUS/NTU): First Class Honours — competitive for scholarships and top graduate programs
- 4.0 – 4.4 (NUS/NTU): Second Upper (2:1) — required for most graduate programs
- 3.6+ (SMU): First Class equivalent — competitive for scholarships
- 3.8+ (Polytechnic): Competitive for NUS/NTU/SMU admission
- 3.0+ (Polytechnic): Minimum for many university programs
❓ Frequently Asked Questions
🎓 What GPA do I need for NUS/NTU/SMU? ▼
Competitive courses typically require 3.8+ (on the 5.0 scale) for NUS/NTU. Most courses require 3.5+. For polytechnic students, a 3.8+ GPA is often required for NUS/NTU/SMU admission. SMU uses a 4.0 scale—a 3.5 SMU GPA is roughly equivalent to a 4.4 NUS CAP.
🔄 How to convert Singapore GPA to US GPA? ▼
For NUS/NTU (5.0): US GPA ≈ CAP ÷ 1.25. For SMU and polytechnic (4.0), the conversion is more direct: 3.5-4.0 ≈ US 3.5-4.0, etc. Always check with your specific institution.
🏆 What is First Class Honours in Singapore? ▼
For NUS/NTU, First Class Honours is awarded for a CAP of 4.5 or above. For SMU, it is awarded for a GPA of 3.6 or above. It is the highest degree classification in Singapore.
📘 What is the difference between CAP and GPA? ▼
NUS renamed CAP to GPA in 2023. They are now the same thing. Students with “NUS CAP” can now refer to it as their “NUS GPA.” The term CAP is still used colloquially to refer to the 5.0 scale.
📊 What is the Singapore GPA system? ▼
Singapore uses multiple GPA systems depending on the education level. NUS & NTU use a 5.0 CAP scale, SMU uses a 4.0 GPA scale, polytechnics use a 4.0 GPA scale, and secondary schools use O-Level (9-point) and A-Level (7-point) systems.
🏆 What is the highest GPA in Singapore? ▼
The highest GPA in Singapore depends on the system: NUS/NTU (5.0), SMU (4.0), Polytechnic (4.0), A-Level (90 Rank Points), O-Level (9 points). Achieving the maximum requires earning the highest grade in every module/subject.
⭐ What is distinction grade in Singapore? ▼
A distinction grade in Singapore varies by level: NUS/NTU A+/A (5.0), SMU A+/A (4.0), Polytechnic A (4.0), A-Level A, O-Level A1. Distinction grades are required for competitive scholarships and honours programs.
📊 What is SP GPA? ▼
SP uses a 4.0 GPA scale with sGPA (Semester) and CGPA (Cumulative). From 2024/2025, students can exclude up to 2 elective modules from their GPA.
📘 What is the S/U grading option? ▼
The S/U (Satisfactory/Unsatisfactory) grading option allows students to take modules without affecting their CAP/GPA. A “S” means pass (no grade points), while a “U” means fail (also no grade points). This can be a strategic way to protect your GPA.
🧮 How is GPA calculated in Singapore? ▼
GPA/CAP is calculated using the formula: GPA = Σ (Grade Points × Credits) ÷ Σ Credits. Each institution has its own grade point values (NUS/NTU: 5.0 scale, SMU/Polytechnic: 4.0 scale). See our worked examples above for a step-by-step demonstration.
Complete GPA Toolkit
Explore our free calculators and guides for every GPA need:
- How to Calculate GPA – The universal step‑by‑step guide
- Free GPA Calculator – Semester, cumulative, and major GPA
- What is GPA? – Meaning and importance
- GPA Formula – The math behind every calculation
- GPA to Percentage Converter
- Percentage to GPA Converter
- GPA Scales Explained (4.0, 5.0, 10.0)
- College GPA Guide
- High School GPA Guide
- Graduate School GPA Guide
- Semester vs Cumulative GPA
- GPA for Scholarships
- University GPA Requirements
Remember: Singapore’s grading system is diverse. Always verify your specific institution’s GPA scale and use the calculators above to ensure accuracy.
Whether you’re studying at NUS, NTU, SMU, SIT, SUSS, SP, NP, TP, NYP, RP, or preparing for the A-Levels, understanding your specific grading system is the first step to academic success in Singapore.
Have more questions? Explore our complete library of GPA guides for every topic you need.
Christian Chinonso is the founder of LearnViaHub, with 6+ years of research experience in international education — including GPA systems, scholarships, student financing, and study-abroad guidance — for students worldwide.