Grade Calculator

Divide 42 by 50 to get 0.84, then multiply by 100 to get 84%. That is a solid B on most US grading scales. If your school uses a plus/minus system, 84% is typically a B. To find your overall course grade, you would need to average this with other assignments, especially if they are weighted. For example, if this quiz is worth 20% of your grade and you have an 88% on everything else, your final grade would be (0.20 × 84) + (0.80 × 88) = 16.8 + 70.4 = 87.2%, a B+. If you need to convert that to a GPA, use our GPA Calculator.

A 75% is a C in most US schools. On a standard scale, 70–79% is a C, 80–89% is a B, and 90–100% is an A. Some schools use a plus/minus system where 77–79% is a C+, 73–76% is a C, and 70–72% is a C-. A 75% is just above the middle of the C range. If you are aiming for a B, you need at least 80%, which means earning 5 more percentage points. For a 100-point assignment, that is 5 more points. To see how this affects your overall GPA, try our GPA Calculator.

A weighted grade multiplies each category score by its weight, then adds the results. For example, if tests are 50%, homework 30%, and quizzes 20%, and you scored 85% on tests, 90% on homework, and 80% on quizzes, the calculation is (0.50 × 85) + (0.30 × 90) + (0.20 × 80) = 42.5 + 27 + 16 = 85.5%. That is your overall grade. This simple grade calculator only handles unweighted percentages, so you would need to run each category separately and then apply the weights manually. If you have many categories, a spreadsheet or a dedicated weighted grade calculator can save time. After you have the final percentage, use our GPA Calculator to convert it to a 4.0 scale.

A 3.5 GPA typically corresponds to a percentage between 87% and 89%, depending on your school's conversion scale. On a common 4.0 scale, a 3.5 is halfway between a B+ (3.3) and an A- (3.7). Many colleges map 87–89% to a B+ or A-, which averages to about 3.5. For example, if you have a 3.5 GPA and want to raise it to 3.7, you would need mostly A- grades (90–92%) in your next courses. The exact percentage varies by institution, so check your school's grading policy. To calculate your current GPA from letter grades, use our GPA Calculator.

The number of points depends on the total points possible. A 90% means you earned 90% of the available points. For a 100-point exam, you need 90 points. For a 50-point quiz, you need 45 points (0.90 × 50 = 45). For a 20-point homework, you need 18 points. If you scored 85 out of 100, that is 85%, which is a B. To reach 90%, you need 5 more points. Understanding this helps you set targets: if you have a 200-point final exam and want a 90%, you need 180 correct answers. Use this calculator to check any score quickly.

In most US colleges, a passing grade is a D or higher, which is typically 60% or above. However, many majors require a C (70–79%) or better in core courses. For example, a nursing program might require a C+ (77%) in anatomy, while a business school might accept a C- (70%) in economics. A 65% is a D and usually counts as passing for elective credits, but it may not satisfy prerequisites. If you are aiming for graduate school, you generally need a B average (80–89%) or higher. To see how your grades convert to a GPA, use our GPA Calculator.