Calculate your
IGCSE grades.
Free IGCSE grade calculator using five years of Cambridge grade boundary data — weighted, averaged, and mapped to your marks.
How our IGCSE grade calculator works
Select Subjects
Choose from 18 Cambridge IGCSE subjects across sciences, mathematics, humanities, and languages.
Choose Papers
Select your tier (Core or Extended) and the specific papers you are sitting this series.
Enter Marks
Input your estimated raw marks per paper. Component weighting is handled automatically.
See Your Estimate
Receive a grade estimate with a confidence range derived from five years of Cambridge boundaries for your chosen exam session.
IGCSE grade boundaries calculator
built on five years of data.
Cambridge publishes grade threshold documents for three sessions each year — February/March, May/June, and October/November. You pick the session you're sitting, and we use the last five years of that session's boundaries.
Rather than a simple average, recent years carry more weight — so if boundaries have been shifting, your estimate reflects that trend. We also show you the historical range so you can see how stable or volatile a boundary has been.
Component marks are weighted exactly as Cambridge specifies per syllabus. No approximations.