IGCSE Chemistry (0620)
Cambridge IGCSE (CAIE). Estimate your grade, check grade boundaries by exam session, and see the percentage needed for each grade.
Chemistry grade calculator
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Estimated grade
Show grade thresholds for this option
| Grade | Min mark | Min % |
|---|
Pick the tier and paper variant you sat. Boundaries differ between Core and Extended and between paper variants (exam zones), so choose the option that matches your papers. Spot a wrong number? Report it.
Percentage needed for each grade
June 2026 · Extended · Papers 21, 41, 51 · max 200.
| Grade | Min mark | Min % |
|---|---|---|
| A* | 173 | 87% |
| A | 147 | 74% |
| B | 119 | 60% |
| C | 91 | 46% |
| D | 78 | 39% |
| E | 66 | 33% |
| F | 53 | 27% |
| G | 40 | 20% |
Chemistry grade boundaries by session
- Chemistry grade boundaries — June 2026 · 17 options
- Chemistry grade boundaries — March 2026 · 4 options
- Chemistry grade boundaries — November 2025 · 11 options
- Chemistry grade boundaries — June 2025 · 12 options
- Chemistry grade boundaries — March 2025 · 4 options
- Chemistry grade boundaries — June 2024 · 11 options
- Chemistry grade boundaries — March 2024 · 4 options