IGCSE Grade Calculator
Enter your raw marks and get an instant predicted grade — with full boundary breakdowns for every subject, board and session.
Select Your Exam Board
Which examination board are you calculating grades for?
What Is an IGCSE Grade Calculator?
An IGCSE Grade Calculator estimates the final grade a student may receive after entering marks for each exam paper or component. Instead of treating every paper equally, a good calculator uses each paper’s total marks and weighting percentage to estimate the student’s weighted score.
This calculator is useful for Cambridge IGCSE, Pearson Edexcel International GCSE, and other IGCSE-style courses when you want a quick grade estimate before official results are released.
How IGCSE Grades Are Calculated
IGCSE grades are usually calculated by combining marks from different papers or components. Each component may have a different weighting, so a paper worth 40% of the final grade affects the result more than a paper worth 20%.
Weighted contribution = (marks scored ÷ total marks) × paper weighting
After all weighted paper contributions are added together, the final weighted percentage is compared with the selected grade scale or official grade-boundary table.
Raw Marks vs Weighted Marks
Raw marks are the actual marks scored on a paper. For example, 62 out of 80 is a raw score. Weighted marks adjust that paper score according to how much the paper contributes to the final qualification.
For example, if Paper 1 is worth 40% of the final grade, then your score on that paper contributes up to 40 percentage points to the final weighted result.
IGCSE Grade Boundaries Explained
Grade boundaries are the minimum marks needed for each grade in a particular exam series. They can change from one session to another because papers vary in difficulty and awarding bodies set boundaries after marking.
That is why an A* or grade 9 is not always the same fixed percentage every year. The official boundary depends on the board, subject, syllabus, tier or route, paper combination, and exam session.
Cambridge IGCSE vs Edexcel International GCSE
Cambridge IGCSE and Pearson Edexcel International GCSE are both international qualifications, but they may use different syllabuses, paper structures, assessment routes, and grade-boundary documents.
| Feature | Cambridge IGCSE | Edexcel International GCSE |
|---|---|---|
| Common grading | A*–G or 9–1 depending on syllabus entry | Usually 9–1 for many current International GCSE qualifications |
| Boundaries | Published by exam series and syllabus/component combination | Published by exam series and qualification |
| Calculator mode | Best with official Cambridge threshold data for the exact syllabus | Best with official Pearson Edexcel grade-boundary data |
A*–G vs 9–1 Grading
Some IGCSE subjects use the traditional A*–G grading scale, while others use the numeric 9–1 scale. On the numeric scale, 9 is the highest grade. On the letter scale, A* is the highest grade.
Common pass reference: C
Lowest listed grade: G
Below G: U or ungraded
Common pass reference: 4 or 5 depending on context
Lowest listed grade: 1
Below 1: U or ungraded
How to Use the Calculator
- Select your exam board, such as Cambridge IGCSE or Pearson Edexcel International GCSE.
- Select your subject and grading scale.
- Add each paper or component as a separate row.
- Enter your marks scored and total marks for each paper.
- Enter the weighting percentage for each paper.
- Check that total weightings add up to 100%.
- Choose official-boundary mode if you have uploaded or selected official thresholds.
- Use generic estimate mode if no official boundary table is available.
IGCSE Grade Example
Suppose a student takes three papers:
| Paper | Marks Scored | Total Marks | Weighting | Weighted Contribution |
|---|---|---|---|---|
| Paper 1 | 62 | 80 | 40% | 31.0% |
| Paper 2 | 54 | 70 | 35% | 27.0% |
| Coursework / Component 3 | 38 | 50 | 25% | 19.0% |
The estimated final weighted percentage is 77.0%. The grade then depends on the selected grade scale and the relevant grade-boundary table.
FAQs
What is an IGCSE Grade Calculator?
It is a tool that estimates your IGCSE grade from marks, paper totals, paper weightings, and a selected grading scale or grade-boundary table.
How are IGCSE grades calculated?
IGCSE grades are calculated by combining marks from the required papers or components, applying the correct weightings, and comparing the final mark with grade boundaries.
Is IGCSE graded A*–G or 9–1?
It can be either, depending on the exam board, syllabus, subject, and entry route. Always check the exact syllabus code and grading scale for your exam entry.
What percentage is an A* in IGCSE?
There is no single fixed percentage for an A*. The percentage needed can change by subject and exam session because official grade boundaries are set after marking.
Do grade boundaries change every year?
Yes. Grade boundaries can change between exam series because papers differ in difficulty and awarding bodies adjust thresholds after reviewing candidate performance.
What is the difference between raw marks and weighted marks?
Raw marks are the marks you score on a paper. Weighted marks show how much that score contributes to the final grade after applying the paper’s weighting.
Can I use this for Cambridge IGCSE?
Yes. Use the Cambridge IGCSE option and select the correct subject, syllabus, grading scale, and official threshold mode if you have the relevant threshold data.
Can I use this for Edexcel International GCSE?
Yes. Use the Pearson Edexcel International GCSE option and compare your result with the correct official grade-boundary document when available.
Is this calculator official?
No. It is an educational estimate unless it uses official grade boundaries for the exact exam board, subject, syllabus, component combination, and exam session.