About the Negative Marking Calculator
Net score when wrong answers lose marks, and whether guessing is worth it.
Also known as: negative marks calculator, penalty marking, should i guess exam, net score calculator.
How to use this calculator
- Enter total questions, correct answers, wrong answers, marks per correct answer and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
score = correct × marks − wrong × penalty
Worked example
Using the values pre-filled in the calculator above:
- Total questions = 100
- Correct answers = 68
- Wrong answers = 22
- Marks per correct answer = 4
- Penalty per wrong answer = 1
- Options per question = 4
the calculator returns:
- Net score: 250
- Percentage: 62.5%
- Marks from correct answers: 272
- Marks lost to penalties: 22