Grade Calculator
Track your grades with weighted assignments. Calculate your current grade, see what you need on the final, and monitor progress towards your goal grade.
Assignments & Grades
Total Weight: 70% (target: 100%)
Grade Scale
A
90-100
B
80-89
C
70-79
D
60-69
F
<60
How Weighted Grades Are Calculated
Start by entering each component of your course - homework, quizzes, midterm, final, projects - along with the percentage weight of each. The weights should sum to 100, but the tool also handles partial scenarios where you have only completed some assessments and want to project where you currently stand. Type in the percentage you scored on each and the calculator returns your weighted average plus a letter grade on the standard A-F scale (A 90+, B 80-89, C 70-79, D 60-69, F below 60).
The calculation is straightforward: multiply each score by its weight, sum the results, divide by total weight. A student with 85% on homework (weight 20), 78% on quizzes (weight 20) and 91% on midterm (weight 30) has a weighted total of (85 × 20 + 78 × 20 + 91 × 30) / 70, which is 85.4% with two-thirds of the course complete. The remaining 30% (typically the final exam) determines the final grade, which is exactly what students need to plan revision time.
What Score You Need on the Final
Once you have entered your current grades, the tool tells you what you need to score on the remaining assessments to hit a target. If you are sitting on 85.4% with 30% of the course left and you want a final A (90%), you need (90 × 100 - 85.4 × 70) / 30 on the final, which is 100.7%. That is impossible, which tells you an A is out of reach unless extra credit appears. Aiming for a B (80%) is comfortably achievable with a 70% on the final, which is the kind of clarity that helps students prioritise revision against other modules.
A common scenario: students enter their grades the night before a final and discover that even a perfect score will not save the grade, or conversely that they only need 50% to keep a B. Both pieces of information are useful. The first reframes the goal (focus on minimising damage and prioritising other modules); the second reduces panic and frees up energy for genuinely make-or-break exams elsewhere. If your course awards grades on a different scale (UK degree class, German Abschlussnote, Australian high distinction), use the [International Grade Converter](/grade-conversion-tool) to translate the percentage figure here into your local grading system.
Frequently Asked Questions
Does this work for UK university grades?
It uses the US-style A-F letter scale, which works directly for international schools using that system and roughly maps to UK degree classifications (A is First, B is 2:1, C is 2:2, D is Third, F is Fail). UK universities calculate using percentages with thresholds at 70 (First), 60 (2:1), 50 (2:2) and 40 (Pass), so the underlying weighted-average calculation works fine - just ignore the letter grade and read the percentage figure instead.
What if my weights do not add up to 100?
The tool handles this gracefully by dividing by the actual sum of weights rather than assuming 100. So if you enter weights of 25, 25 and 25 (total 75) the calculator treats it as 1/3, 1/3, 1/3. This is useful when you want to track progress mid-semester before all assessments are listed. Once you know all components, double-check that the weights sum to 100 to match your syllabus exactly.
Can I use percentages above 100 for extra credit?
Yes. The tool accepts any positive number, including scores over 100% if your professor offers bonus marks. Be careful with this - a 110% on a 10%-weighted assignment only adds an extra 1% to your overall grade, which is rarely enough to push a B to an A. Use the calculator to check whether the extra credit is worth chasing or whether your time is better spent on a heavier assessment.
Why does my online grade portal show a different number?
Most portals (Canvas, Blackboard, PowerSchool) calculate grades the same way, but the figure they show often excludes assignments not yet graded. If you have submitted a paper that has not been marked, the portal might show 92% based on completed work only. This calculator shows the weighted total including any zeros for missing submissions, which can make it look lower than the portal figure - check that you have entered scores for every assessment and not left blanks.
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