IB Grade to GPA Calculator

1. Enter each IB subject grade on the 1 to 7 scale, separated by commas.
2. Read your estimated US GPA on the 4.0 scale, the average IB grade and how many subjects were counted.
3. Use it for planning, then confirm with the admissions office of your target college.

Here is what each result means:

IB to GPA conversion restates International Baccalaureate subject grades, marked on a 1 to 7 scale, on the US 4.0 grade point scale that American colleges use. It helps IB students complete US applications that ask for a GPA rather than IB points.

There is no single official formula. Each college recalculates IB grades using its own policy, and many weight Higher Level subjects. This tool uses a widely published average-based mapping to give you a realistic planning figure.

It averages your subject grades on the 1 to 7 scale, then maps that average to the nearest US 4.0 grade point.

1. Add up your subject grades and divide by the number of subjects.
2. Find the band the average falls into, for example 6.0 to 6.49.
3. Read the mapped 4.0 grade point for that band.

If you already study on the US system, average full course grades with the GPA calculator instead.

Suppose your six IB subject grades are 6, 7, 6, 5, 6, 7.

The average is (6 plus 7 plus 6 plus 5 plus 6 plus 7) divided by 6 = 37 / 6 = 6.17. That falls in the 6.0 to 6.49 band, which maps to a US GPA of about 3.7.

Raising one 5 to a 7 would lift the average to 6.5 and the estimate to a 4.0, which shows how a single subject can move the result near a boundary.

This average-based mapping is a common planning estimate. Your target college recalculation is authoritative.

IB reports on more than one scale, which can confuse a US reader.

This tool converts the per-subject 1 to 7 grades, which is the part that maps most cleanly to a 4.0 GPA.

Higher vs Standard Level

Many colleges weight Higher Level subjects, so an HL 6 can count for more than an SL 6.

The College Policy

Each admissions office recalculates IB grades its own way, which changes the mapped GPA.

Which Subjects Are Counted

Some colleges include all subjects, others only academic cores, shifting the average.

US College Applications

Portals that ask for a GPA rather than IB points need a converted figure.

Scholarships

Merit thresholds are often stated as a GPA, so convert your IB grades to check eligibility.

Comparing Offers

Put your IB result on the 4.0 scale to compare with GPA-based cut-offs.

1. Converting the 45-point Total Directly

The diploma total includes core points and does not map cleanly to 4.0. Convert per-subject grades instead.

2. Ignoring HL Weighting

Leaving out Higher Level weighting can understate a strong IB student.

3. Treating the Estimate as Official

Only the college recalculation counts for an application.

4. Averaging with Predicted Grades Mixed In

Keep final grades separate from predicted ones, or label them clearly.

5. Dropping a Subject to Raise the Average

Report all counted subjects; cherry-picking misrepresents your record.

The average and band mapping are applied exactly, but the bands are an estimate, not a college official recalculation.

Average your subject grades on the 1 to 7 scale, then map the average to the 4.0 scale. An average near 7 is about 4.0, around 6 is roughly 3.7, and around 5 is close to 3.0.

An average of 6 maps to about a 3.7 GPA, roughly an A-. A single HL 6 may count for more at colleges that weight Higher Level subjects.

A subject grade of 7 is the top IB mark, and an average near 7 maps to about a 4.0 GPA. Individual colleges may weight it differently.

Yes. The IB diploma is scored out of 45, combining six subjects and up to three core points. That total does not map cleanly to a 4.0 GPA, so convert per-subject grades instead.

Many do. A Higher Level 6 can count for more than a Standard Level 6, so a weighted recalculation can raise your GPA.

No. It is a widely used estimate. Each college recalculates IB grades using its own policy, which is the figure that counts for admission.

Enter the subjects you want counted, usually your six IB subjects. The tool averages whatever grades you provide.

Yes, but label them clearly as predicted. Do not mix predicted and final grades without saying so, as colleges treat them differently.

No. The conversion runs entirely in your browser and nothing you enter is stored or sent anywhere, unless you choose Save, which keeps the result only in this browser.

• IB Diploma Programme (Wikipedia, the 1 to 7 and 45-point scales).
• Academic grading in the United States (Wikipedia, the 4.0 scale).
• Grading systems by country (Wikipedia, cross-country comparison).