How to use this grade calculator
Switch to Weighted grade, add each syllabus category (Homework, Quizzes, Midterm, Final…), enter the weight % from your syllabus and your current score %, and watch the course average update live.
Need a target? Open What do I need on the final?, plug in your current average, how much of the course is already graded, the final’s weight, and the overall % you want. Instantly see the score required — including when the goal is already locked in or mathematically impossible.
Common U.S. letter grade scale
Plus/minus cutoffs vary by school. Always confirm the scale in your syllabus.
FAQ
How does a weighted grade calculator work?
Each category has a weight as a percent of the course. Multiply each score by its weight, add those products, then divide by total weight. If weights add to 100%, you get your course percentage directly.
How do I calculate what I need on my final?
Use: needed = (target × totalWeight − currentPoints) ÷ finalWeight. GradeCalc Lab does this for you when you enter current grade, weight so far, final weight, and target.
Do weights need to add to 100%?
Ideally yes. If not, we normalize by the total weight so the average stays correct, and show a warning so you can fix the syllabus numbers.
Is my data private?
Yes. Everything runs in your browser. Nothing is stored on a server or sent anywhere.
Is GradeCalc Lab free?
Completely free — no account, no paywall.
More free guides
Want the formula explained with examples?
How weighted grades work →