Study & writing
Pass mark calculator
Enter how many questions the test has and the percentage you need to pass; see the marks required and how many answers you can afford to miss.
If every question is worth one mark, leave marks per question at 1. For a points-based exam, enter the points each question carries.
How the pass mark is calculated
The total marks on offer are the number of questions multiplied by the marks each one carries. The pass mark is that total multiplied by the threshold percentage: marks needed = total marks × threshold ÷ 100. Because you cannot score a fraction of a mark on most tests, the calculator rounds the requirement up to the next whole mark, so you are never told a half-mark is enough. The number of answers you can get wrong is simply the total questions minus the questions you must answer correctly.
Worked example: a 40-question test, one mark per question, with a 50% pass threshold. The total is 40 marks, and 40 × 50 ÷ 100 = 20 marks. At one mark each that means 20 correct answers, so you can afford to get the other 20 wrong and still pass. Raise the threshold to 60% and you need 24 correct, leaving room for only 16 mistakes.
| Pass threshold | Marks needed (40-mark test) | Answers you can miss |
|---|---|---|
| 40% | 16 | 24 |
| 50% | 20 | 20 |
| 60% | 24 | 16 |
| 70% | 28 | 12 |
| 80% | 32 | 8 |
Reading your pass target
The pass mark tells you the floor, not the goal. Aiming for exactly the threshold leaves no room for a misread question or a topic you skipped, so most teachers suggest treating the pass mark as a minimum and planning a buffer of a few extra correct answers. The "can get wrong" figure is useful during the test itself: if you know you can miss eight and still pass, you can skip the two hardest questions without panic and come back to them.
Negative marking changes the picture. If wrong answers subtract marks rather than scoring zero, a blank is sometimes safer than a guess, and this calculator's wrong-answer allowance no longer applies directly. The same is true when questions carry different weights: enter the total points and the points each question is worth rather than counting questions, or the figure will be off. This calculator finds the mark needed to clear a fixed threshold, which is different from working out the score you need on one remaining paper to reach an overall course grade.
Frequently asked questions
How many questions do I need to pass?
Multiply the total questions by the pass percentage. On a 40-question test with a 50% pass mark you need 20 correct answers, so you can get 20 wrong and still pass.
What is a typical pass mark?
Many school and college tests set the pass mark at 50% or 60%, while professional and licensing exams often use 70% or higher. Always check the figure for your specific test.
How do I calculate a pass mark with different points per question?
Enter the points each question carries as the marks per question. The calculator uses total points × threshold to find the points you need, then converts that to questions.