What grade do I need on my final exam?

Use this formula: Required final score = (Desired grade - Current grade × (1 - Final weight)) ÷ Final weight. Example: Current grade 82%, want 90%, final is worth 30%. Required = (0.90 - 0.82×0.70) ÷ 0.30 = (0.90 - 0.574) ÷ 0.30 = 108.7%. If over 100%, the desired grade is not achievable.

How do I calculate a weighted grade average?

Weighted average = Sum of (each grade × its weight) ÷ Sum of all weights. Example: 3 tests with scores 85, 72, 91 worth 20%, 20%, 20% each, plus homework 88 worth 40%. Weighted average = (85×20 + 72×20 + 91×20 + 88×40) ÷ 100 = (1700+1440+1820+3520) ÷ 100 = 84.8%.

Does this grade calculator work for any grading scale?

Yes. You can enter any scores and weights, so it works for a 100-point scale, a 10-point scale, or any custom system your school uses. The grade scale table on this page shows the most common US 100-point breakdown, but your syllabus is the authoritative source for your class.

Grade Calculator

Calculate your current grade, final exam score needed, and weighted grade average. Works for high school and college.

How to Use the Grade Calculator

1Choose Weighted Grade, Final Exam Needed, or Simple Average above.
2Enter each score and, for weighted mode, its weight percentage.
3Add or remove rows as needed for all your assignments and tests.
4Your grade percentage and letter grade update automatically.

Weighted Grade Calculator

Enter each assignment/category with its score and weight percentage. Weights should add up to 100%.

Assignment / Category

Score (%)

Weight %

Why Weighted Grades Matter

Most high school and college courses don't treat every assignment equally. A final exam might count for 30–40% of your grade, while weekly homework counts for only 10–20%. This means a strong final exam score can significantly raise (or a weak one can significantly lower) your overall grade — even if your homework average looks great. Understanding your course's weight breakdown, usually listed in the syllabus, is the first step to knowing exactly where to focus your study time. Our weighted grade calculator lets you enter each category separately so you can see precisely how each piece contributes to your final percentage.

Standard Grade Scale — A to F

Letter Grade	Percentage Range	GPA Points (4.0)	Meaning
A+	97–100%	4.0	Exceptional
A	93–96%	4.0	Excellent
A-	90–92%	3.7	Excellent
B+	87–89%	3.3	Good
B	83–86%	3.0	Good
B-	80–82%	2.7	Good
C+	77–79%	2.3	Average
C	73–76%	2.0	Average
C-	70–72%	1.7	Average
D+	67–69%	1.3	Below Average
D	63–66%	1.0	Passing (barely)
D-	60–62%	0.7	Passing (barely)
F	Below 60%	0.0	Failing

Frequently Asked Questions

How do I calculate my final grade? +

Multiply each score by its weight percentage and add them together. Example: Homework 88% × 0.20 = 17.6, Midterm 79% × 0.30 = 23.7, Final 85% × 0.30 = 25.5, Quizzes 91% × 0.20 = 18.2. Total = 85.0%.

What score do I need on my final exam? +

Formula: Required score = (Desired grade − Current grade × (1 − Final weight)) ÷ Final weight. Example: Current 83%, want 90%, final worth 30%: (0.90 − 0.83×0.70) ÷ 0.30 = (0.90 − 0.581) ÷ 0.30 = 106.3%. Above 100% means the desired grade is not achievable.

What is a passing grade in college? +

In most US colleges, D (60-69%) technically passes but earns only 1.0 GPA. Most programs require C or better for major courses. Graduate programs often require B (80%) minimum. Always check your school's specific policy.

How is GPA calculated from letter grades? +

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, F=0.0. Multiply each course's GPA points by its credit hours, add them up, and divide by total credit hours. Use our GPA calculator for the full calculation.

Does this calculator work for any grading scale? +

Yes. You can enter any scores and weights, so this works whether your school uses a 100-point scale, a 10-point letter grade scale, or a different system entirely. The grade scale table on this page shows the most common US 100-point breakdown, but your instructor's syllabus is always the authoritative source for your specific class.