Chemistry
IB Chemistry is a Group 4 experimental science combining academic study with practical and investigational skills. The IB Chemistry course covers chemical principles underpinning physical environments and biological systems, and is often a prerequisite for medicine and biological sciences at university, across both SL and HL. This IB Chemistry grade calculator helps students predict their final exam score.
Assessment inputs
Enter raw marks below — grades calculate live.
Paper 1
Max 75 marks
Paper 2
Max 90 marks
Individual Investigation
Max 24 marks
More Group 4: Sciences
These related subject routes strengthen the crawl path around this IB group and give students a faster way to compare adjacent subjects.
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Historical grade boundaries
Every published boundary across 12 sessions. Multiple dots per session are timezone variants.
Global grade distribution for HL Chemistry
Based on May 2024 results for HL Chemistry (18,602 candidates).
Best place to gain marks
One mark is worth more in some parts than others. The top items give you the biggest boost to your final score.
1. Individual Investigation
+0.83%final score for 1 mark
20% weight · max 24 marks
2. Paper 2
+0.49%final score for 1 mark
44% weight · max 90 marks
3. Paper 1
+0.48%final score for 1 mark
36% weight · max 75 marks
Common questions about Chemistry
What levels are available for IB Chemistry HL?
Chemistry HL is currently mapped with HL calculator input on calculateIB.
Which syllabus versions are included for IB Chemistry HL?
This page tracks 2 syllabus versions: 2025 to Present, 2016 to 2024.
How are IB Chemistry HL boundaries handled on this page?
The page checks the selected exam session first. If that boundary is unavailable, it falls back to May 2024 and then to the nearest available session, while keeping the fallback local to this subject route.