Grade Calculator
Scored 73 out of 90 on your midterm? That’s 81.1% — a B−. Or if you’re at 76% with a final worth 25%: you need 92% to finish with a B. Enter any score below, or use the final exam calculator to run your specific numbers.
Last updated: April 2026
Score to percentage & letter grade
Enter the points you scored and the total possible points to get your percentage grade and letter grade.
What grade do I need on my final?
Enter your current grade, the weight of the final exam, and the overall grade you want to achieve. The calculator shows exactly what you need to score.
Letter grade scale
The standard US letter grade scale used by most schools and colleges:
| Letter grade | Percentage range | GPA points | Meaning |
|---|---|---|---|
| A+ | 97–100% | 4.0 | Exceptional |
| A | 93–96% | 4.0 | Excellent |
| A− | 90–92% | 3.7 | Excellent |
| B+ | 87–89% | 3.3 | Above average |
| B | 83–86% | 3.0 | Above average |
| B− | 80–82% | 2.7 | Above average |
| C+ | 77–79% | 2.3 | Average |
| C | 73–76% | 2.0 | Average |
| C− | 70–72% | 1.7 | Average |
| D+ | 67–69% | 1.3 | Below average |
| D | 60–66% | 1.0 | Below average |
| F | Below 60% | 0.0 | Failing |
How to calculate a grade as a percentage
Divide your score by the total points, then multiply by 100. Percentage = (Score ÷ Total) × 100. A score of 38 out of 45: (38 ÷ 45) × 100 = 84.4% — a B on the standard scale. This is the same operation as the percentage of a number calculator’s “X is what % of Y” mode.
What grade do I need on my final?
The formula is: Required = (Target − Current × (1 − Final weight ÷ 100)) ÷ (Final weight ÷ 100). For example, if your current grade is 78%, the final is worth 30%, and you want an 80% overall: Required = (80 − 78 × 0.70) ÷ 0.30 = (80 − 54.6) ÷ 0.30 = 84.67%. For a full walkthrough with scenario cards and a detailed FAQ, see the dedicated what grade do I need on my final? page.
How grades translate to GPA
Most US colleges use a 4.0 GPA scale. An A (93–100%) is 4.0, a B (83–86%) is 3.0, a C (73–76%) is 2.0, and so on. A 3.5 GPA corresponds roughly to a B+/A− average. GPA is calculated as the weighted average of all course grade points — each course’s credit hours act as its weight. To find any weighted average, the salary raise calculator applies the identical weighted arithmetic to calculate how small percentage differences compound into significant long-term gaps.
Calculating a weighted grade average
When assignments carry different weights — quizzes 20%, midterm 30%, final 50% — your overall grade is a weighted average, not a simple average. Multiply each score by its weight, sum the results, then divide by 100. Example: quiz average 88% (weight 20%), midterm 74% (weight 30%), final 82% (weight 50%): (88 × 0.20) + (74 × 0.30) + (82 × 0.50) = 17.6 + 22.2 + 41.0 = 80.8%. A simple average of 88, 74, 82 gives 81.3% — close but incorrect when weights differ significantly.
How extra credit affects your grade
Extra credit points are typically added directly to your earned points before dividing by the total possible. If you scored 78 out of 100 and earn 5 extra credit points, your grade becomes (78 + 5) ÷ 100 = 83%. Some instructors add extra credit without increasing the denominator, allowing scores above 100%. Always check your syllabus — the method affects the calculation significantly at the grade boundary.
International grading scales
Grading systems vary by country. The UK uses First Class (70%+), 2:1 (60–69%), 2:2 (50–59%), and Third (40–49%) for university degrees. Germany uses a 1–5 scale where 1 is highest and 4 is the minimum pass. France grades on 0–20 with 10 as the pass mark and 16+ considered excellent. The Netherlands uses 1–10 with 5.5 as the minimum pass. Converting between systems is not straightforward since pass thresholds and score distributions differ, but the underlying percentage formula is identical everywhere.
Grade recovery: how much can one exam change your grade?
The maximum impact of any single exam is capped by its weight. A final worth 40% can shift your overall grade by at most 40 percentage points. If your current grade is 65% and the final is worth 40%, a perfect 100% on the final brings you to: (65 × 0.60) + (100 × 0.40) = 39 + 40 = 79% — not enough to reach a B. This is why grade recovery becomes mathematically impossible above a certain gap. The exact score required is: Required = (Target − Current × (1 − Weight)) ÷ Weight. Use the percentage change calculator to verify the gap between your current grade and target, and the dedicated final exam page for the full breakdown.
Frequently asked questions
Divide your score by the total points and multiply by 100. Score of 38 out of 45: (38 ÷ 45) × 100 = 84.4%.
Use the “What grade do I need?” calculator above. Enter your current grade, the weight of the final (e.g. 30%), and your target (e.g. 60% to pass or 70% for a C). The calculator shows exactly what score you need.
75% is a C on the standard US grading scale (73–76% = C, 77–79% = C+).
90 out of 100 is 90%, which is an A− on the standard US scale (90–92% = A−, 93–100% = A/A+).
Multiply each component score by its weight (as a decimal), then sum the results. If quizzes (20%) averaged 85, midterm (30%) was 78, final (50%) was 82: (85×0.20) + (78×0.30) + (82×0.50) = 17 + 23.4 + 41 = 81.4%. A simple average would give 81.7% — close but wrong if weights are unequal.
In the US, 60% (a D) is typically the minimum passing grade at high school level. Most US universities require a C (73%) or better to count a course toward a degree. Graduate programmes often require a B (83%) minimum. Always check your specific institution’s requirements.
It depends entirely on the final’s weight. If your final is worth 40% of your course grade and you score 95% instead of 55%, that’s a 40-point swing on the component (0.40 × 40 = 16 percentage points on your course grade). Concretely: if you sit at 78% before finals and your final is worth 30%, scoring 90% pulls you to 81.6% — potentially crossing from a B− to a B+. Use the “What grade do I need?” calculator above to run your specific numbers and see exactly what each possible score would do to your final grade.
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