Negative Marking Calculator
Instantly calculate your exact exam score with negative marking — supports JEE, NEET, UPSC, SSC, and any custom ratio.
Your Score
—
—Correct
—Deducted
—Skipped
—Accuracy
—% of Max
—Net Marks
What Is Negative Marking?
Negative marking is a scoring system used in competitive exams where a fraction of marks is deducted for every wrong answer. It is designed to discourage random guessing and reward students who only answer questions they are confident about.
In negative marking exams, a wrong answer costs you — not just the marks you could have gained, but a penalty on top. Knowing the exact formula changes how you approach every question.
The Formula Explained
Our calculator uses the standard formula adopted by UPSC, SSC, JEE, NEET, and most competitive exam bodies:
Final Score = (Correct × Marks/Q) − (Wrong × Marks/Q × Negative Ratio)
Where:
Correct = number of correctly answered questions
Wrong = number of incorrectly answered questions
Marks/Q = marks awarded per correct answer
Negative Ratio = fraction deducted (e.g. 0.33 for JEE/NEET)
Where:
Correct = number of correctly answered questions
Wrong = number of incorrectly answered questions
Marks/Q = marks awarded per correct answer
Negative Ratio = fraction deducted (e.g. 0.33 for JEE/NEET)
Note: Unattempted (skipped) questions carry zero penalty. It is always better to skip than to guess randomly when the negative ratio is high.
Negative Marking Ratios by Exam
| Exam | Marks/Question | Negative Ratio | Deduction |
|---|---|---|---|
| JEE Main | 4 | 1/3 | −1 per wrong |
| NEET | 4 | 1/4 | −1 per wrong |
| UPSC Prelims | 2 | 1/3 | −0.66 per wrong |
| SSC CGL | 2 | 1/4 | −0.5 per wrong |
| JEE Advanced | 4 | 1/4 | −1 per wrong |
| RRB NTPC | 1 | 1/3 | −0.33 per wrong |
How to Use This Calculator
- Select a preset — tap your exam name (JEE, NEET, UPSC, SSC) to auto-fill the marking scheme instantly.
- Enter your answers — fill in Total Questions, Correct Answers, and Wrong Answers.
- Verify the ratio — confirm the Negative Ratio matches your exam, or choose Custom to enter any value.
- Add max marks — enter the exam’s total marks to see your percentage score.
- Click Calculate — your Final Score, deductions, accuracy, and percentage appear instantly.
When Should You Skip a Question?
The break-even point tells you the minimum confidence level needed before attempting a question. If your probability of being correct is lower, skipping is statistically better.
Break-Even Probability = Negative Ratio ÷ (1 + Negative Ratio)
Example (JEE/NEET, ratio = 1/3):
Break-Even = 0.33 ÷ 1.33 ≈ 25%
→ Attempt only if you can eliminate at least 3 of 4 options.
Example (JEE/NEET, ratio = 1/3):
Break-Even = 0.33 ÷ 1.33 ≈ 25%
→ Attempt only if you can eliminate at least 3 of 4 options.
Frequently Asked Questions
For every wrong answer, one-third of the marks per question is deducted. If each question carries 3 marks, a wrong answer costs you −1 mark. Formula: Deduction = Marks/Q × (1/3).
A 0.5 negative ratio means half a mark is deducted per wrong answer for every 1 mark question. Common in UPSC and some bank exams. Enter 0.5 in the Custom Ratio field to calculate.
No. Unattempted questions carry zero penalty in all standard exam formats. Only wrong answers attract deductions.
Yes. Select the UPSC preset (½ ratio) or manually enter 2 marks per question with a 0.33 negative ratio. The calculator handles both GS Paper I and CSAT formats.
JEE Main: +4 for correct, −1 for wrong (ratio 1/4). JEE Advanced: also +4/−1 for single-correct, but some question types carry partial marking or no negative marking. Use the JEE Adv preset for single-correct MCQs.
Enter the Total Max Marks field. The calculator will show your percentage automatically: (Final Score ÷ Max Marks) × 100.