IB To GPA Converter

IB to GPA converter to convert your International Baccalaureate (IB) Diploma total score (typically out of 45) into an estimated GPA on common international scales such as 4.0, 4.3, 5.0, 7.0, and 10.0. This is ideal if you need an IB score to GPA estimate for applications, scholarships, or a quick self-check.

IB To GPA Converter

Target GPA scale (max) Common targets: 4.0 (US unweighted), 4.3, 5.0, 7.0 or 10.0. IB maximum score Standard IB Diploma maximum is 45 (6 subjects × 7 + up to 3 bonus points).

Your IB total score Use your final or predicted IB Diploma total.

Primary GPA conversion

3.38

GPA scale max

4.00

IB score

38.00 / 45.00

Approx. US GPA (4.0)

3.38 / 4.00

Strong performance; typically meets entry requirements for a wide range of institutions.

Approximate letter equivalents

Generic international mappings based on your normalised percentage.

Scheme	Letter / class	Threshold (at least)
US letters (A–F)	B	83.00%
UK classes (First / 2:1 / 2:2 / Third)	First	70.00%
ECTS (A–F/FX)	B	80.00%
AUS (HD/D/CR/P/NN)	D	75.00%

Summary

Your IB score converts to a mid–high GPA. Exact admission decisions always depend on the institution and programme.

How the IB to GPA conversion works

This IB to GPA calculator uses a proportional method:

Normalise IB score to a percentage
(IB Score ÷ IB Max) × 100
Convert percentage to GPA on your chosen scale
(Normalised % ÷ 100) × Target GPA Scale

Because institutions interpret IB results differently, this is an estimate. For official decisions, always follow the conversion rules used by your university or credential evaluator.

Quick examples (IB 45 to GPA / common scores)

These examples show how proportional scaling behaves on a 4.0 scale:

IB Score	IB Max	Normalised %	Estimated GPA (4.0)
45	45	100%	4.00
38	45	84.44%	3.38
30	45	66.67%	2.67

Need the number the other way around? If you already have a GPA and want its equivalent on another scale, use our GPA to CGPA Converter or Percentage to GPA Converter.

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Disclaimer: This IB score to GPA calculator uses proportional scaling plus generic grade-context helpers. Always confirm the official policy used by your school, board, university, or evaluation service.