In this guide
- What is negative marking?
- How to use this calculator
- How to calculate negative marking
- Negative marking examples
- 1/3 negative marking
- 1/4 (0.25) negative marking
- Negative marking penalty chart
- UPSC negative marking
- NEET marks with negative marking
- SSC CGL negative marking
- Should you guess?
- Common mistakes
- Accuracy and limitations
- Frequently asked questions
What is negative marking?
Negative marking is a scoring rule that deducts marks for wrong answers in a multiple-choice exam. Correct answers add marks, unanswered questions usually add or deduct nothing, and each wrong answer takes away a set penalty. Its purpose is to discourage random guessing, so your final score reflects accuracy as well as the number of questions you attempted.
A negative marking calculator does the arithmetic for you. You enter how many questions there were, how many you got right and wrong, the marks for a correct answer and the penalty, and it returns your final score, your percentage and where your marks were lost. It is useful right after a mock test or an exam, when you have your answer key and want a quick, reliable estimate.
How to use this calculator
- Pick an exam preset such as NEET UG or UPSC, or leave it on Custom.
- Check the total number of questions and the marks for each correct answer.
- Enter your correct and wrong answers. If you only know how many you attempted, switch to Attempted + wrong.
- Choose the penalty: 1/3, 1/4, 1/5, 1/2, or a custom number of marks.
- Press Calculate Score to see your result, then copy, share or print it.
How to calculate negative marking
The calculation has two parts. First work out what you earned and what you lost:
- Marks earned = correct answers × marks per correct answer
- Marks lost = wrong answers × penalty per wrong answer
- Final score = marks earned − marks lost
- Penalty per wrong answer = marks per correct answer × the penalty fraction
Unattempted questions are the total minus correct minus wrong, and they do not change the score. If you know the attempted count instead, the correct answers are attempted minus wrong. Your percentage is the final score divided by the maximum marks, which is the total number of questions times the marks for each.
Negative marking examples
Example 1: 1/3 penalty. A 100-question test with 1 mark per question: 60 correct, 24 wrong and 16 unattempted. Marks earned are 60, and marks lost are 24 × 1/3 = 8. Final score: 60 − 8 = 52.
Example 2: 1/4 penalty (0.25). A 100-question test with 1 mark per question: 70 correct, 20 wrong and 10 unattempted. Marks lost are 20 × 0.25 = 5. Final score: 70 − 5 = 65.
Example 3: UPSC GS Paper 1. 100 questions, 2 marks each, 1/3 penalty: 62 correct, 30 wrong and 8 unattempted. Marks earned are 124, and marks lost are 30 × 2/3 = 20. Final score: 104 out of 200.
Example 4: UPSC CSAT. 80 questions, 2.5 marks each, 1/3 penalty: 60 correct, 15 wrong and 5 unattempted. Marks earned are 150, and marks lost are 15 × 0.8333 = 12.5. Final score: 137.5 out of 200.
Example 5: NEET UG. 180 questions, +4 and −1: 150 correct, 20 wrong and 10 unattempted. Marks earned are 600, and marks lost are 20. Final score: 580 out of 720.
Example 6: SSC CGL Tier 1. 100 questions, 2 marks each, 0.50 penalty: 80 correct, 12 wrong and 8 unattempted. Marks earned are 160, and marks lost are 6. Final score: 154 out of 200.
Example 7: attempted and wrong. You attempted 85 questions and 20 were wrong, so 65 were correct. With 1 mark and a 1/4 penalty, the score is 65 − 5 = 60.
1/3 negative marking
With 1/3 negative marking, each wrong answer costs one-third of the marks a correct answer earns. That means three wrong answers wipe out one correct answer. The scheme is common in competitive exams in India. To use this 1/3 negative marking calculator, choose the 1/3 option and enter your marks per question. With 1 mark per question each wrong answer is −0.33, and with 2 marks it is −0.67.
1/4 (0.25) negative marking
With 1/4 negative marking, each wrong answer costs a quarter of the marks for a correct answer. At 1 mark per question that is 0.25 marks, which is why many people search for a 0.25 negative marking calculator. Four wrong answers cancel out one correct answer. At 4 marks per question, the penalty becomes 1 mark. If your exam states a fixed deduction rather than a fraction, use Custom and type the number of marks.
Negative marking penalty chart
This chart shows the marks deducted for each wrong answer:
| Penalty | 1 mark per question | 2 marks per question | 4 marks per question | Break-even chance |
|---|---|---|---|---|
| 1/3 | −0.33 | −0.67 | −1.33 | 25% (1 in 4) |
| 1/4 | −0.25 | −0.5 | −1 | 20% (1 in 5) |
| 1/5 | −0.2 | −0.4 | −0.8 | 16.67% (1 in 6) |
| 1/2 | −0.5 | −1 | −2 | 33.33% (1 in 3) |
UPSC negative marking
In the UPSC Prelims, both papers have negative marking of one-third of the marks assigned to a question for each wrong answer. GS Paper 1 has 100 questions worth 2 marks each, so each wrong answer deducts about 0.67. CSAT has 80 questions worth 2.5 marks each, so each wrong answer deducts about 0.83. Unanswered questions are not penalized. GS Paper 1 is the merit paper, while CSAT is qualifying, and candidates need at least 33% (66.67 out of 200) to clear it. Marks per question can change if the commission cancels a question, so check the official notice. Use the UPSC GS or UPSC CSAT preset for these calculations.
NEET marks with negative marking
NEET UG awards +4 for each correct answer and deducts 1 mark for each wrong answer, with no change for unanswered questions. With 180 questions, the maximum is 720. To work out your score, multiply correct answers by 4, then subtract the number of wrong answers. A wrong answer therefore costs you five marks compared with a correct one, which is 4 marks gained plus 1 lost.
SSC CGL negative marking
SSC CGL Tier 1 has 100 questions of 2 marks each, and each wrong answer deducts 0.50 marks. Tier 2 uses different marks and penalties across papers, so use Custom for those. The preset in this calculator covers Tier 1.
Exam presets at a glance
| Exam | Questions | Marks per correct | Penalty per wrong | Maximum marks |
|---|---|---|---|---|
| NEET UG | 180 | +4 | −1 (1/4) | 720 |
| UPSC GS Paper 1 | 100 | +2 | −0.67 (1/3) | 200 |
| UPSC CSAT | 80 | +2.5 | −0.83 (1/3) | 200 |
| SSC CGL Tier 1 | 100 | +2 | −0.5 (1/4) | 200 |
Exam patterns can change from year to year, so always confirm the details in the official notification or information bulletin.
Should you guess?
Negative marking turns guessing into a calculation. A guess is worthwhile on average only when your chance of being right is higher than the break-even point, which is the penalty divided by the marks plus the penalty. With a 1/3 penalty, that is 25%, or 1 in 4. With 1/4 it is 20%, or 1 in 5. If you can eliminate even one of four options, your odds on a question rise above the break-even chance. These are averages across many questions, so a single guess can still go either way, and whether to guess is your call.
Common mistakes
- Counting unattempted questions as wrong. They normally carry no penalty.
- Using the wrong penalty. A 1/3 penalty on 2 marks is 0.67, not 0.33.
- Rounding the penalty too early. Round only the final score.
- Entering attempted as correct. Use Attempted + wrong if you know the attempted count.
- Forgetting different marks across sections. Calculate each section on its own.
- Treating a preset as official. Always confirm the scheme for your year.
Accuracy and limitations
This negative marking calculator gives an estimate of your raw score. It does not apply normalization, scaling, rank or cut-off calculations, which some exams use. It also assumes every question carries the same marks. Official results are decided by the exam authority, and its notification is what counts. This tool is not affiliated with any exam body.
Looking for other tools? See all our calculators.
Frequently asked questions
How do I calculate negative marking?
Multiply the number of correct answers by the marks for each correct answer, then subtract the number of wrong answers multiplied by the penalty for each wrong answer. Unattempted questions are normally ignored. For example, 60 correct and 20 wrong with 1 mark and a 1/4 penalty is 60 − (20 × 0.25) = 55.
How does 1/3 negative marking work?
A wrong answer costs one-third of the marks a correct answer earns. With 1 mark per question, each wrong answer deducts 0.33 marks. With 2 marks per question, each wrong answer deducts 0.67 marks. Three wrong answers cancel out one correct answer.
How do I calculate 1/4 negative marking (0.25)?
A wrong answer costs one-quarter of the marks for a correct answer. With 1 mark per question that is 0.25 marks, so four wrong answers cancel one correct answer. With 4 marks per question, as in NEET, the penalty is 1 mark.
Is there negative marking in the UPSC Prelims?
Yes. In both GS Paper 1 and CSAT, one-third of the marks assigned to a question is deducted for each wrong answer. GS Paper 1 has 100 questions of 2 marks each, so a wrong answer costs about 0.67. CSAT has 80 questions of 2.5 marks each, so a wrong answer costs about 0.83. Unanswered questions carry no penalty.
What is the negative marking in NEET?
NEET UG gives +4 marks for each correct answer and −1 mark for each wrong answer, and nothing is added or deducted for unanswered questions. With 180 questions, the maximum score is 720. Check the latest official information bulletin for the current year.
What is the marking scheme for SSC CGL Tier 1?
SSC CGL Tier 1 has 100 questions of 2 marks each, with a deduction of 0.50 marks for each wrong answer. Tier 2 uses different values in different papers, so use the Custom option for those and check the official notice.
Do unattempted questions get negative marks?
In the exams covered here, no. A question you leave blank earns zero and costs nothing, which is why skipping can be safer than a low-confidence guess. Check your own exam’s rules, because some treat multiple marked options as wrong.
How do I calculate my marks if I only know the attempted and wrong counts?
Switch the calculator to Attempted + wrong. Correct answers equal the questions attempted minus the wrong answers. If you attempted 85 questions and 20 were wrong, then 65 were correct.
Should I guess when there is negative marking?
The math gives a break-even point: a guess is worth it on average only when your chance of being right is above the penalty divided by marks plus penalty. With a 1/3 penalty that is 25%, with 1/4 it is 20%. If you can rule out some options, your odds improve. This is an average, not a promise, and it is your decision.
Why do different calculators show slightly different UPSC scores?
Some round the penalty to 0.66 or 0.67, while others use the exact fraction, two-thirds. Over many wrong answers, that small difference adds up. This calculator uses exact fractions and shows the penalty to two decimals.
Is the penalty always a fraction of the marks?
Usually, but not always. Some exams state a fixed deduction instead, such as 0.25 marks per wrong answer. Choose Custom and enter the exact number of marks deducted.
Can I use this for school or college tests?
Yes. Any test with a penalty for wrong answers works. Enter the number of questions, the marks per correct answer and the penalty your teacher or institution uses.
Is the maximum score always questions times marks?
Here it is, because the calculator assumes every question carries the same marks. If your paper has sections with different marks, calculate each section separately and add the results.
Does the calculator save my numbers?
No. The calculation runs in your browser and your entries are not uploaded. Use Copy results, Share on WhatsApp or Print results if you want to keep a record.