Helpful academic tools for organization: Timeline Maker, Quick Table Generator, Word & Character Counter, Case Converter, Math Formula Renderer, Citation Guide.
Weighted Grading Basics
Formula: Course Average = Σ(Category Weight × Category Average). All weights must sum to 100% (or 1.0). The calculator validates this and highlights errors.
- Example weights: Exams 60%, Quizzes 20%, Homework 20%.
- Drop lowest rule: Exclude the lowest score in a category before recalculating the average.
- Penalties: Apply late penalties or deductions; the calculator shows raw vs adjusted grades.
Percentage to Letter Grades
Map percentages to letter grades using your syllabus scale. Many courses use plus/minus grading (A, A-, B+, etc.). The calculator supports custom cutoffs, such as A ≥ 93, A- ≥ 90, B+ ≥ 87. Adjusting inputs updates the grade instantly.
Required Score on the Final Exam
Formula: Required Final Score = (Target − Current × (1 − w)) ÷ w, where w is the final exam weight as a decimal. If the required score exceeds 100%, the calculator flags the target as impossible under current conditions.
GPA Calculation and Estimation
After converting to letters, map each grade to GPA points (A = 4.0, A- = 3.7, etc.). With credits, use: Σ(points × credits) ÷ Σ(credits). The SnipText Grade Calculator supports U.S. 4.0 GPA scales and allows custom GPA mappings for flexibility.
Worked Examples
- Weighted average: Exams 82% (60%), Quizzes 90% (20%), Homework 100% (20%) →
0.60×82 + 0.20×90 + 0.20×100 = 87.2%→ B+ (if cutoff is ≥ 87%). - Dropping lowest quiz: Quiz scores 6, 8, 10 → drop 6 → average(8,10) = 9 → 90% quiz average.
- Required final: Current 87.2%, final exam 30%, target 90% →
(90 − 87.2×0.70)/0.30 ≈ 95.3%. You’ll need about 95% on the final.
Semester Planning Workflow
- Enter categories and weights into the Grade Calculator and confirm totals = 100%.
- Input scores. Apply “drop lowest” if allowed and compare adjusted averages.
- Set your custom letter grade scale and GPA mapping. Save presets for later courses.
- Run “what-if” scenarios: simulate scores for labs, quizzes, or exams.
- Keep tables clean with the Quick Table Generator and Whitespace Cleaner.
- Plan study sessions with the Timeline Maker before high-weight assessments.
Frequently Asked Questions
- Can I customize weights and letter cutoffs?
- Yes. Enter any weights (ensuring they sum to 100%) and define your own letter grade cutoffs, including plus/minus grading.
- Can I import grades from a spreadsheet?
- Yes. Paste rows directly or format CSV data with the Quick Table Generator before pasting into the calculator.
- Does the calculator support credit-weighted GPA?
- Yes. Enter credits and letter mappings to compute term GPA and cumulative GPA projections.
- Will it work offline?
- Yes. Once loaded, calculations run locally in your browser. No sign-in or uploads are required.
- How do I calculate the required score on a final exam?
- Enter your current average, final exam weight, and target grade. The calculator instantly shows the exact percentage needed and flags unreachable targets.
Try It Now
Go to Grade Calculator — run weighted averages, GPA estimates, and “what-if” scenarios in seconds.