Midterm Grade Calculator
What do I need on my midterm? Enter your current grade and how much the midterm is worth, and find the exact score you need for an A, a B, or just to pass — plus what your grade becomes if you score 100, 90, 80, 70, or 60. Free to use, with no login required.
What Do You Need on Your Midterm?
Three numbers are all it takes: the grade you have now, the percentage of your final grade the midterm is worth (check your syllabus), and the grade you are aiming for.
Letter grades use the standard scale: A+ 97–100, A 93–<97, A− 90–<93, B+ 87–<90, B 83–<87, B− 80–<83, C+ 77–<80, C 73–<77, C− 70–<73, D+ 67–<70, D 63–<67, D− 60–<63, F below 60. Your school’s own scale decides the official grade.
The midterm is the first big checkpoint of the semester — and the first moment most students ask the question this page answers: what do I need on my midterm? Maybe you are sitting at 82% and want to finish the term at 90%. Maybe you are at 91% and just want to hold on to an A. Either way, the answer is a number, and it comes from three things you already know: your current grade, how much the midterm is worth, and the grade you want. Enter them above and the calculator works it out, including the honest answer when the target is out of reach.
This is the same math as the final grade calculator, moved earlier in the term: the midterm is just a final exam that happens in the middle. If your big exam is at the end of the course instead, use the final grade calculator for it.
How to Use the Midterm Grade Calculator
- Enter your current grade. This is your grade in the class right now, as a percentage — everything graded so far, homework, quizzes, and tests included. If you are not sure of the exact number, use our class grade calculator to work it out first.
- Enter the midterm’s weight. Check your syllabus for the percentage of your final grade the midterm is worth — commonly 20% to 30%. If the syllabus lists it as a fraction (for example, one quarter of your grade), enter 25.
- Enter your target grade. The grade you want to have after the midterm is counted. Then press Calculate What I Need.
The calculator shows the exact midterm score you need, the letter grade of that score, and a what-if table: your grade if you score 100, 90, 80, 70, or 60 on the midterm. If the target cannot be reached even with a perfect score, it says so plainly instead of inventing a number.
The Formula
Your grade after the midterm is a weighted average of two numbers: the grade you have now, and the score you get on the midterm. The midterm’s weight decides how much of the average it controls:
Working backwards from the grade you want gives the score you need:
The weight goes in as a decimal: a 25% midterm is 0.25, a 20% midterm is 0.20. The bigger the weight, the more the midterm can move your grade — in both directions.
Worked Example 1: A Target That Is Out of Reach
A student sits at 82%, the midterm is worth 25%, and the target is 90%. How high must the midterm score be?
The current grade keeps 75% of the weight: 82 × 0.75 = 61.5. The target is 90, so the midterm must supply 90 − 61.5 = 28.5 points. But the midterm is only worth 25% of the grade, so the score needed is 28.5 ÷ 0.25 = 114%. That is more than a perfect score — it is impossible.
Even a perfect 100% on the midterm only gets this student to 61.5 + 100 × 0.25 = 61.5 + 25 = 86.5%. The gap between 82% and 90% is too big for a 25% exam to close. The honest options are a lower target (88% needs 98%, still hard but possible) or accepting that the A− will have to wait for the final exam, where the remaining work is bigger. This is the calculator’s most useful answer: it stops you studying for a number that does not exist.
Worked Example 2: A Tough but Possible Target
Now a student at 88%, with a midterm worth 20%, aiming for 90%.
The current grade keeps 80% of the weight: 88 × 0.80 = 70.4. The midterm must supply 90 − 70.4 = 19.6 points, and it is worth 20%, so the score needed is 19.6 ÷ 0.20 = 98%. That is a very high score, but it exists: a 98% on the midterm gets this student exactly to 90%.
The what-if table tells the rest of the story: a 90% on the midterm gives 70.4 + 90 × 0.20 = 70.4 + 18 = 88.4%, and an 80% gives 70.4 + 16 = 86.4%. With only 20% of the grade on the line, even a mediocre midterm barely moves the needle — which is reassuring if you are nervous, and a warning if you were counting on the midterm to rescue the grade.
Worked Example 3: Holding On to an A
Finally, a student at 91% whose midterm is worth 30%, aiming to stay at 90%.
The current grade keeps 70% of the weight: 91 × 0.70 = 63.7. The midterm must supply 90 − 63.7 = 26.3 points, and it is worth 30%, so the score needed is 26.3 ÷ 0.30 = 87.67%. An 87.67% — a B+ — is enough to hold the A−. A 90% on the midterm gives 63.7 + 27 = 90.7%, and a perfect 100% gives 63.7 + 30 = 93.7%, an A.
This is the most common midterm situation: not chasing a grade, but defending one. The calculator shows exactly how much room there is — here, the student can drop to 87.67% on the midterm and still finish at 90%.
What If the Score You Need Is Impossible?
An impossible result is not a dead end — it is information, and it arrives while there is still time to act on it. Three things can still move the grade:
Lower the target, honestly. A target of 88% instead of 90% can turn an impossible 114% into a possible 98%. Ask what the lower grade actually costs you — often very little — before you burn yourself out chasing the higher one.
Ask about the remaining work. The midterm is not the last graded work of the term. Homework, quizzes, and the final exam are still to come, and the calculator’s what-if logic applies to them too. Our raise GPA calculator runs the same kind of planning math for a whole term, and our post on how much one bad test lowers your grade shows exactly how much a single bad score can cost — usually less than it feels like.
Talk to the teacher now. Before the midterm, not after it. Ask whether there is extra credit, whether a low midterm can be replaced by the final, or whether the syllabus’s weighting is as you understand it. Teachers answer these questions gladly before the exam; after it, the numbers are fixed.
Midterm vs Final: Same Math, Different Moment
The midterm and the final use exactly the same formula — a weighted average of what you have and what you score on the exam. The only difference is the moment: the midterm happens when there is still half a term left to recover, and the final happens when there is not.
That timing is why the midterm result matters more than it looks. A bad midterm leaves homework, quizzes, and the final itself still to come, and each of them can pull the grade back up. A bad final has nothing after it. So use the midterm result as a plan, not a verdict: if the number you need is high, you now know it weeks before the final, when the fix is still cheap. For the end-of-term version of this same calculation, see our final grade calculator.
Letter Grade Scale
The calculator converts your needed score to a letter grade using the standard scale below, with the usual grade points. The letter grade depends on your school’s own scale — some schools use different cutoffs, and a few do not use plus and minus grades at all. Check your syllabus for the scale that decides your official grade.
| Letter Grade | Percentage Range | Grade Points |
|---|---|---|
| A+ | 97–100 | 4.0 |
| A | 93–<97 | 4.0 |
| A− | 90–<93 | 3.7 |
| B+ | 87–<90 | 3.3 |
| B | 83–<87 | 3.0 |
| B− | 80–<83 | 2.7 |
| C+ | 77–<80 | 2.3 |
| C | 73–<77 | 2.0 |
| C− | 70–<73 | 1.7 |
| D+ | 67–<70 | 1.3 |
| D | 63–<67 | 1.0 |
| D− | 60–<63 | 0.7 |
| F | Below 60 | 0.0 |
Frequently Asked Questions
What if I don’t know my current grade?
Work it out first — guessing your current grade makes the answer meaningless. If your class grades in points, our class grade calculator adds up your assignments for you. If it weights categories, use the weighted grade calculator. Enter only work that has actually been graded.
What if my midterm is curved?
Then the score you need is the curved score, not the raw one. If your teacher curves by adding points, subtract the curve from the needed score to find the raw score you need. If the curve is a square-root curve, the raw score you need is lower than the number shown — our grade curve calculator can show you exactly how a curve changes a score.
Does homework count toward my current grade?
Yes, if it has been graded. Your current grade is everything counted so far — homework, quizzes, classwork, and any earlier tests — combined the way your syllabus says. If your class weights categories, homework’s share is its category weight; if it is points-based, homework counts by its points. Work that has not been graded yet, or has not been assigned yet, is not part of your current grade.
What is a good midterm score?
There is no universal number — it depends on where you stand and what you are aiming for. As a rough guide, a midterm score at or above your current grade holds your grade steady; a score 5 points above your current grade lifts it by about 5 × the weight (so 1.25 points on a 25% midterm). The calculator’s what-if table shows you the exact trade-off for your numbers.
Can I use this calculator for a quiz or a final?
Yes, the math is the same for any single exam: current grade, exam weight, target grade. It works for a quiz, a unit test, or a final. For the final specifically, our final grade calculator is the same calculation with final-exam wording and examples, and it is the one to bookmark for December and May.
Know the Number, Then Earn It
The midterm is not a mystery once you know the number. If the score you need is 87.67%, you know exactly what to study for — and exactly how much room you have. If the number is impossible, you know it now, while there is still a term left to change the plan. Either way, the worst outcome is going into the exam not knowing. Run the numbers, make the plan, and when the final arrives, check what you need on the final the same way.