What this calculator does
The Minimum Grade to Pass Calculator tells you the lowest score you must earn on your remaining coursework or final exam in order to pass a class. Instead of guessing, you enter three numbers — your current grade, how much of the final grade it counts for, and the score you need to pass — and it returns the exact percentage required on what's left.
How to use it
Enter your current grade so far as a percentage, the weight of that grade (the share of the final grade already locked in — for example 60% if your final exam is worth 40%), and the pass threshold (often 50%, 60% or 70%). The calculator computes the minimum score needed on the remaining portion of the grade.
The formula explained
The final grade is a weighted average. Your current grade contributes Current × w/100 points. To reach the threshold, the remaining work (worth 100 − w percent of the grade) must supply the rest:
$$\text{Needed} = \frac{\text{Threshold} - \dfrac{\text{Current} \times w}{100}}{\dfrac{100 - w}{100}}$$
If the result is above 100%, passing on the remaining work alone isn't mathematically possible. If it's zero or negative, you've already passed.
Worked example
Suppose your current grade is 75%, counting for 60% of the course, and you need 50% to pass. Points earned so far = \(75 \times 0.60 = 45\%\). Remaining weight = 40%. Needed:
$$\text{Needed} = \frac{50 - 45}{0.40} = \frac{5}{0.40} = 12.5\%$$
You only need to score 12.5% on the final 40% to pass.
FAQ
What weight should I enter? Enter the combined weight of everything already graded. If your final exam is worth 30%, your current weight is 70%.
Why is my needed score over 100%? It means the remaining work can't make up the gap on its own — passing is no longer possible under these weights.
Does this work for any grading scale? Yes, as long as you express all values as percentages of the same scale.
