South Korea GPA Conversion Calculator & Grading Scale

Convert Korean 4.5 / 4.3 GPA Scales to US 4.0 GPA

South Korea Grade: A+ (4.50 / 4.30) 95% – 100%
US 4.0 GPA Equivalent
4.00
US Letter Grade
A+
•High Distinction
Converted using standard World Education Services (WES) & UK ENIC credential equivalency scales.
South Korea Conversion Scale
A+ (4.50 / 4.30)95% – 100%
4.0 GPAA+
A0 (4.00)90% – 94%
3.7 GPAA
B+ (3.50)85% – 89%
3.3 GPAB+
B0 (3.00)80% – 84%
3.0 GPAB
C+ (2.50)75% – 79%
2.3 GPAC+
C0 (2.00)70% – 74%
2.0 GPAC
D+ / D0 (1.0–1.5)60% – 69%
1.0 GPAD
F (0.00)< 60%
0.0 GPAF

About South Korea Grading System & US GPA Conversion

South Korean universities (Seoul National, KAIST, Yonsei, Korea University) commonly use a 4.5 or 4.3 maximum GPA scale with letter grades from A+ to F.

Conversion Methodology

National Institute for International Education (NIIED) and Global Korea Scholarship (GKS) standards.

Scoring Standards

A+ (4.5 / 95–100%) = 4.0, A0 (4.0 / 90–94%) = 3.7, B+ (3.5 / 85–89%) = 3.3, B0 (3.0 / 80–84%) = 3.0, C+ (2.5) = 2.3, C0 (2.0) = 2.0, D (1.0) = 1.0, F = 0.0.

Authority References:NIIED Korean Ministry of Education •GKS Official Guidelines

Frequently Asked Questions: South Korea Grades & GPA

How do you convert Korean 4.5 GPA to US 4.0?

Official formula: US GPA = (Korean GPA / 4.5) × 4.0 or table-based band conversion.

Explore All 20 International GPA Scales

Select any country to view official credential evaluation and US 4.0 GPA equivalence tables.

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Academic Calculation Formulas & Frequently Asked Questions

Everything you need to know about calculating college GPA, weighted high school credits, test curves, and final exam scores.

How to Calculate College & Weighted GPA

Your Grade Point Average (GPA) represents the average quality points earned across all credit hours. On a standard unweighted 4.0 GPA scale, grades are assigned fixed values: A (4.0), B (3.0), C (2.0), D (1.0), and F (0.0).

With a weighted GPA calculator, rigorous courses award bonus points: Honors (+0.5 weight, 4.5 max) and AP / IB / Dual Enrollment (+1.0 weight, 5.0 max).

GPA = Σ(Grade Points × Credits) / Total Credits

What Grade Do I Need on My Final Exam?

To calculate the minimum test score needed on your final exam to pass or secure a target letter grade (such as an A or B), determine your current overall class percentage and the final exam weighting.

Use the formula below or enter your grades into our instant final grade calculator to test what-if scenarios in seconds.

Score Needed = [Target - Current × (1 - Weight)] / Weight

How Grade Curve Normalization Works

Professors frequently apply curves to adjust test scores when exam difficulty is unusually high. The Square Root Curve (10 × √Raw Score) is the standard academic method, offering larger point boosts to lower raw scores while fairly rewarding top performers.

Alternatively, linear scaling boosts the highest student score to 100% and scales all submissions proportionately.

Square Root Curve = 10 × √(Raw Score)

International Credential & WES GPA Scales

When applying for US university admissions or study abroad programs, international grading systems require conversion. UK First-Class Honours (70%+) equates to a 4.0 US GPA. Indian 10-point CGPA systems convert via official university division boundaries.

German grades use the Modified Bavarian Formula where 1.0 (Sehr Gut) translates to a 4.0 GPA.

Standard WES & UK ENIC alignedRead Full Guide