Grade Calculator

Add your assignments or categories with a score and a weight, and see your weighted class grade and letter grade update live. Everything runs in your browser — nothing is uploaded or stored.

📖 How it works & FAQ

How weighted grades work

Most classes don't treat every assignment equally. A final exam worth 30% of your grade matters six times more than a participation category worth 5%. A weighted grade multiplies each score by its weight, adds those products together, and divides by the total weight of everything that has been graded so far. In formula terms: grade = (score₁ × weight₁ + score₂ × weight₂ + …) ÷ (weight₁ + weight₂ + …). This calculator does that math live as you type, so you always know exactly where you stand in the class.

How to use it

Enter each assignment or category name, its score as a percentage, and its weight as a percentage of your final grade. The example rows show a typical syllabus — edit or remove them.
Click + Add assignment for more rows, or Remove to delete one.
Leave the score blank for anything not yet graded (like a future final exam). The weight is ignored until a score exists, so your current grade reflects only completed work.
Read your weighted average, letter grade, and total weight in the results. The weight line tells you whether your weights add up to 100% and how much is unassigned or over.

FAQ

Do my weights have to add up to exactly 100?: No. The calculator normalizes by the total weight of graded items, so the average is correct either way. The total-weight readout is there to help you match your syllabus, since most classes are designed to sum to 100%.
How do I handle assignments that aren't graded yet?: Add the row with its weight but leave the score blank. It won't count toward your current grade. Once the grade comes back, type in the score and the average updates instantly.
What letter-grade scale is used?: The common US scale: A+ at 97+, A at 93+, A− at 90+, then steps of roughly 3–4 points down through B, C, and D, with F below 60. Your school's cutoffs may differ, so check your syllabus for the official scale.
Can I use points instead of percentages?: Yes — convert first. Score % = points earned ÷ points possible × 100. For weights, use each category's share of total course points.