IB Score Calculator Formula

Understand the math behind the ib score calculator. Each variable explained with a worked example.

Use the IB Score Calculator

Formulas Used

Total IB Diploma Score

total_score = subject_total + bonus_points

Average Subject Score

subject_avg = subject_total / 6

HL Total

hl_total = subject1 + subject2 + subject3

Variables

VariableDescriptionDefault
subject1Subject 1 Score (HL)6
subject2Subject 2 Score (HL)5
subject3Subject 3 Score (HL)6
subject4Subject 4 Score (SL)5
subject5Subject 5 Score (SL)6
subject6Subject 6 Score (SL)5
bonus_pointsTOK/EE Bonus Points2
subject_totalDerived value= subject1 + subject2 + subject3 + subject4 + subject5 + subject6calculated

How It Works

How IB Diploma Scoring Works

The IB diploma totals scores from 6 subjects plus bonus points.

Formula

Total Score = Sum of 6 Subject Scores + TOK/EE Bonus

  • Each subject: 1-7 points
  • TOK + Extended Essay: 0-3 bonus points
  • Maximum: 45 points (42 + 3)
  • Minimum for diploma: 24 points
  • HL subjects must total at least 12

    • Worked Example

    Three HL subjects (6, 5, 6), three SL subjects (5, 6, 5), and 2 bonus points.

    subject1 = 6subject2 = 5subject3 = 6subject4 = 5subject5 = 6subject6 = 5bonus_points = 2
    1. 01Subject total = 6 + 5 + 6 + 5 + 6 + 5 = 33
    2. 02HL total = 6 + 5 + 6 = 17 (meets 12+ requirement)
    3. 03Total IB score = 33 + 2 = 35
    4. 04Average subject score = 33 / 6 = 5.5

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