What percentage is each grade in IGCSE Chemistry?
Grade boundaries change every session, so percentages aren't fixed. Based on the Edexcel June 2026 boundaries for overall (9–1), here's the percentage needed for each grade in Chemistry (4CH1).
| Grade | Min mark | Min percentage |
|---|---|---|
| 9 | 141/180 | 79% |
| 8 | 122/180 | 68% |
| 7 | 103/180 | 58% |
| 6 | 90/180 | 50% |
| 5 | 78/180 | 44% |
| 4 | 66/180 | 37% |
| 3 | 53/180 | 30% |
| 2 | 41/180 | 23% |
| 1 | 29/180 | 17% |
Overall (9–1) · maximum mark 180 · June 2026.
FAQ
What percentage is a 9 in IGCSE Chemistry?
In June 2026 (Overall (9–1)), a 9 needed about 79% (141/180). Boundaries shift slightly each session.
What percentage is a pass (4) in IGCSE Chemistry?
A grade 4 needed roughly 37% in June 2026. Grade 4 / C is generally treated as a standard pass.
Are these IGCSE Chemistry percentages official?
They are derived from the official Edexcel grade threshold tables. Boundaries are set per session, so use these as a guide and confirm with your exam board.