Useful for
- Check everyday numbers before making a purchase, quote, or budget decision.
- Compare inputs quickly when you do not want to open a spreadsheet.
- Verify math for work, school, invoices, ads, or personal planning.
Grade Calculator
Calculate a weighted average grade from assignment scores and their weights.
Weighted Average
—
Letter Grade
—
Total Weight
—
Tool guide
How to use Grade Calculator
Grade Calculator gives you a focused way to handle one small task quickly. Calculate a weighted average grade and letter grade from scores and weights. It is free to use, requires no login, and is built for quick checks when you need a practical result.
Example
For example, use Grade Calculator to enter the values from a receipt, estimate, campaign report, or planning note, then copy the result into your document or message.
Good to know
Results are meant for quick planning and double-checking. For legal, tax, or financial decisions, review the numbers with a qualified professional.
How it works
The grade calculator computes a weighted average from multiple assignment scores and their percentage weights, then shows the corresponding letter grade.
Weighted average = sum of (grade × weight) / sum of weights.
Practical examples
- Three assignments at 85% (weight 40), 92% (weight 35), and 78% (weight 25) give a weighted average of about 85.7% — a B.
- Add or remove rows to match the number of graded items in a course.
- Check what score is needed on a final to reach a target grade.
Common mistakes
- Make sure weights add up to 100% for accurate results. If total weight is not 100%, the result is still correct as a weighted average but may not match a course syllabus.
- Letter grade thresholds can vary by school. The default A/B/C/D/F scale shown here is common but not universal.
Questions
What if my weights do not add to 100%?
The calculator still gives an accurate weighted average. It divides by the total weight you enter.
Can I use this for GPA?
This calculates a weighted percentage average. GPA uses grade points (4.0 scale) and may have different rules.