IB predicted grade calculator

Enter the marks you have so far to see your predicted grade in each IB subject, what you need on the papers you haven't sat, and your diploma points out of 45.

Free, no account needed. Updated for the November 2026 and 2027 exams.

Your subjects

Exams in
1 of 6 subjects

Theory of knowledge and extended essay

Together they add up to 3 points to your total.

Out of 30, with the essay counted twice. About 22 is a A, 16 is a B, 10 is a C, 4 is a D. Get a mark for your TOK essay

Marked out of 30 from May 2027. Its grade boundaries are set after the first session.

Predicting your EE grade? Get a mark for your EE

Your IA is the part you can still change

Coursework is often 20 to 25% of a subject grade, and it is the one part you can improve before the exam. Marksy gives your draft a mark for each criterion and shows which sentences are costing you marks.

  • See which criterion is losing you marks
  • Comments tied to your own sentences
  • A short list of what to fix first
Grade my IA
Marksy highlighting the passages behind each IB criterion mark
Each mark points at the sentences behind it.

How it works

  1. 1

    Pick your subjects

    Choose each subject and its level. The papers and coursework match the current subject guide for your exam session.

  2. 2

    Enter the marks you have

    Use mock exams, past paper practice or your IA mark, as marks or percentages. Leave anything you haven't done blank.

  3. 3

    See your grade and what's left

    You get a grade from 1 to 7 and the average you need on the remaining papers for each grade.

  4. 4

    Add TOK and the EE

    Your two core grades add up to 3 points. The total out of 45 is checked against the diploma rules.

Estimated IB grade boundaries

The lowest overall percentage that usually gets each grade, for every subject and level. These are the boundaries the calculator uses.

The IB doesn't publish its boundaries. It sets them after each session, and they move a few percent from year to year as papers get easier or harder. We estimated these from the May 2023 to 2026 sessions, using the middle value for each grade.

Your IB coordinator receives the real boundaries for your session and time zone after results day.

Subject76543
Language and literature
Language A: language and literature HL80%66%54%40%26%
Language A: language and literature SL79%65%51%37%24%
Language A: literature HL80%66%54%40%29%
Language A: literature SL77%64%50%37%26%
Literature and performance SL84%70%56%42%27%
Language acquisition
Language B HL86%71%57%41%26%
Language B SL82%67%50%35%21%
Language ab initio SL80%66%52%37%21%
Individuals and societies
Business management HL73%63%50%38%26%
Business management SL77%65%52%39%28%
Economics HL76%63%50%38%27%
Economics SL75%64%52%40%28%
Geography HL74%64%53%42%29%
Geography SL76%65%52%41%27%
Global politics HL71%58%47%33%20%
Global politics SL69%57%46%34%21%
History HL73%60%49%36%24%
History SL77%63%49%35%25%
Philosophy HL80%68%55%44%31%
Philosophy SL79%67%56%44%30%
Psychology HL (new guide in 2027)73%61%48%35%22%
Psychology SL (new guide in 2027)73%60%49%36%24%
Social and cultural anthropology HL75%63%53%42%27%
Social and cultural anthropology SL81%67%55%42%30%
Digital society HL70%61%52%42%30%
Digital society SL71%61%51%40%28%
Environmental systems and societies HL65%54%43%33%21%
Environmental systems and societies SL66%56%46%36%23%
Sciences
Biology HL76%62%49%36%24%
Biology SL75%61%48%36%24%
Chemistry HL75%63%52%40%26%
Chemistry SL72%60%49%37%27%
Physics HL72%60%47%36%25%
Physics SL67%57%46%35%22%
Computer science HL (new guide in 2027)73%62%53%43%30%
Computer science SL (new guide in 2027)74%62%52%43%26%
Design technology HL (new guide in 2027)69%57%47%36%27%
Design technology SL (new guide in 2027)71%60%51%40%29%
Sports, exercise and health science HL66%56%45%33%22%
Sports, exercise and health science SL66%57%46%36%24%
Mathematics
Mathematics: analysis and approaches HL73%60%47%34%23%
Mathematics: analysis and approaches SL75%59%44%30%19%
Mathematics: applications and interpretation HL70%58%46%34%24%
Mathematics: applications and interpretation SL76%62%48%33%22%
The arts
Visual arts HL (new guide in 2027)81%67%53%39%22%
Visual arts SL (new guide in 2027)81%65%51%34%22%
Music HL81%67%52%39%22%
Music SL77%65%51%38%21%
Theatre HL84%69%52%37%21%
Theatre SL86%70%52%36%20%
Film HL85%70%56%41%29%
Film SL85%70%57%41%27%
Dance HL81%69%61%50%35%
Dance SL83%71%64%53%37%

Questions people ask

Each paper and piece of coursework counts for a fixed share of your subject grade, set in the subject guide. The calculator turns each of your marks into a percentage, weights it by that share, and compares the total with the grade boundaries for your subject and level.

The IB sets new boundaries after every exam session and sends them to schools rather than publishing them. Marksy's boundaries are our own estimates. We collected the boundaries of every May session from 2023 to 2026, checked them against copies of the IB's documents that schools have published, and took the middle value for each grade, rounded to a whole percent. If your school gives you its boundaries, enter them instead.

Leave them blank. The calculator works out your grade from the parts you've entered and shows the average you need on the rest to reach each grade, for example 62% on Paper 2 for a 7.

Each of your six subjects gives 1 to 7 points, up to 42. Theory of knowledge and the extended essay together add up to 3 more, from a table that combines the two grades. That makes 45 in total, and you need at least 24 for the diploma.

Yes. You also need at least 12 points across your HL subjects and 9 across your SL subjects (5 if you take two SL subjects), no grade 1, fewer than three grade 2s, fewer than four grades of 3 or below, no E in TOK or the extended essay, and CAS completed. The calculator checks each of these.

Psychology, computer science, design technology and visual arts have new guides first assessed in May 2027, with different papers and weightings. The extended essay is marked out of 30 instead of 34. Pick 2027 at the top of the calculator to use the new structures.

No. The predicted grades your school sends to universities are your teachers' judgement. This calculator shows where your marks so far would land on typical boundaries, which is a useful way to check your progress and decide where to focus.