Convert between letter grades and percentage scores with customizable grading scales
Grade conversion is the process of translating between different grading systems, such as converting a letter grade (A, B+, C-) to a percentage score (90%, 85%, 75%) or vice versa. This is particularly useful for students studying abroad, applying to international universities, or comparing academic performance across different educational systems.
Did you know? Grading systems vary significantly between countries. For example, an "A" in the US typically represents 90-100%, while in the UK it might represent 70-100%, and in Australia it might represent 80-100%.
Select whether you want to convert from letter grade to percentage or percentage to letter grade.
Enter the grade you want to convert - either select a letter grade or enter a percentage.
Select the grading scale that matches your educational system. We support several common systems and also allow custom scales.
See the converted grade and copy it to your clipboard if needed.
| Letter Grade | Standard (US) | Canada | UK | Australia |
|---|---|---|---|---|
| A+ | 97-100% | 90-100% | 70-100% | 85-100% |
| A | 93-96% | 85-89% | 60-69% | 75-84% |
| A- | 90-92% | 80-84% | N/A | N/A |
| B+ | 87-89% | 75-79% | N/A | 70-74% |
| B | 83-86% | 70-74% | 50-59% | 65-69% |
| B- | 80-82% | 65-69% | N/A | N/A |
| C+ | 77-79% | 60-64% | N/A | 60-64% |
| C | 73-76% | 55-59% | 40-49% | 55-59% |
| C- | 70-72% | 50-54% | N/A | N/A |
| D | 60-69% | 50-54% | 30-39% | 50-54% |
| F | 0-59% | 0-49% | 0-29% | 0-49% |
Important: Grading systems can vary significantly between institutions, even within the same country. Always check with your specific institution for their official grading policies.
Grade Point Average (GPA) is a standardized way of measuring academic achievement. It's calculated by:
Different institutions may use different scales (4.0, 5.0, or percentage-based).
Tip: Many universities provide GPA conversion guides for international students applying from different educational systems.
Our calculators use standard weighted average formulas that are widely accepted in academic settings. The accuracy depends on the accuracy of the information you input from your syllabus and gradebook.
This tool focuses on calculating grades within individual courses. For GPA calculations, we recommend using our dedicated GPA Calculator.
You can still use our calculators by converting points to percentages. Divide your earned points by total possible points, then multiply by 100 to get a percentage.
Yes! Our Grade Calculator is 100% free with no registration required. We believe in providing valuable tools to help students succeed.