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Grade Calculator

Find a weighted course grade from numbered or letter scores, and the grade you need on remaining work or the final exam.

Weighted average of assignments. Mix numbers and letters, then optionally plan remaining work.

ExampleSample values — edit any field to see your result.

A number (90) or letter (B+). Mix of letters uses the GPA map.

Percent of the course, or points if Weight format is Points.

Results update as you type.

Average grade

B+

B+ (3.21)

Weighted mean of the scores you entered. Letters produce a GPA.

Estimated result

Total weight
45%

Assignment breakdown

AssignmentGradeWeight
Homework 1905%
ProjectB20%
Midterm exam8820%
Total45%
Average gradeB+ (3.21)

Average a course from weighted assignments (points, percents, or letters) and see the score you still need on leftover work. The Final tab solves the grade required on a final exam to finish at a target.

Formula

A course average is the weighted mean of the scores you enter:

average = Σ (score × weight) ÷ Σ weight

All-numeric scores stay percents (one decimal) and pick a letter from the table below. Any letter in the list switches the average onto the GPA column (two decimals) and the nearest letter. Remaining-work planning uses each letter's lower percent:

needed = (goal × 100 − Σ current × weight) ÷ weight remaining

A final exam of weight c percent is the same identity solved for the unknown exam score:

needed final = (target − current × (1 − c ÷ 100)) ÷ (c ÷ 100)

Two letter grades on the Final tab are averaged on the 4.3 GPA scale. If the exam would need more than an A+ (4.3), the result says even an A+ is not enough. Percent targets still show the numeric score, even when it is above 100.

Letter grades, GPA, and percent ranges

LetterGPAPercentage
A+4.397–100%
A4.093–96%
A−3.790–92%
B+3.387–89%
B3.083–86%
B−2.780–82%
C+2.377–79%
C2.073–76%
C−1.770–72%
D+1.367–69%
D1.063–66%
D−0.760–62%
F00–59%

Examples

Default mixed course

Homework 1 at 90 (5%), Project at B (20%), and Midterm exam at 88 (20%) include a letter, so 90 becomes A− = 3.7 and 88 becomes B+ = 3.3. The weighted GPA is (3.7×5 + 3.0×20 + 3.3×20) ÷ 45 = 3.21, nearest letter B+. Total weight is 45%.

Numeric course plus remaining work

Quiz 95 at 30% and Exam 80 at 40% average to 86.4 (B). Aiming for 90 with 30% left needs (90×100 − 95×30 − 80×40) ÷ 30 = 98.3 on the remaining tasks.

Final exam needed

Current grade 88, course target 85, final worth 40%: needed = (85 − 88 × 0.60) ÷ 0.40 = 80.5. A current 82, target 85, and 30% final needs 92.0.

Frequently asked questions

How is a weighted course grade calculated?
Multiply each assignment's score by its weight, add those products, and divide by the total weight. Homework at 90 with 5%, a Project at B (3.0 GPA) with 20%, and a Midterm at 88 with 20% mix letters and numbers, so the calculator converts the percents onto the GPA map and averages to 3.21, which is a B+.
When does the calculator show a GPA instead of a percent?
If every score is numeric, the result is a percent to one decimal plus its letter band (86.4 is a B). If any score is a letter, every numeric score is mapped through the same letter bands, then a credit-weighted GPA is shown to two decimals with the nearest letter (B+ at 3.21).
How do I find the grade I need on remaining work?
Open Final grade planning and enter a course goal plus the weight still outstanding. Needed = (goal × 100 − Σ current × weight) ÷ remaining weight, using each letter's lower percent (B is 83, A− is 90). Quiz 95 at 30% and Exam 80 at 40%, aiming for 90 with 30% left, needs 98.3.
What grade do I need on the final exam?
Switch to Final exam needed. Needed = (target − current × (1 − final weight ÷ 100)) ÷ (final weight ÷ 100). A current 88, target 85, and 40% final needs 80.5 on the exam. Two letter grades are solved on the GPA scale; if that value is above 4.3, even an A+ is not enough.
What percent does each letter grade represent?
A+ is 97–100% (4.3), A 93–96% (4.0), A− 90–92% (3.7), B+ 87–89% (3.3), B 83–86% (3.0), B− 80–82% (2.7), C+ 77–79% (2.3), C 73–76% (2.0), C− 70–72% (1.7), D+ 67–69% (1.3), D 63–66% (1.0), D− 60–62% (0.7), and F 0–59% (0). Schools differ; use the GPA calculator's point tab for a custom scale.

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