What this calculator does
Use this calculator to explore simple grade curve scenarios, such as adding points or scaling scores to a new top score.
Calculators
Grade Curve Calculator
Use this calculator to explore simple grade curve scenarios, such as adding points or scaling scores to a new top score.
Favorite and recently used calculator links are stored only in your browser as calculator slugs.
Result
Enter values and run the calculator to see your result.
Grade curve formulas
Add points: curved score = min(100, original score + points added). Top score: curved score = original score / original top score x new top score.
These are simplified planning methods. Real curves may use class distributions, instructor judgment, or institution-specific rules.
Step-by-step example
- Original score: 72%
- Original top score: 90%
- New top score: 100%
- Curved score = 72 / 90 x 100 = 80%
- Points gained = 80 - 72 = 8 percentage points
When to use this calculator
- Use it when you want a quick planning estimate before checking your official school system.
- Use it to compare what changes when grades, weights, attendance requirements, or study hours change.
- Use it as a private browser-based tool because inputs are not stored by StudyCalc AI.
Common mistakes
- Mixing points and percentages without converting them first.
- Using the wrong grading scale for your school or country.
- Forgetting that schools may round grades or apply special rules differently.
How to interpret your result
Treat the result as a planning estimate, not an official transcript, school record, admissions conversion, or guarantee of academic outcome.
Grade curve FAQ
What is a grade curve?
A grade curve adjusts scores using a rule chosen by an instructor or institution.
What is add-points mode?
It adds the same number of percentage points to the original score, capped at 100%.
What is top-score mode?
It scales your score based on a new top score, often used when the highest class score becomes 100%.
Is this an official curved grade?
No. It is only a planning estimate because real curve rules vary.
Are my scores saved?
No. Scores are processed in the browser and are not stored.
Real grade curves depend on your instructor or institution. This is only a planning estimate.
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