Education • Grades
Grade Curve Calculator
Calculate grade curve and questions needed to pass.
Raw score
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Curve applied
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Boost amount
Curved %
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Curve Method & Formula
Curve = max(0, passing% − actual%). Curved% = min(100, actual + curve).
How to use
- 1Enter the total questions on the exam and the number you answered correctly.
- 2Choose the curve adjustment — for example adding a flat number of points or a set percentage.
- 3See your raw percentage plus the curved score and whether it clears the passing threshold.
Formula
Raw = correct ÷ total × 100 • Curved = min(100, raw + points) or raw × (1 + %curved)The calculator applies the curve to your raw percentage — either adding a fixed number of points or scaling by a percentage — and caps the result at 100%. It also reports how many additional correct answers you'd need to reach a passing score before and after the curve.
Examples
30 questions, 18 correct, +10 points curve
Raw = 60%. Curved = 60 + 10 → 70% (pass).
60% → 70%
50 questions, 24 correct, +5% curve
Raw = 48%. Curved = 48 × 1.05 → 50.4%.
48% → 50.4%
About
The Grade Curve Calculator applies a curve to a raw test score and shows whether the adjusted score passes. Enter the number of questions, your correct answers, and the curve — either a flat point bonus or a percentage scale — to see your raw and curved results. Teachers use curves after difficult exams to bring averages up, and students can check how a proposed curve would change their score before it's announced. The tool also reports how many more correct answers are needed to pass, both before and after the adjustment, so you can see exactly how much the curve helps.
Frequently asked questions
What does it mean to curve a grade?
Curving adjusts raw scores to compensate for a hard test, usually by adding points or scaling percentages upward. The method depends on the teacher's policy.
Is my curved grade capped at 100?
Yes — no curved result exceeds 100%, matching how grades are recorded.