WJEC A-Level Biology UMS Analyser & Grade Calculator
Enter your results to calculate your predicted grade, see what you need in remaining units, explore resit options, and analyse mock exam results.
⚙️ UMS Analyser Settings
📝 Your Unit Marks
Enter your marks for completed units. Tick ‘Not taken’ for units you haven’t sat yet.
Unit 1 — Basic Biochemistry & Cell Organisation
AS Level • 20% weightingUnit 2 — Biodiversity & Physiology of Body Systems
AS Level • 20% weightingUnit 3 — Energy, Homeostasis & Environment
A2 Level • 25% weightingUnit 4 — Variation, Inheritance & Options
A2 Level • 25% weightingUnit 5 — Practical Examination
A2 Level • 10% weighting🎯 Target Grade
Select the grade you’re aiming for:
📊 Your Results
What You Need in Remaining Units
| Unit | UMS Needed | Raw Marks (approx) | Percentage | Difficulty |
|---|
💡 Strategic Advice
📋 Recommendations
🔄 Resit Impact Calculator
See how resitting your AS units could improve your position. Enter expected UMS for one or both units:
🔍 Mock Exam Analyser
Enter your mock results to see your current grades, UMS breakdown, and identify where to focus your revision
📝 Enter Your Mock Results
Enter your mock exam results. Leave blank for units you haven’t done a mock for.
Unit 1 — Basic Biochemistry & Cell Organisation
AS Level • Max 80 raw marks • Max 100 UMSUnit 2 — Biodiversity & Physiology of Body Systems
AS Level • Max 80 raw marks • Max 100 UMSUnit 3 — Energy, Homeostasis & Environment
A2 Level • Max 90 raw marks • Max 125 UMSUnit 4 — Variation, Inheritance & Options
A2 Level • Max 90 raw marks • Max 125 UMSUnit 5 — Practical Examination
A2 Level • Max 50 raw marks • Max 50 UMS📊 Your Mock Exam Analysis
| Unit | Your % | Raw Mark | UMS | Grade |
|---|
❓ Frequently Asked Questions
For an A* in WJEC A-Level Biology, you need a total of 400 UMS marks AND at least 270 UMS from your A2 units (Units 3, 4, and 5). This means you need to score 90% across your A2 units.
Your grade is based on your total UMS marks across all 5 units (maximum 500). The grade boundaries are: A* = 400 (plus 270 from A2), A = 400, B = 350, C = 300, D = 250, E = 200. Your raw exam marks are converted to UMS using boundaries set each year.
Consider resitting if your AS average is below 70 UMS per unit and you’re aiming for an A or above. However, resitting means sitting 5 Biology exams in one session, which requires careful time management. Speak to your teacher for personalised advice.
Raw marks are your actual exam score (e.g., 58/80). UMS (Uniform Mark Scale) is a standardised score that allows fair comparison across different exam sessions. Raw mark boundaries change each year based on paper difficulty, but UMS grade boundaries stay the same.
Use the Mock Exam Analyser above. Enter your mock results (as percentage, raw marks, or UMS) for each unit and it will show you the equivalent UMS, the unit grade (a–e), and your overall AS/A-Level grade. This helps you understand where you currently stand and identify areas for improvement before the real exams.
📚 WJEC Biology Grade Boundaries Reference
UMS Grade Boundaries
| Grade | Total UMS Required |
|---|---|
| A* | 400 |
| A | 400 |
| B | 350 |
| C | 300 |
| D | 250 |
| E | 200 |
Note: For A*, you also need at least 270 UMS from your A2 units (Units 3, 4 & 5).
Unit Weightings
| Unit | Level | Max UMS | Weighting |
|---|---|---|---|
| Unit 1 | AS | 100 | 20% |
| Unit 2 | AS | 100 | 20% |
| Unit 3 | A2 | 125 | 25% |
| Unit 4 | A2 | 125 | 25% |
| Unit 5 | A2 | 50 | 10% |
| Total | — | 500 | 100% |
Official Resources
WJEC Mark to UMS Converter — Official interactive boundary lookup tool
WJEC A Level Biology — Official specification, past papers and resources
Follow for More Biology Resources
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Book a Session → Disclaimer: This tool provides estimates based on historical grade boundaries. Actual boundaries vary each year depending on exam difficulty. Always discuss your options with your teacher who can provide personalised guidance.
Copyright Acknowledgement: WJEC, Eduqas and CBAC are registered trademarks of WJEC CBAC Ltd. Grade boundary data referenced on this page is © WJEC CBAC Ltd and is reproduced here solely for non-commercial educational purposes. For official grade boundaries, visit wjec.co.uk.