IGCSE Percentage To Grade Calculator - Convert Marks to 9-1
The IGCSE percentage to grade calculator turns your Cambridge percentage uniform mark into a 9-1 grade, a clear A* to G equivalent, and a note on how series boundaries shift.
IGCSE Percentage To Grade Calculator
Results
What Is IGCSE Percentage To Grade Calculator?
The IGCSE percentage to grade calculator converts the Cambridge percentage uniform mark on your statement of results into a 9-1 grade and shows the old A* to G equivalent beside it. Cambridge IGCSE grades run from 9, the highest, down to 1, with U for unclassified, and this tool answers the question most candidates ask first: what grade does my percentage actually mean?
- • Check a mock or predicted result: If your school shares a percentage uniform mark from a mock, convert it instantly to a likely 9-1 grade before official results day.
- • Explain results to parents: Pair the 9-1 grade with its A* to G equivalent so family members who remember the old scale can follow the outcome.
- • Set a target before exams: Work backwards from the grade you want to the percentage band you need, then plan revision around the gap.
- • Compare subjects at a glance: Convert each subject's percentage into the same 9-1 language so different papers become directly comparable.
This calculator is for the Cambridge International IGCSE, which uses the 9-1 scale introduced alongside the legacy A*-G reporting. It is not a substitute for the certificated grade, because Cambridge sets the real boundaries after marking each series. What it does is give you a fast, consistent read of where your percentage lands on the scale, which is useful for revision planning and for setting realistic goals.
If you instead sit UK GCSEs, the same 9-1 idea applies but the boundaries are set by the English and Welsh exam boards. The GCSE grade calculator handles that syllabus, while this page stays focused on the Cambridge percentage uniform mark.
If you sit UK GCSEs rather than the Cambridge syllabus, the GCSE grade calculator applies the same 9-1 idea to English and Welsh grade boundaries.
How IGCSE Percentage To Grade Calculator Works
The IGCSE percentage to grade calculator applies a simple banding to your percentage uniform mark. Because Cambridge reports results on a common percentage scale, the conversion is a matter of finding which band your number falls into.
- Percentage uniform mark: The candidate's overall percentage uniform mark for the qualification, usually between 0 and 100.
- 9-1 grade: The band the percentage falls into, from 9 (highest) to 1 (lowest), or U for unclassified.
- A* to G equivalent: The legacy Cambridge grade that lines up with the 9-1 band, used for comparison with older results.
The banding mirrors the anchor points Cambridge uses for its A*-G thresholds, which sit at 90, 80, 70, 60, 50, 40, 30 and 20 percentage marks. Placing the 9-1 grades at the same anchor points keeps the two scales aligned, so a 70% lands on grade 7 (an A) and a 40% lands on grade 4 (a C).
Example 1: A strong pass
Enter 82 as the percentage uniform mark.
82 is at least 80 but below 90, so it falls in the grade 8 band. The old equivalent for grade 8 is A*.
Grade 8 (old A*).
An 82% puts you at the top of the A* band, comfortably above the grade 7 line at 70%.
Example 2: A borderline mark
Enter 69 as the percentage uniform mark.
69 is at least 60 but below 70, so it falls in the grade 6 band. The old equivalent for grade 6 is B.
Grade 6 (old B).
Just one mark short of the 70% grade 7 line can move the result down a band, which is exactly where series boundaries matter most.
According to Cambridge International — Cambridge IGCSE, Cambridge IGCSE grades run 9 (highest) to 1 (lowest), with U for unclassified, and results are reported with a percentage uniform mark.
When your percentage comes from weighted coursework and exams, the final grade calculator shows how those pieces combine before you convert to a grade.
Key Concepts Explained
A few terms shape how the IGCSE percentage to grade conversion works, and understanding them keeps the result honest.
Percentage uniform mark
Cambridge's common scale that adjusts raw marks so results from different papers and series combine fairly. It is the value you enter here, not the raw mark from a single paper.
9-1 grade scale
Cambridge's current grading scale where 9 is the highest achievement and 1 the lowest pass, with U for unclassified. It replaced but runs alongside the older A*-G scale.
Grade boundaries
The uniform-mark cut points Cambridge sets for each grade after marking each series. They move slightly year to year, which is why any conversion is an estimate.
A* to G equivalent
The legacy Cambridge grade that lines up with each 9-1 band, letting older results and newer ones be compared on the same subject.
The weighted grade calculator helps if you want to see how individual component percentages pull the total, but the percentage uniform mark you enter already reflects Cambridge's own weighting, so you do not need to recompute it.
The percentage uniform mark is itself a weighting of component scores, so the weighted grade calculator helps you check how each paper pulls the total.
How to Use This Calculator
Using the IGCSE percentage to grade calculator takes under a minute once you have your statement of results.
- 1 Find your percentage uniform mark: Locate the overall percentage uniform mark on your Cambridge statement of results; it is usually shown next to the subject.
- 2 Enter the value: Type the number into the field, including one decimal place if your result shows one, and leave off the % sign.
- 3 Read the 9-1 grade: The calculator shows the band your percentage falls into, from 9 down to U, plus the old A* to G equivalent.
- 4 Check the band edges: Note which boundary you are nearest to, because series movement near a band edge can shift the certificated grade.
- 5 Repeat per subject: Run each subject separately so you build a clear picture of your strongest and weakest grades.
Suppose your Mathematics results slip shows 73%. You enter 73, the calculator returns grade 7 (old A), and you can see you are three points above the grade 6 line at 70% but seven below the grade 8 line at 80%.
For a quick single-subject check before results day, the grade calculator mirrors this conversion without the Cambridge-specific wording.
Benefits of Using This Calculator
Converting your percentage to a grade early pays off in several practical ways.
- • Plan revision with a target: Knowing the percentage band for your goal grade tells you exactly how many more marks you need, which beats vague ambition.
- • Translate the new scale for family: The A* to G equivalent lets parents and carers who remember the old scale follow your progress without a glossary.
- • Spot borderline risk early: Seeing how close you are to a band edge helps you prioritise the topics that could move you up a grade.
- • Compare subjects fairly: Putting every subject into the same 9-1 language makes it easy to see where you are strong and where you are not.
- • Avoid misreading results day: A quick conversion before results are published means the number on the day matches what you already expected.
None of these benefits require you to predict the exact boundary; they all come from understanding where your percentage sits on the scale.
Factors That Affect Your Results
Several things affect how reliable a percentage-to-grade estimate is, and the calculator is built to be honest about them.
Series-to-series boundary movement
Cambridge resets grade boundaries after each series, so the same percentage can sit on a slightly different grade from one year to the next.
Core versus Extended entry
Extended candidates can reach grade 9, while Core candidates are capped below the top grades, which limits the band a given percentage can reach.
Subject difficulty and cohort
Boundaries reflect how the whole cohort performed, so a hard paper one year may lower the cut points compared with an easier year.
Input accuracy
The result is only as good as the percentage uniform mark you type; entering a raw or mock mark by mistake will mislead you.
- • This tool estimates a grade from a percentage uniform mark; it does not issue a certificated Cambridge grade, which is set after marking each series.
- • The banding is an approximation of Cambridge's anchor points and does not capture every subject's exact boundary, so treat results near a band edge as a range.
If a mock paper already gives you a percentage, the test grade calculator can confirm the grade before you feed the number into this tool, which is a useful double check.
Because boundaries are published per series and vary by subject and component, the most accurate read always comes from Cambridge's official grade threshold tables once they are released.
According to Cambridge International — IGCSE grade threshold tables, Grade thresholds are published per series and vary by subject and component.
If a mock paper already gives you a percentage, the test grade calculator can confirm the grade before you feed the number into this tool.
Frequently Asked Questions
Q: What percentage uniform mark do I need for each IGCSE grade?
A: On the banding this calculator uses, 90% and above is a grade 9, 80% a grade 8, 70% a grade 7, 60% a grade 6, 50% a grade 5, 40% a grade 4, 30% a grade 3, 20% a grade 2, and 10% a grade 1. Anything below 10% is unclassified (U). These are an approximation of where Cambridge places grade boundaries, not fixed cut scores, so treat them as a planning guide rather than a guarantee.
Q: Are IGCSE grade boundaries the same every year?
A: No. Cambridge sets the uniform-mark thresholds for each grade after marking each exam series, based on how the cohort performed and the difficulty of that paper. A mark that earns a grade 7 in one series might sit on a grade 6 boundary in another. That is why any percentage-to-grade estimate should be read as a likely range, especially near a band edge.
Q: How is the IGCSE percentage uniform mark different from my raw mark?
A: Your raw mark is the number of marks you scored on a paper. The percentage uniform mark is Cambridge's common scale, adjusted so marks from different papers and series can be combined fairly into one qualification result. This calculator expects the percentage uniform mark from your statement of results, not the raw marks from a single component.
Q: What is the old A* to G equivalent of my IGCSE percentage?
A: Cambridge still reports an A* to G equivalent alongside the 9-1 scale. The mapping lines up so that grade 9 and 8 both sit at A*, grade 7 at A, grade 6 at B, grades 5 and 4 at C, grade 3 at D, grade 2 at E, grade 1 at F, and U at unclassified. The old A*-G thresholds and the 9-1 bands share the same percentage anchor points, which is why the equivalents track so closely.
Q: Can I use this for both Cambridge Core and Extended papers?
A: Yes. Core and Extended candidates both receive a percentage uniform mark and a 9-1 grade, so the same banding applies. Extended papers simply allow access to the full grade range including grade 9, while Core candidates are capped below the top grades. Enter the percentage uniform mark printed on your results regardless of entry route.
Q: Why does my school's predicted grade look different from this estimate?
A: Schools often predict using mock performance, teacher assessment, and their own judgement of where boundaries will land, which can differ from a straight percentage conversion. This tool only converts the percentage uniform mark you enter. If your school uses predicted or centre-assessed grades, compare the two as separate estimates rather than expecting an exact match.