A-Level to Marks Calculator
Calculate the UMS marks equivalent of your A-Level grade — or enter a UMS mark to find your grade. Supports all UMS scale maximums (100, 150, 200), multi-subject calculation, reverse lookup, and a re-mark decision tool. Includes subject-specific grade boundary examples from AQA, Edexcel, OCR, and WJEC.
A* requires UMS 90+ out of 100 — the top 10% of the scale
Grade E minimum is UMS 40 — the lowest mark that earns a pass
One UMS mark can be the difference between grades — know exactly where you stand
A-Level grades are reported alongside UMS (Uniform Mark Scale) marks — a standardised score that remains consistent across different years and exam sittings. Whether you want to know how many UMS marks you need for a particular grade, where your mark sits within your current grade, or whether a re-mark is worth requesting, this calculator covers every scenario. For narrative context and raw-mark theory, read the A-Level to Marks full guide; for UCAS totals see A-Level to UCAS Points, the UCAS Points Calculator, and how to calculate UCAS Points.
UMS Mark Ranges — Full Reference for All Scales
The table below shows the UMS mark range, midpoint, percentage equivalent, GPA equivalent, and classification for every grade across all three common UMS scale maximums (100, 150, 200). Use this table as a quick reference when your A-Level results slip shows your UMS mark and you want to understand exactly where you sit within your grade. Cross-check letter bands with A-Level grade points and the percentage grade calculator when you need coursework-style percentage models.
Scale 100
| Grade | UMS Range | UMS Midpoint | % Equivalent | GPA (4.0) | Classification | Distance to Next Grade |
|---|---|---|---|---|---|---|
| A* | 90–100 | 95 | 90–100% | 4.0 | Outstanding | Maximum — no grade above A* |
| A | 80–89 | 84.5 | 80–89% | 3.7 | Excellent | 1 UMS mark to A* boundary (from UMS 89) |
| B | 70–79 | 74.5 | 70–79% | 3.3 | Very Good | 1 UMS mark to A boundary (from UMS 79) |
| C | 60–69 | 64.5 | 60–69% | 3.0 | Good | 1 UMS mark to B boundary (from UMS 69) |
| D | 50–59 | 54.5 | 50–59% | 2.3 | Satisfactory | 1 UMS mark to C boundary (from UMS 59) |
| E | 40–49 | 44.5 | 40–49% | 2.0 | Pass | 1 UMS mark to D boundary (from UMS 49) |
| U | 0–39 | — | 0–39% | 0.0 | Unclassified | 1 UMS mark to E boundary (from UMS 39) |
Scale 150
| Grade | UMS Range | UMS Midpoint | % Equivalent | GPA (4.0) | Classification |
|---|---|---|---|---|---|
| A* | 135–150 | 142.5 | 90–100% | 4.0 | Outstanding |
| A | 120–134 | 127 | 80–89% | 3.7 | Excellent |
| B | 105–119 | 112 | 70–79% | 3.3 | Very Good |
| C | 90–104 | 97 | 60–69% | 3.0 | Good |
| D | 75–89 | 82 | 50–59% | 2.3 | Satisfactory |
| E | 60–74 | 67 | 40–49% | 2.0 | Pass |
| U | 0–59 | — | 0–39% | 0.0 | Unclassified |
Scale 200
| Grade | UMS Range | UMS Midpoint | % Equivalent | GPA (4.0) | Classification |
|---|---|---|---|---|---|
| A* | 180–200 | 190 | 90–100% | 4.0 | Outstanding |
| A | 160–179 | 169.5 | 80–89% | 3.7 | Excellent |
| B | 140–159 | 149.5 | 70–79% | 3.3 | Very Good |
| C | 120–139 | 129.5 | 60–69% | 3.0 | Good |
| D | 100–119 | 109.5 | 50–59% | 2.3 | Satisfactory |
| E | 80–99 | 89.5 | 40–49% | 2.0 | Pass |
| U | 0–79 | — | 0–39% | 0.0 | Unclassified |
Subject-Specific Raw Mark Grade Boundary Examples
UMS marks are standardised — a UMS of 80 always means grade A regardless of the year. But raw marks (the actual marks on the exam paper) vary each year based on paper difficulty. The tables below show approximate raw mark grade boundaries for popular A-Level subjects from recent exam series. Use these to understand how raw marks on your paper translate to UMS grades. Note: these are approximate figures — exact boundaries are published by exam boards after results day.
AQA — selected recent boundaries (approximate)
Illustrative raw boundaries only — always confirm against your series PDF on aqa.org.uk.
| Subject | Component | Max Raw Marks | Raw Mark for A* | Raw Mark for A | Raw Mark for B | Raw Mark for C | Year (approx) |
|---|---|---|---|---|---|---|---|
| Mathematics | Paper 1 (Pure 1) | 100 | 72 | 62 | 52 | 43 | Recent series |
| Mathematics | Paper 2 (Pure 2) | 100 | 70 | 60 | 51 | 42 | Recent series |
| Mathematics | Paper 3 (Statistics/Mech) | 100 | 68 | 58 | 49 | 40 | Recent series |
| Biology | Paper 1 | 91 | 65 | 58 | 49 | 40 | Recent series |
| Biology | Paper 2 | 91 | 63 | 56 | 47 | 38 | Recent series |
| Chemistry | Paper 1 | 105 | 81 | 72 | 61 | 50 | Recent series |
| Physics | Paper 1 | 85 | 65 | 57 | 48 | 39 | Recent series |
| English Literature | Paper 1 | 75 | 60 | 54 | 46 | 38 | Recent series |
| Psychology | Paper 1 | 96 | 76 | 67 | 57 | 47 | Recent series |
| History | Paper 1 | 90 | 71 | 63 | 53 | 43 | Recent series |
| Economics | Paper 1 | 80 | 63 | 56 | 47 | 38 | Recent series |
| Geography | Paper 1 | 120 | 96 | 85 | 73 | 61 | Recent series |
Edexcel (Pearson) — selected recent boundaries (approximate)
Illustrative raw boundaries — verify on qualifications.pearson.com for your paper code.
| Subject | Paper | Max Raw Marks | A* Boundary | A Boundary | B Boundary | C Boundary |
|---|---|---|---|---|---|---|
| Mathematics | Paper 1 (Pure) | 100 | 74 | 64 | 54 | 44 |
| Further Maths | Core Pure 1 | 75 | 60 | 54 | 46 | 38 |
| Chemistry | Paper 1 | 110 | 86 | 76 | 65 | 54 |
| Biology | Paper 1 | 90 | 70 | 62 | 53 | 44 |
| Physics | Paper 1 | 90 | 70 | 62 | 52 | 43 |
| Business Studies | Paper 1 | 100 | 74 | 65 | 55 | 46 |
| Economics A | Paper 1 | 100 | 75 | 66 | 56 | 47 |
OCR A — selected recent boundaries (approximate)
Illustrative raw boundaries — confirm on ocr.org.uk for your specification.
| Subject | Component | Max Raw Marks | A* | A | B | C |
|---|---|---|---|---|---|---|
| Mathematics | Paper 1 (Pure/Stats) | 100 | 71 | 61 | 51 | 41 |
| Physics A | Paper 1 | 100 | 72 | 62 | 52 | 42 |
| Chemistry A | Paper 1 | 100 | 72 | 63 | 53 | 43 |
| Biology A | Paper 1 | 100 | 68 | 60 | 51 | 42 |
| Computer Science | Component 1 | 140 | 112 | 98 | 84 | 70 |
WJEC
Should You Request a Re-Mark? — Decision Guide
If your UMS mark is close to a higher grade boundary, a re-mark or clerical re-check may be worth requesting. This section explains what re-marks involve, the costs and risks, and how to decide whether one is appropriate for your situation. The calculator in Tab 2 flags automatically when your UMS mark is within 3 marks of a higher grade boundary — use this section to decide what to do next.
What a clerical re-check is. A clerical re-check (also called a script clerical check) verifies that all marks on your paper have been added up correctly and that no pages were missed. It does not involve any re-marking of answers. It is the fastest, cheapest, and lowest-risk option — typically available from your school immediately after results day. Cost: typically 10–20 GBP per component, refunded if your mark changes. Turnaround: typically within 1–2 weeks.
What a re-mark (Priority Re-mark) is. A Priority Re-mark involves an examiner re-reading and re-marking your exam paper. The mark can go up, stay the same, or go down — there is no protection against a lower mark in most cases. If the mark goes down, your grade may be lowered. This is a real risk for papers near the top of a grade band (where there is more room to go down than up). Turnaround: typically 2–4 weeks. Cost: typically 40–60 GBP per component, refunded if your mark changes.
When a re-mark is worth considering. A re-mark is most rational when: your UMS mark is within 3–5 marks of a higher grade boundary, the higher grade would materially change your university application outcome (e.g. you need an A for your offer and you received grade B with UMS 78), the cost of not requesting the re-mark (losing a university place) is significantly higher than the risk (a potentially lower mark), and you have your script returned and have reviewed it with your teacher, who confirms that marks may have been missed or under-awarded.
When a re-mark is not recommended. A re-mark carries genuine risk. Do not request one if: your mark is comfortably within your current grade band (not close to a boundary), you are satisfied with your grade and it does not affect your plans, you have not reviewed your paper with a teacher and confirmed there are likely errors, or the subject relies heavily on subjective marking where different examiners may legitimately award different marks (e.g. essay-based papers in some humanities subjects).
The access to scripts process. Before requesting a re-mark, most schools can apply to the exam board for a copy of your marked script (Access to Scripts service). Reviewing your script with a teacher is the most important step before deciding on a re-mark — it allows you to assess whether marks appear to have been missed or whether the marks awarded seem fair. Access to Scripts is typically available from AQA, Edexcel, OCR, and WJEC at a low cost (5–15 GBP per paper).
Re-mark deadlines. Re-mark requests must be submitted through your school or exam centre — you cannot apply directly to the exam board. There are strict deadlines (typically 3–4 weeks after results day for the main August results). UCAS and universities have processes for accommodating students who are awaiting re-mark outcomes — contact your university's admissions office immediately if you are in this situation.
Within 1 UMS of boundary — Very strong case for re-check and re-mark. Discuss with your school immediately.
Within 2–3 UMS of boundary — Strong case for re-check. Consider re-mark if the grade change is material to your plans.
Within 4–5 UMS of boundary — Moderate case. Request script access and review before deciding.
6+ UMS from boundary — Low probability of grade change. Re-mark generally not recommended unless specific marking errors are identified on script review.
More than 10 UMS below boundary — Re-mark very unlikely to help. Focus on Clearing or alternative options.
UMS Marks vs Raw Marks — How the Conversion Works
What raw marks are. Raw marks are the actual marks awarded on the original exam paper — for example, 54 out of 80, or 72 out of 100. They are the primary output of the marking process. Raw marks vary by paper: the same quality of work may produce a different raw mark on a hard paper (where fewer marks are available) than on an easier paper (where marks are more generous).
What UMS marks are. UMS (Uniform Mark Scale) marks are standardised scores that remain consistent across different years and exam sittings. Raw marks are scaled to UMS after each exam series to account for differences in paper difficulty. A UMS score of 80 always means grade A, regardless of the year. The UMS maximum for most A-Level components is 100 (some use 150 or 200 for longer papers or coursework).
The scaling process. After each exam series, the exam board assembles a team of senior examiners to set raw mark grade boundaries. These boundaries are determined by examining student performance across the cohort and are designed to ensure that the same quality of work earns the same UMS grade each year. Raw marks are then linearly interpolated to UMS scores. A student whose raw mark is exactly at the grade A boundary receives exactly UMS 80. A student halfway between the A and B raw boundaries receives UMS 75. For published UMS-to-percentage reporting conventions, see A-Level to Percentage.
Why you see UMS on your results slip. Your official results slip shows your UMS mark — not your raw mark. UMS marks are what determine your grade and appear in the credential documentation used for university applications. Raw marks are not shown on standard results documents — they require a clerical check request through your school.
How to get your raw marks. If you need your raw marks (for re-mark purposes or personal review), you can: request a clerical re-check through your school (which reveals the raw marks), request Access to Scripts (which shows your marked paper including the marks awarded on each question), or in some cases check the exam board's online portal if your school has enabled this access. Raw marks from previous series are also published in exam board grade boundary documents — these allow you to understand how your raw mark would have been scaled in any given series.
Worked Examples: A-Level Marks Calculations
Step 1. Mathematics A* → UMS range 90–100, midpoint 95, percentage 95%, GPA 4.0.
Step 2. Physics A → UMS range 80–89, midpoint 84.5, percentage 84.5%, GPA 3.7.
Step 3. Chemistry B → UMS range 70–79, midpoint 74.5, percentage 74.5%, GPA 3.3.
Step 4. Multi-subject average UMS = (95 + 84.5 + 74.5) ÷ 3 = 254 ÷ 3 = 84.7 UMS average.
Step 5. Average percentage = 84.7%. Average GPA = (4.0 + 3.7 + 3.3) ÷ 3 = 3.67.
Step 1. Scale 150 grade boundaries — A* = 135–150, A = 120–134, B = 105–119.
Step 2. UMS 122 falls in the A band (120–134).
Step 3. Distance to A* boundary: 135 − 122 = 13 UMS marks to A*.
Step 4. Distance to B boundary: 122 − 105 = 17 UMS marks above B.
Step 5. Percentage equivalent: 122 ÷ 150 × 100 = 81.3%.
Step 6. GPA equivalent: A grade → 3.7.
Step 1. Current grade — UMS 78 = Grade B (70–79).
Step 2. Distance to grade A boundary: 80 − 78 = 2 UMS marks.
Step 3. Distance to grade C boundary: 78 − 60 = 18 UMS marks above C.
Step 4. Re-mark risk assessment: 2 UMS marks needed for grade A. This is a very strong case for requesting a re-check and potentially a re-mark. A gain of 2 UMS requires a relatively small raw mark increase — typically 1–3 raw marks depending on the paper. Risk: the mark could also decrease by 2 UMS to 76, staying in grade B. Risk-benefit: if grade A is needed for a university offer, the potential gain (securing the offer) outweighs the risk (staying at grade B). Recommended: request clerical re-check first; then consider Priority Re-mark if re-check does not change the grade.
Student wants to achieve grade A in Chemistry (UMS scale 100, 3 papers: Papers 1, 2, and Coursework). Paper 1 UMS maximum: 100. Grade A minimum: UMS 80. Paper 2 UMS maximum: 100. Grade A minimum: UMS 80. Coursework UMS maximum: 50. Grade A minimum: UMS 40 (80% of 50). Overall grade A minimum: weighted average across components depends on exam board weighting — assume equal weight for this example. Target: achieve at least UMS 80 across each component where the maximum is 100, and 40 where the maximum is 50.
For Paper 1 (scale 100, estimated raw boundary for A approximately 63 out of 100 from recent series): aim for 65+ raw marks. For Paper 2 (similar): aim for 65+ raw marks. For Coursework (scale 50, grade A = 40 UMS): aim to score at the top of the coursework marking scheme.