Negative Marking Calculator
Calculate marks earned, penalties and your final exam score. Choose ¼, ⅓, ½, no deduction or your own marking rule.
Your marking rule matters. Check your exam instructions before entering values. This tool calculates a raw score, not an official result.
Set your exam marking rule
Enter answer counts and the marks awarded or deducted.
Keep a copy of your calculation
How each penalty changes your score
The fraction is taken from the marks for one correct answer, not from your total score.
Quarter marking: +4 / −1
With 4 marks for a correct answer, a quarter penalty deducts 4 × ¼ = 1 mark per wrong answer.
Final score = 220 out of 400
One-third marking: +3 / −1
With 3 marks for a correct answer, a one-third penalty deducts 3 × ⅓ = 1 mark per wrong answer.
Final score = 195 out of 300
Half marking: +2 / −1
With 2 marks for a correct answer, a half penalty deducts 2 × ½ = 1 mark per wrong answer.
Final score = 90 out of 200
Custom or no deduction
Use a custom fraction such as 2/5, a fixed deduction such as 0.25 marks, or no negative marking. Enter the rule printed in your exam instructions.
Final score = 78 out of 200
Example assumes 100 total questions.
A clear estimate with defined limits
Your entered answer counts and marking rule determine the result.
What this calculator does
- Calculates earned marks, deductions and the final raw score.
- Shows unanswered questions, attempted-answer accuracy and score percentage.
- Uses fractional or fixed penalties and allows negative final scores.
- Runs the calculation in your browser without uploading your inputs.
What needs an official result
- Rank, percentile, cut-offs, qualification or admission decisions.
- Normalization, bonus marks, cancelled questions and partial credit.
- Different marking rules across sections or question types.
- Unanswered-question penalties, score floors and exam-specific rounding.
Read your result correctly
A score percentage and an answer accuracy measure different things.
Accuracy measures attempted answers
- Attempted = correct + wrong.
- Accuracy = correct ÷ attempted × 100.
- For 60 correct and 20 wrong, accuracy is 75%, regardless of the penalty.
- If you attempt no questions, accuracy is shown as not available.
Score percentage includes deductions
- Maximum marks = total questions × marks per correct answer.
- Score percentage = final score ÷ maximum marks × 100.
- For 220 out of 400, score percentage is 55%.
- A negative raw score also produces a negative score percentage.
Continue your academic calculations
Use another calculator when you need grades or percentage conversions.
Negative marking questions, answered
Understand the inputs, formula and limits before using your result.
How is negative marking calculated?
Final score = (correct answers × marks per correct answer) − (wrong answers × penalty per wrong answer). Unanswered questions receive zero marks and no penalty in this calculator.
What does one-third negative marking mean?
One-third marking deducts one-third of the marks awarded for a correct answer for each wrong answer. If a correct answer earns 3 marks, each wrong answer deducts 1 mark.
Can I enter a fixed penalty instead of a fraction?
Yes. Select Custom fixed marks and enter the marks deducted for each wrong answer. Use this when the deduction is specified as a number rather than a fraction of the correct-answer marks.
Can the final score be negative?
Yes. If total deductions exceed the marks earned, the calculator shows a negative score. It does not automatically apply a zero-score floor.
Does this predict rank, percentile or admission?
No. It calculates a raw score using one uniform marking rule. It does not apply normalization, bonus marks, partial credit, section-specific rules or official rounding policies, and it cannot predict rank, percentile or admission.
How are accuracy and score percentage different?
Accuracy is correct answers divided by attempted questions, multiplied by 100. Score percentage is the final score divided by the maximum possible marks, multiplied by 100. Accuracy is not available when no questions are attempted.
How are decimal results rounded?
Calculations use the entered values without intermediate display rounding. Results are displayed to at most four decimal places. A one-third deduction is calculated as 1 divided by 3 rather than a shortened decimal.
Are my answers uploaded or saved?
This calculator processes your numeric entries in your browser. Its calculation code does not upload or save those entries. Your website theme or other plugins may operate separately.
Ready to check your exam score?
Keep your answer key and marking instructions beside you.