Ib Biology Sl Grade Calculator
Calculate your IB Biology SL final grade based on internal assessment and external exam scores.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the IB Biology SL Grade Calculator
- Enter your IA score (out of 24) in the Internal Assessment field.
- Enter your Paper 1 score (out of 40), Paper 2 score (out of 50), and Paper 3 score (out of 30) in the respective fields.
- All scores must be numbers between 0 and the maximum shown. Use decimals if needed (e.g., 18.5).
- Click "Calculate Grade". Invalid entries will show red error messages.
- Your Total Weighted Score (as a percentage) and IB Grade (1–7) will appear below.
Weighting Breakdown: IA = 20%, Paper 1 = 20%, Paper 2 = 36%, Paper 3 = 24%.
Previous Results
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Frequently Asked Questions
The final grade is a weighted sum: IA (20%), Paper 1 (20%), Paper 2 (36%), Paper 3 (24%). The total percentage is converted to a 1-7 scale using boundary approximations.
Approximate boundaries: 7 (85-100%), 6 (70-84%), 5 (55-69%), 4 (40-54%), 3 (25-39%), 2 (15-24%), 1 (0-14%). Boundaries may vary slightly by session.
Yes, you can enter decimal scores (e.g., 18.5 out of 24). The calculator will handle them correctly.
