Grade Calculator - Calculate Your Final Course Grade

How to Calculate Your Grade

Pick the method that matches how your class works. Got a teacher who weighs tests more than homework? Use weighted categories. Everything counts the same? That's simple average.

Simple Average

Add up all your percentages and divide by how many you have. Every assignment counts the same. If you got 80%, 90%, and 85%, that's 255 ÷ 3 = 85%.

Works great when all your assignments are similar—like if you have five homework assignments worth the same amount. But it's not realistic if you're comparing a three-hour final exam to a 10-minute quiz.

Points-Based

This is what most teachers actually use. Enter points earned and points possible. A 100-point test automatically matters more than a 10-point homework. You got 90/100 on a test and 45/50 on homework. That's 135 points out of 150 possible = 90%. The test naturally counts more because it's worth more points.

Weighted Categories

Different types of assignments count for different percentages of your final grade—homework is 20%, tests are 50%, final exam is 30%. Super common in high school and college.

Add your categories (homework, tests, quizzes, whatever), give each one a weight, then add your assignments within each category. We'll do the math.

Final Exam Calculator

Sometimes you'll find out you need 120% to get an A. That means it's impossible—but we'll show you the highest grade you can actually get. Enter your current grade, what it's worth, your target grade, and the final's weight. We'll tell you if you need a 94% or if you can coast with a 70%.

What's a Final Grade?

Your final grade is everything rolled into one number. All the homework, tests, quizzes, projects, and that final exam—combined. It's what shows up on your report card and transcript.

Current Grade vs Final Grade

Your current grade isn't your final grade if you haven't taken the final exam yet. Your current grade is where you're at right now—that number you obsessively check on the grade portal every day.

Your final grade is official. End of semester. Includes everything, especially that final exam you're stressing about. Once it's on your transcript, it's permanent.

Most teachers don't include the final exam weight in your current grade until you actually take it. So if you've got an 88% right now and the final is 25% of your grade, you can't just assume you'll end with an 88%. The final will change everything.

Simple Average vs Points-Based

Add all your percentages, divide by how many you have—that's simple average. 80% + 90% + 85% = 255 ÷ 3 = 85%. Every assignment counts exactly the same, whether it's a massive project or a two-question quiz.

Points-based makes way more sense for actual classes. Bigger assignments automatically carry more weight. If you got 85/100 on that test and 47/50 on homework, that's 132/150 = 88%. The 100-point test impacts your grade twice as much as the 50-point homework.

Letter Grade Scale

Most schools use the standard scale: A = 90-100, B = 80-89, C = 70-79, D = 60-69, F = below 60. But some schools are stricter (93+ for an A) or use plus/minus grades (B+ vs B vs B-).

Check your syllabus. Don't just assume. I've seen schools where 85% is a B+ and others where it's barely a B.

Letter grades matter because they're what shows up on your transcript. Colleges see "B+" not "87.4%." That's why even half a percentage point can matter when you're right on a borderline.

How Weighted Grades Work

Your teacher decides how much each type of assignment counts. Homework might be 20%, tests 40%, projects 20%, and the final exam 20%. They add up to 100%.

The Math

Say homework is 20% of your grade and you're averaging 88% on homework. That homework contributes 88 × 0.20 = 17.6 points to your final grade (out of 100). Do that for each category, add them up, done.

Example: Homework (20% weight) averaging 88% contributes 17.6 points. Tests (40% weight) averaging 82% contributes 32.8 points. Projects (20% weight) averaging 90% contributes 18 points. Final Exam (20% weight) at 85% contributes 17 points. Total: 17.6 + 32.8 + 18 + 17 = 85.4%

Why Teachers Do This

Teachers weight what matters most. Think tests show mastery better than homework? They'll make tests 50% of your grade. Homework might only be 10% because it's more about practice than proving you know the material.

A 10-minute quiz shouldn't impact your grade as much as a final exam. Makes sense.

The Catch

You can't just look at one category. You might have a 95% average on homework but if homework is only 10% of your grade and you're getting 70% on tests (which are 50% of your grade), you're still probably failing the class.

Focus your energy on the categories with the highest weights. That's where your grade actually gets decided.

Common Mistakes

Mixing Up Simple Average and Points-Based

Your teacher uses points? Don't average percentages. You got 85/100 on a test and 48/50 on homework. If you calculate (85 + 48) ÷ 2 = 66.5%, that's completely wrong. Do this instead: (85 + 48) ÷ (100 + 50) = 133/150 = 88.7%

Forgetting the Final Isn't Included Yet

Another mistake: You check your grade, see 85%, think you've got a B locked in. Nope. That 85% doesn't include the final, which is 25% of your grade. Bomb the final and watch that B become a C. Check if your current grade includes everything or if major work's still coming.

Not Reading Your Syllabus

Some teachers drop your lowest quiz. Some allow test corrections. Some have attendance as part of your grade. Read your syllabus.

If your teacher drops the lowest grade, don't include it in your calculation. That 40% you got on quiz 2? Might not even count.

Rounding Too Early

Say you have 84.4%, 88.6%, and 92.4%. Round each one first (84, 89, 92) then average? You'll get 88.33%. But the real average is 88.47%—that's a 0.14% difference that could matter if you're on a grade boundary. Keep decimals until the end.