Calculate your exam score with negative marking using the number of correct, incorrect, and unattempted questions. Enter your marking scheme to find your total marks, deducted marks, and answer accuracy. Use the calculator for NEET, JEE Main, UPSC, MAT, and other competitive examinations with standard or custom marking rules.
How to Use the Negative Marking Calculator
Follow these steps to calculate your exam score:
- Choose a calculation method: Select Quick Calculate to enter your exam details manually, or open Exam Presets and select an available examination to load its marking scheme automatically.
- Enter the total questions: In Quick Calculate, enter the total number of questions in your exam paper. Selecting an exam preset automatically fills this value where a preset is available.
- Enter your attempted and correct answers: Enter the number of questions you attempted and the number you answered correctly. The calculator automatically determines your wrong answers by subtracting correct answers from attempted questions. Use Edit to enter a different wrong-answer count when needed. Any remaining attempted answers are treated as unscored/void, excluded from the maximum marks, and excluded from the accuracy calculation.
- Set the marking scheme: Enter the marks awarded for each correct answer. Select 1/4, 1/3, 1/2, or 1/5 of the correct-answer marks as the wrong-answer penalty, or choose Custom to enter an exact deduction. Select No Negative Marking if incorrect answers carry no penalty.
- Calculate your score: Click Calculate Score to view your final marks, positive marks, deducted marks, unattempted questions, and accuracy percentage. You can also copy or print your results.
Important: Correct answers cannot exceed attempted questions, and correct plus wrong answers cannot exceed attempted questions. In automatic mode, wrong answers equal attempted minus correct. If you manually enter fewer wrong answers, the difference is treated as unscored/void—not as unanswered—and excluded from the maximum marks and accuracy calculation. Unattempted questions are calculated as total questions minus attempted questions. Always verify a preset against the official rules for your examination, paper, and year.
What Is Negative Marking?
Negative marking is an examination scoring system in which marks are deducted for incorrect answers. Correct answers earn positive marks, while wrong answers receive a penalty according to the examination's marking scheme. Unattempted questions generally receive zero marks, although some examinations have special rules for unanswered responses.
For example, if an examination awards 4 marks for a correct answer and deducts 1 mark for an incorrect answer:
- Correct answer: +4 marks
- Incorrect answer: −1 mark
- Unattempted question: 0 marks
If a candidate answers 20 questions correctly and gets 5 wrong, the score is:
(20 × 4) − (5 × 1) = 75 marks.
Negative marking is used in several Indian competitive examinations, including NEET, JEE Main, UPSC Civil Services Prelims, and other entrance and recruitment tests. The actual penalty depends on the examination's official marking scheme.
Negative Marking Formula
The standard negative marking calculation formula is:
Final Score = (Correct Answers × Marks per Correct Answer) − (Wrong Answers × Penalty per Wrong Answer)
Where:
- Correct Answers: Number of questions answered correctly.
- Wrong Answers: Number of questions answered incorrectly.
- Marks per Correct Answer: Positive marks awarded for each correct response.
- Penalty per Wrong Answer: Marks deducted for each incorrect response.
Unattempted questions contribute zero when the examination rules specify no penalty for leaving a question unanswered.
Example of the Negative Marking Formula
Suppose a mock test has the following results:
- Total questions: 100
- Correct answers: 65
- Wrong answers: 20
- Unattempted questions: 15
- Marks per correct answer: 4
- Penalty per wrong answer: 1
Step 1: Calculate positive marks.
65 × 4 = 260 marks
Step 2: Calculate penalty marks.
20 × 1 = 20 marks
Step 3: Calculate the final score.
260 − 20 = 240 marks
The candidate's final calculated score is 240 marks.
How to Calculate 1/4 Negative Marking
In a 1/4 negative marking scheme, one-fourth of the marks awarded for a correct answer is deducted for each incorrect answer.
Penalty = Marks per Correct Answer ÷ 4
For example, if each correct answer carries 4 marks:
- Correct answer: +4 marks
- Wrong answer: −1 mark
- Unattempted answer: 0 marks
Suppose you answer 40 questions correctly and 10 incorrectly.
Positive marks = 40 × 4 = 160
Penalty = 10 × 1 = 10
Final score = 160 − 10 = 150 marks.
What Is 0.25 Negative Marking?
0.25 negative marking means that 0.25 marks are deducted for every incorrect answer.
For a marking scheme with +1 for each correct answer and −0.25 for each incorrect answer:
Score = (Correct Answers × 1) − (Wrong Answers × 0.25)
For example, with 50 correct and 20 incorrect answers:
50 − (20 × 0.25) = 45 marks.
A 0.25 penalty is equivalent to one-fourth of a mark. However, the penalty fraction depends on the positive marks assigned to each question.
How to Calculate 1/3 Negative Marking
In a 1/3 negative marking scheme, one-third of the marks assigned to a question is deducted for an incorrect answer.
Penalty = Marks per Correct Answer ÷ 3
For example, if a correct answer carries 3 marks:
- Correct answer: +3 marks
- Wrong answer: −1 mark
- Unattempted answer: 0 marks, where applicable.
Suppose you answer 60 questions correctly and 15 incorrectly.
Positive marks = 60 × 3 = 180
Penalty = 15 × 1 = 15
Final score = 180 − 15 = 165 marks.
For examinations where the penalty is a repeating decimal, retain the exact fraction during calculation and round only the final displayed result.
Negative Marking Rules for Popular Indian Exams
Negative marking rules differ between examinations, papers, question types, and examination cycles. The figures below are common examples, not a verified or exhaustive statement of current exam rules. Confirm the marking scheme and question count in the official notification or information bulletin for your specific paper and year before using a preset.
| Examination | Correct Answer | Wrong Answer | Unattempted |
|---|---|---|---|
| NEET UG (common scheme) | +4 | −1 | 0 |
| JEE Main Paper 1 (check question type and session) | +4 | −1 | 0 |
| UPSC Prelims GS Paper I | +2 | −2/3 | 0 |
| UPSC Prelims CSAT | +2.5 | −5/6 | 0 |
| MAT calculator preset (verify current pattern) | +1 (preset assumption) | −0.25 (preset assumption) | Assumed 0; verify official rules |
| RPSC RAS Prelims (preset estimate) | Approximately +1.333 | Approximately −0.444 | Check official OMR instructions |
Additional examination rules:
- CDS: UPSC specifies a penalty of one-third of the marks assigned to the question for an incorrect answer. The actual marks depend on the applicable paper.
- NDA: UPSC also specifies a one-third penalty for incorrect answers. Use the relevant paper's marks when calculating the score.
- RRB NTPC: The examination scheme specifies a penalty of one-third of the marks assigned to a question for an incorrect answer.
- JEE Advanced: Question types and marking schemes can differ. Check the current year's information brochure before calculating your score.
- RPSC RAS: This calculator's preset estimates a 200-mark paper with 150 questions (about +1.333 per correct answer and a one-third deduction for a wrong answer). It cannot represent every OMR response rule. If the current instructions penalize a completely blank response, count that response as wrong in this calculator; count a correctly marked designated option for an unattempted question as unattempted. Verify the current official instructions—the preset does not model this special case automatically.
Verification note: These examples are for general guidance and are not confirmation of current official rules. Always consult the latest official notification, information bulletin, and examination instructions before relying on a calculated score. The custom marking scheme can be used when an examination is not listed or its rules differ, provided the questions being calculated share the same scoring rule.
How to Calculate Your Exam Accuracy Percentage
Accuracy percentage measures the proportion of scored answers that you answered correctly.
Accuracy Formula:
Accuracy (%) = (Correct Answers ÷ (Correct Answers + Wrong Answers)) × 100
Where:
Scored Questions = Correct Answers + Wrong Answers
If you manually enter fewer wrong answers than attempted minus correct, the remaining attempted answers are treated as unscored/void and are not included in this accuracy calculation.
For example:
- Total questions: 100
- Correct answers: 70
- Wrong answers: 20
- Unattempted questions: 10
Attempted questions = 70 + 20 = 90
Accuracy = (70 ÷ 90) × 100
Accuracy = 77.78%
Accuracy is different from marks percentage. Accuracy measures the proportion of scored answers that are correct, while marks percentage compares your obtained marks with the maximum marks used by the calculator. Unscored/void answers are excluded from both the accuracy denominator and maximum marks. Use our Marks Percentage Calculator to calculate a separate marks percentage.
If there are no scored questions (no correct or wrong answers), accuracy is undefined and the calculator displays N/A. Accuracy is based on scored answers, so it can differ from correct answers divided by all attempted answers when some responses are marked unscored/void.
Worked Examples: Negative Marking Score Calculation
Example 1: NEET Negative Marking Calculation
Suppose a candidate completes a NEET mock test with these results:
- Total questions: 180
- Correct answers: 130
- Wrong answers: 25
- Unattempted questions: 25
- Marking scheme: +4 for correct and −1 for wrong answers.
Calculation:
Positive marks = 130 × 4 = 520
Penalty marks = 25 × 1 = 25
Final score = 520 − 25
Final score = 495 marks
Accuracy = (130 ÷ 155) × 100
Accuracy = 83.87%
Example 2: UPSC Prelims GS Paper I
Suppose a candidate gets 75 questions correct and 25 incorrect in a paper with +2 marks for each correct answer and a one-third penalty for each wrong answer.
- Correct answers: 75
- Wrong answers: 25
- Unattempted answers: 0
- Correct answer marks: +2
- Wrong answer penalty: −2/3
Positive marks = 75 × 2 = 150
Penalty marks = 25 × 2/3 = 16.6667
Final score = 150 − 16.6667
Final score = 133.33 marks (approximately)
Example 3: A +2/−0.5 Marking Scheme
Consider a mock test with +2 marks for each correct answer and −0.5 for each incorrect answer.
- Correct answers: 80
- Wrong answers: 10
- Unattempted answers: 10
Positive marks = 80 × 2 = 160
Penalty marks = 10 × 0.5 = 5
Final score = 160 − 5
Final score = 155 marks
This is a mathematical example using a +2/−0.5 scheme, not a claim that every SSC examination uses those values.
Example 4: Custom Negative Marking Scheme
Suppose an examination awards +3 for every correct answer and deducts 0.75 for each incorrect answer.
A candidate records:
- Correct answers: 45
- Wrong answers: 12
- Unattempted answers: 3
Positive marks = 45 × 3 = 135
Penalty marks = 12 × 0.75 = 9
Final score = 135 − 9
Final score = 126 marks
The same formula works for any examination with a known positive mark and wrong-answer penalty.
How Does Negative Marking Affect Guessing?
Negative marking changes the expected value of answering a question when you are uncertain.
The break-even probability of answering correctly is:
Break-even probability = Penalty ÷ (Marks for a correct answer + Penalty)
For a +4/−1 scheme:
1 ÷ (4 + 1) = 0.20
Break-even probability = 20%
This means an answer has a positive expected value when your probability of being correct is greater than 20%, assuming the stated scoring rules apply.
For a +2/−0.667 scheme:
0.667 ÷ (2 + 0.667) ≈ 25%
The break-even probability is approximately 25%.
This is a mathematical calculation, not a guarantee that guessing will improve an individual candidate's actual score. Your decision should also consider the available options, how confidently you can eliminate incorrect choices, and the examination's specific rules.
Tips for Managing Negative Marking in Competitive Exams
1. Understand the marking scheme
Before attempting a paper, check how many marks are awarded for correct answers and deducted for incorrect ones. Do not assume that every examination uses the same penalty.
2. Consider the expected value and risk of guessing
Whether a guess has positive expected value depends on the scoring rule and your chance of being correct. With four equally likely options under +4/−1, a blind guess has an expected value of +0.25 marks; under +2/−2/3, it is break-even. Positive expected value does not guarantee a positive result on an individual question, and guessing increases score variability. Use the exam's actual rules and eliminate options when you can.
3. Practise option elimination
Eliminating options using subject knowledge can improve the probability of selecting the correct answer. However, an eliminated option does not guarantee that the remaining answer is correct.
4. Review your mock test accuracy
After each mock test, compare your correct and incorrect answers. Identify subjects or question types where you repeatedly lose marks.
5. Analyse marks lost through incorrect answers
Calculate the total penalty from wrong responses. This helps you understand how much your incorrect attempts affect your overall score.
6. Leave time to review uncertain answers
If the examination allows it, revisit questions that you have marked for review. Check the answer and ensure that you follow the examination's response instructions.
7. Track score and accuracy separately
A high accuracy percentage does not always mean a high examination score. Compare accuracy, attempted questions, positive marks, and penalty marks together to understand your performance.
Calculate Your Exam Score with SajiloX
Use the Negative Marking Calculator to check your examination score without manually calculating every deduction. Enter your correct and incorrect answers, select the appropriate marking scheme, and review your calculated marks and accuracy.
Whether you are preparing for NEET, JEE Main, UPSC, MAT, or another competitive examination, always use the marking rules specified in the relevant official examination notification.
Calculate your score, understand your mistakes, and use your mock test results to improve your preparation.