Singapore Grade Conversion to US GPA
Convert Singapore university grades — NUS, NTU, SMU letter grades and CAP scores — to the US 4.0 GPA scale. Singapore uses a 5.0 CAP scale internally; this tool converts to US standard.
How Singapore's Grading System Works
Singapore's universities use a letter grade system with percentage equivalents, closely aligned with the US grading system. The National University of Singapore (NUS), Nanyang Technological University (NTU), Singapore Management University (SMU), and Singapore University of Technology and Design (SUTD) all use similar grading frameworks based on percentage ranges mapped to letter grades and grade points.
The NUS and NTU grading scale is: A+ (85–100%) = 5.0, A (80–84%) = 5.0, A- (75–79%) = 4.5, B+ (70–74%) = 4.0, B (65–69%) = 3.5, B- (60–64%) = 3.0, C+ (55–59%) = 2.5, C (50–54%) = 2.0, D (45–49%) = 1.5, D+ (45–49%) = 1.0, and F (below 45%) = 0.0. Note that NUS and NTU use a 5.0 GPA scale internally, not a 4.0 scale.
For US GPA conversion purposes, the Singapore percentage grades are typically mapped directly to the standard US 4.0 equivalencies: A (80%+) = 4.0, A- (75–79%) = 3.7, B+ (70–74%) = 3.3, B (65–69%) = 3.0, B- (60–64%) = 2.7, and so on. This conversion is well-accepted by US graduate programs.
Honors classification at NUS and NTU: First Class Honours (CAP 4.50/5.00+), Second Class Upper (CAP 3.50–4.49), Second Class Lower (CAP 3.00–3.49), Third Class (CAP 2.50–2.99), and Pass (below 2.50). CAP stands for Cumulative Average Point on the 5.0 scale.
Conversion Formula
A+ (85–100%) → 4.0 GPA
A (80–84%) → 4.0 GPA
A- (75–79%) → 3.7 GPA
B+ (70–74%) → 3.3 GPA
B (65–69%) → 3.0 GPA
B- (60–64%) → 2.7 GPA
C+ (55–59%) → 2.3 GPA
C (50–54%) → 2.0 GPA
D (45–49%) → 1.0 GPA
F (<45%) → 0.0 GPA
NUS/NTU CAP to US GPA: Multiply CAP by 0.8 (e.g., CAP 4.0 → 3.2 US GPA)
Worked Example
Student: Priscilla, BEng Computer Engineering, NUS
Priscilla's CAP (NUS 5.0 scale) is 4.2/5.0, putting her in Second Class Upper Honours.
4.2 × 0.8 = 3.36 US GPA (approximately 3.3). Her Second Class Upper Honours from NUS, a top-100 global university, is competitive for US master's programs in computer science.