CalcLoft
Student

Grade Calculator

Avg
Avg
Exam
Exam
Current grade
Need 92.56% on what's left
88.62% · B+
Weights graded: 65% of 100% entered
Your work
Homework95%
Weight 20% · 95/100adds +29.2 pts
Quizzes88%
Weight 20% · 88/100adds +27.1 pts
Midterm84%
Weight 25% · 84/100adds +32.3 pts
FinalUngraded
Weight 35%—
Weight breakdown
Homework 95%Quizzes 88%Midterm 84%
Goal: what do I need to finish?
Need 92.56%

You need 92.56% on the remaining 35% of your grade to finish at A- (90%+).

Enter every assignment as a score out of its maximum, give each one a weight, and this grade calculator returns your overall percentage and letter grade. It divides the sum of (score ÷ max × weight) by the total weight, so weights need not add to 100 — four equal categories or four 25-point weights give the same result.

The formula

grade % = Σ(score ÷ max × weight) ÷ Σ(weight) × 100

Each row contributes its earned fraction times its weight; dividing by the total weight gives the weighted average, then ×100 turns it into a percentage.

How to use it

  1. 1

    Enter each score out of its maximum

    Type what you earned and what it was out of — 88 out of 100, or 17 out of 20. The row's percentage is computed for you.

  2. 2

    Set each weight

    Give homework, quizzes, and exams their syllabus weights. They can be percentages (40, 30, 30) or any numbers — only the ratio matters.

  3. 3

    Read your overall grade

    The result updates instantly with your weighted percentage and the matching letter grade on the standard US scale.

Frequently asked questions

Do the weights have to add up to 100?
No. The calculator normalizes by the total weight you enter, so 40/30/30 and 4/3/3 produce the same grade. Use whatever numbers match your syllabus.
What letter grade does each percentage map to?
It uses the common US scale: 93+ is an A, 90–92 an A-, 87–89 a B+, and so on down to F below 60. Your school's cutoffs may differ slightly.
Can I leave a category blank?
Yes. Rows with a blank or zero maximum are skipped, so you can compute your grade so far before the final exam is entered.

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Part of Student Calculators. Last updated 2026-06-14.