Exam Score Calculator

This calculator converts raw exam marks into percentages and maps them to grade boundaries. Enter the marks achieved and the total marks available, and it produces a percentage score, which you can then compare against grade boundaries to determine the grade. The worked example on this page shows the mechanics: 64 marks out of 90 comes to 71.1%, and with a pass mark of 45% (which is 40.5 marks on a 90-mark paper) the result is a pass with 23.5 marks to spare. The calculator also supports pass/fail assessments, which are common in professional qualifications, where you simply need to exceed a set pass mark. Enter your score and the pass mark to see whether you have passed and by what margin.

Grade boundaries vary by qualification type. For GCSEs, graded 9 to 1, typical boundaries might be Grade 9 at 80%+, Grade 7 at 65%+ and Grade 4 (the pass) at 40%+. For A-levels, A* at 80%+, A at 70%+ and B at 60%+ are often quoted. These figures are illustrative, because actual boundaries depend on the exam board, the subject and the year. Boundaries are set per exam paper and move year on year, and on a hard paper they can sit far below the illustrative percentages. A sample from the 2025 Maths Higher tier makes the point: Grade 9 was 197 out of 300 (66%) and Grade 4 was 75 out of 300 (25%). On the Foundation tier the highest grade available is a 5.

The 9 to 1 scale replaced letters, so it helps to know the rough equivalents. Grade 9 goes to the top 5-8% of entrants, and a Grade 8 corresponds roughly to the old A*. Grade 7 is about an A, Grade 6 a high B, and Grade 5 is the 'strong pass', sitting at a low B or high C. Grade 4 is the 'standard pass', roughly a low C, while Grades 3 to 1 cover the old D to G range. A-level grades run from A* (introduced in 2010) down to E, with U, or Unclassified, for anything below the E boundary. Each A-level grade also carries a UCAS Tariff value: A* is worth 56 points, A 48, B 40, C 32, D 24 and E 16. An AS-level, worth 40% of a full A-level, earns 20 points for an A.

University results use a different ladder again. A First Class degree needs 70%+ and goes to roughly the top 30% of graduates. An Upper Second (2:1) covers 60-69% and is the most common outcome, awarded to around 45-50% of graduates, while a Lower Second (2:2) at 50-59% accounts for about 15-20% and a Third at 40-49% for around 3-5%. A mark of 35-39% earns a Pass, an ordinary degree without honours, and anything below 35% is a fail. Some Russell Group degrees apply more rigorous boundaries: an Oxbridge First often requires 70%+ in finals across all papers rather than as an average. Most employers and postgraduate courses ask for a 2:1 as a minimum, which is why the 60% line matters so much.

Many UK qualifications combine several components, and the weightings decide how each mark feeds into the final percentage. GCSE Mathematics has three papers with an equal 33% weighting each. A-level Biology typically weights Paper 1 at 33%, Paper 2 at 33% and Paper 3 at 34%, so effectively equal, whereas A-level Chemistry weights Paper 1 at 37%, Paper 2 at 37% and Paper 3 at 26%. Coursework counts where it applies: English Literature carries 20% non-exam assessment, while most science subjects have no coursework at all. To work out a final percentage by hand, multiply each paper's mark by its weight, add the results, divide by the total of the weights and multiply by 100.

Resits are possible at every level, though the rules differ. GCSEs can be resat an unlimited number of times and the best grade counts, but November exams are only offered in English and Maths. Since 2017 A-levels have been linear, so a resit means retaking the full set of papers rather than a single unit. Private resits cost £40-£80 per subject, while sixth forms usually enter students free of charge. Universities report the best grade on a transcript and apply no penalty for resits, apprenticeship providers and most employers keep no record of the attempts, and a UCAS application simply reports your current best predicted or achieved grades. If you do retake, identify the weak topics specifically and practise them in a targeted way, and bear in mind that a different exam board can sometimes suit you better (moving from AQA to Edexcel, for example).