Grade Calculator — GPA, Percentage, Weighted & Final Exam Grade | CalcifyAll

Grade smarter,
in seconds.

GPA, weighted grades, test scores, final exam targets, percentage changes — one clean tool that covers everything US students actually need.

No sign-up Always free Works offline 7 calculators in one
Easy Grader
Set the number of questions, then drag or adjust wrong answers to see the grade instantly.
1 – 200 questions
020
Score
A
100%
20 correct out of 20 (0 wrong)
Correct
20
Wrong
0
Score
100 / 100
Grade
A+
Every possible score for 20 questions
WrongCorrectScore %Letter
Test Grade Calculator
Convert points earned out of total points into a percentage and letter grade. Add extra credit if applicable.
Added to points earned, not total
Test Grade
B
86.0%
Earned
86 / 100
Extra Credit
0
Effective Score
86.0%
Letter
B
Weighted Grade Calculator
List your assignments or categories with their weights to find your overall weighted average grade.
NameScore %Weight %
Weighted Average
—
0.0%
Weights Total
0%
Rows Used
0
Final Grade Calculator
Find the score you need on the final exam to reach your target course grade.
How much the final is worth in your overall grade
You need on the final
108%
to reach 90%
Current Grade
84%
Final Weight
25%
Tough — extra credit time
GPA Calculator
List your courses with letter grade and credit hours to calculate your cumulative GPA on the 4.0 scale.
CourseGradeCredits
Cumulative GPA
0.00
Total Credits
0
Quality Points
0.00
Standing
—
Percentage Calculator
Five of the most common percentage calculations — pick the one you need and get your answer instantly with step-by-step working shown.
e.g. 20 for “20% of 150”
Result
30
20% of 150 = 30
How it’s calculated
Result
20%
30 is 20% of 150
How it’s calculated
Percentage Increase
25%
80 → 100 is a 25% increase
How it’s calculated
Percentage Decrease
25%
100 → 75 is a 25% decrease
How it’s calculated
Percentage Difference
20%
90 and 110 differ by 20%
How it’s calculated
Grading Scale Reference
Standard US +/− letter grade cutoffs used across all calculators on this page.

One Tool for Every Grade Calculation US Students Need

Whether you’re a high school freshman trying to figure out what you got on a quiz, a college junior calculating the GPA you need for grad school applications, or a teacher building a grading curve — this tool covers it all in one place, without ads or sign-ups.

Most students jump between three or four different sites to handle what this single page does: convert test scores to letter grades, calculate weighted averages across assignments, figure out what they need on the final exam, and track their cumulative GPA on the 4.0 scale. Now add percentage increase, decrease, and “what is X% of Y” — and it’s genuinely everything.

📝 Students
Track GPA, check final exam scores needed, calculate weighted grades across courses.
👩‍🏫 Teachers
Use the Easy Grader to build a score chart for any quiz or test instantly.
👨‍👩‍👧 Parents
Check your child’s grade standing and see what scores they need to maintain their GPA.
📊 Everyone
Use percentage change to calculate discounts, salary increases, or price differences.

How to Calculate Percentages — The 5 Formulas You Actually Need

“Percentage calculator” is one of the most-searched tool queries in the US — and it makes sense, because percentages show up everywhere. Tax rates, discounts, grade scores, salary changes, tips, interest rates. The Percentage tab on this page covers five calculation types that cover nearly every real-world scenario:

Formulas

What is X% of Y? (e.g. “What is 15% of $80?”)
Result = (X ÷ 100) × Y
X is what percent of Y? (e.g. “30 is what % of 200?”)
Result = (X ÷ Y) × 100
Percentage Increase (e.g. salary went from $50,000 to $58,000)
% Increase = ((New − Old) ÷ Old) × 100
Percentage Decrease (e.g. price dropped from $120 to $90)
% Decrease = ((Old − New) ÷ Old) × 100
Percentage Difference (e.g. comparing two test scores)
% Difference = (|A − B| ÷ ((A + B) ÷ 2)) × 100

The calculator shows the full working for each — so you’re not just getting an answer, you’re seeing exactly how it’s calculated. That’s useful when you need to show your work or explain the result to someone else.

How GPA Is Calculated on the 4.0 Scale

GPA (Grade Point Average) is calculated by assigning point values to letter grades, multiplying by credit hours, summing everything up, and dividing by total credit hours. Most US colleges use either a simple 4.0 scale (A=4.0, B=3.0, C=2.0) or an extended plus/minus scale that adds steps between letters.

GPA Scale Reference

Simple 4.0 Scale
A=4.0 · B=3.0 · C=2.0 · D=1.0 · F=0.0
Plus/Minus Scale (most common in US colleges)
A+=4.0 · A=4.0 · A−=3.7 · B+=3.3 · B=3.0 · B−=2.7 · C+=2.3 · C=2.0 · C−=1.7 · D+=1.3 · D=1.0 · D−=0.7 · F=0.0
GPA Formula
GPA = Total Quality Points ÷ Total Credit Hours

Academic standings in the US typically follow this pattern: 3.7+ = Summa Cum Laude, 3.3–3.69 = Magna Cum Laude, 3.0–3.29 = Cum Laude, 2.0–2.99 = Good Standing, below 2.0 = Academic Probation at most institutions. Some schools set the Cum Laude threshold at 3.5 — check your institution’s handbook.

What Score Do You Need on Your Final Exam?

The Final Grade Calculator answers one of the most stressful questions in any semester: “What do I need on the final to get a B in this class?” The formula uses your current grade, your target grade, and how much the final is worth as a percentage of your overall course grade.

For example, if your current grade is 82%, you want a 90% in the course, and the final is worth 30% of your grade, you’d need a score of about 108.7% — which means you mathematically can’t reach 90% without extra credit. The calculator will tell you this clearly and show a verdict so you know exactly where you stand.

Practical tip: Most US college finals are worth between 20% and 40% of the course grade. If yours is worth 25% or less, your current grade carries most of the weight — which is both reassuring and motivating depending on where you are right now.

Frequently Asked Questions

The questions students actually search for — answered straight, no fluff.

In high school, a GPA of 3.5 or higher (on a 4.0 scale) is generally considered strong for college applications. The national average high school GPA is around 3.0. In college, a GPA of 3.0 or above puts you in good academic standing at most institutions. A 3.5+ is typically required for Latin honors (Cum Laude, Magna Cum Laude), and many competitive graduate programs look for a 3.5 or higher. For law school and medical school, 3.7+ is generally competitive. The “good GPA” bar shifts significantly depending on your major, school, and what you plan to do after graduation.
Divide your points earned by the total points possible, then multiply by 100. For example, if you got 43 out of 50 questions correct: (43 ÷ 50) × 100 = 86%. That’s a B on the standard US grading scale (83–86.99%). Use the Test Grade tab above — just type in your points earned and the total, and it converts it to a percentage and letter grade automatically.
A weighted grade gives different assignments different levels of importance. For example, if homework counts for 20% of your grade, your midterm 40%, and your final 40%, those are the weights. To calculate your weighted average: multiply each score by its weight, add up all those results, and divide by the total weight. Most courses in US colleges and universities use weighted grading — the syllabus will tell you each component’s weight. The Weighted tab above does all of this automatically for as many rows as you need.
For percentage increase: subtract the old value from the new value, divide by the old value, and multiply by 100. Example: price went from $80 to $100 — that’s ((100−80)÷80)×100 = 25% increase. For percentage decrease, the formula is the same but you’ll get a positive number representing how much it dropped. The Percentage tab above shows the full step-by-step calculation so you can see exactly where the number comes from.
Percentage change has a clear direction — it goes from an old value to a new value, so it can be an increase or a decrease. Percentage difference has no direction; it just measures how far apart two values are relative to their average. You’d use percentage change to describe a salary raise or a price drop. You’d use percentage difference to compare two test scores, two product prices, or two measurements where neither one is the “starting point.” The formulas are different, and mixing them up gives you the wrong answer.
A grading curve adjusts scores so that the class distribution shifts upward — typically because the exam was harder than intended. The most common curve type adds a fixed number of points to every score (e.g. everyone gets +7 points). Another method sets the highest score in the class as 100 and scales everyone else proportionally. The Easy Grader tab shows every possible score for a given number of questions, so you can quickly see how different raw scores translate to percentages and letter grades — which is exactly what teachers use when designing a curve.
On the standard US grading scale: A is 90–100%, B is 80–89%, C is 70–79%, D is 60–69%, and F is below 60%. With plus/minus grading: A+ is 97–100, A is 93–96, A− is 90–92, B+ is 87–89, B is 83–86, B− is 80–82, and so on in three-point steps down to D−. Some schools use slightly different cutoffs — check the Scale tab on this page or your course syllabus to confirm.
Yes. The GPA tab uses the standard 4.0 scale that both high schools and colleges use across the US. For high school, credit hours work the same way — just enter the number of credits each class is worth (usually 1 per full-year course or 0.5 per semester course). For weighted high school GPA (where AP or honors classes add a 0.5 or 1.0 bonus to grade points), you’d need to adjust the grade point value manually — for example, entering a B in an AP class as a 3.5 instead of 3.0 if your school adds 0.5 for AP courses.
“What is X% of Y” is one of the most searched percentage questions online, and it comes up constantly in real life: calculating a 20% tip on a $65 restaurant bill ($13), finding 30% off a sale price, understanding that a 15% tax on a $200 item adds $30, or figuring out how much of your paycheck goes to federal taxes. The formula is always: (percentage ÷ 100) × number. So 20% of 350 = (20÷100) × 350 = 70. The Percentage tab above calculates this instantly and shows the step-by-step working.
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