UK Exam Tool

Grade Boundary CalculatorGCSE/IGCSE/A-Level

Convert marks to grades instantly — with official boundaries for OCR, AQA, and Edexcel.

Marks to Grade Converter

Important: Grade boundaries change annually

Official grade boundaries are set by exam boards after each exam series. For the most accurate results, use the "Use custom boundaries" option with your official exam board data.

How Grade Boundaries Work

Grade boundaries determine the minimum marks needed to achieve each grade. They're not fixed percentages but are set by exam boards after each exam series to ensure fairness and maintain grade standards.

Raw marks are your actual marks. These may be scaled to account for paper difficulty, then compared against grade boundaries to determine your final grade.

Key Points:

  • • Boundaries change each year based on paper difficulty
  • • Different boards may have different boundaries
  • • Higher boundaries = harder paper (or higher standards)
  • • Always check your exam board's official boundaries

Examples

GCSE Example

Computer Science, OCR 2024, 100 marks maximum

75 marks: Grade 8 (75% - Strong performance)

65 marks: Grade 7 (65% - Good performance)

45 marks: Grade 5 (45% - Strong pass)

A-Level Example

Mathematics, AQA 2024, 300 marks maximum

231 marks: Grade A (77% - Excellent performance)

201 marks: Grade B (67% - Good performance)

141 marks: Grade D (47% - Pass performance)

Boards & Qualifications Covered

OCR

  • • GCSE (9-1 scale)
  • • A-Level (A*-E scale)
  • • Computer Science, Maths

AQA

  • • GCSE (9-1 scale)
  • • IGCSE (A*-G scale)
  • • A-Level (A*-E scale)
  • • Multiple subjects

Edexcel

  • • GCSE (9-1 scale)
  • • IGCSE (A*-G scale)
  • • A-Level (A*-E scale)
  • • Pearson qualifications

Important Notice

Boundaries can vary by series and component. Always check your school/exam board for the official figures. This tool provides estimates based on historical data.

Frequently Asked Questions

Grade boundaries change each year to ensure fairness and maintain standards. They are adjusted based on the difficulty of the exam paper and candidate performance. Harder papers typically have lower boundaries, while easier papers have higher boundaries.

No, different exam boards (OCR, AQA, Edexcel) set their own grade boundaries. They may vary slightly even for similar subjects. Always check with your specific exam board for the most accurate information.

For subjects with multiple papers, you typically need to combine your marks from all papers and use the total maximum marks for grade boundary lookup. The boundaries are usually set for the overall qualification total.

Raw marks are your actual marks. Scaled marks adjust for difficulty differences between papers. UMS (Uniform Mark Scale) is used for modular qualifications to standardize marks across different papers and years.

Yes, if your specific exam series isn't available in our database, you can enter custom grade boundaries as percentages to calculate your grade. This is useful for newer exam series or less common subjects.

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