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Grade Calculator

Calculate your final grade based on weighted assignments.

Last updated: June 13, 2026

Calculator

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Results

Weighted Grade83.4%

B

Total Weight Used100%

Weights sum to 100%

How to Use This Calculator

  1. 1Enter your average score for each category (homework, quizzes, midterm, final).
  2. 2Enter the weight for each category as a percentage.
  3. 3Ensure weights add up to 100%.
  4. 4View your weighted grade and letter grade.

Formula Explanation

Your final grade is a weighted average of all assignment categories. Each category contributes proportionally to its weight.

Final Grade = Σ(Score × Weight%) ÷ Σ(Weights)

Variables:

ScoreYour average percentage in each category
WeightHow much each category counts toward the final grade

Worked Examples

HW: 88% (20%), Quiz: 82% (15%), Mid: 78% (25%), Final: 85% (40%)

  1. 1. HW: 88×0.20=17.6, Quiz: 82×0.15=12.3
  2. 2. Mid: 78×0.25=19.5, Final: 85×0.40=34
  3. 3. Total: 83.4%
Result: Weighted grade: 83.4% (B)

Why Use This Calculator

  • Calculate your exact weighted average.
  • Supports up to 4 assignment categories.
  • Warns if weights don't sum to 100%.
  • Shows corresponding letter grade.
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Tips & Best Practices

  • Most college courses weight final exams at 30-40% of the total grade.
  • If you're behind, focus study time on the highest-weighted categories.
  • Some professors offer extra credit that can push your grade above 100%.

Common Mistakes to Avoid

❌ Assuming all categories are weighted equally.

✅ A final exam worth 40% of your grade has double the impact of homework worth 20%. Always check the syllabus for exact weights.

❌ Adding weights that don't total 100%.

✅ Weights should always sum to 100%. If they don't, you may be missing a category or have entered incorrect values.

Frequently Asked Questions

What letter grade is an 83%?
An 83% is typically a B on the standard grading scale (83-86% = B). However, grading scales can vary by institution.
Can I still get an A if I failed the midterm?
It depends on the weight of the midterm. If the midterm is only 25% of the grade and you score well on other components (especially a heavily weighted final), it may be possible.
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Disclaimer: This calculator is provided for informational and educational purposes only. Results are estimates and should not be used as a substitute for professional advice. RediCalc.com makes no guarantees regarding the accuracy, completeness, or suitability of any calculations. Always consult a qualified professional before making financial, health, construction, or other important decisions.

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