Calculate 42 out of 50
Calculation: 42 ÷ 50 = 0.84; 0.84 × 100 = 84%
Answer: 84%, commonly a B
Grade Calculator
Enter points earned and points possible to calculate a test, quiz, or assignment grade percentage.
Calculate your grade
Example: 42 points earned out of 50 possible points
How to calculate a grade percentage
Divide points earned by total points possible, then multiply the result by 100. This gives your score as a percentage.
Grade percentage formula
Grade percentage = (points earned ÷ points possible) × 100
For example, earning 42 points out of 50 gives 42 ÷ 50 = 0.84. Multiply 0.84 by 100 to get an 84% grade.
Letter grades vary: The letter shown by this calculator
uses a common U.S. grading scale. Your school, instructor, or course may
use different ranges, rounding rules, weighting, curves, or plus/minus grades.
Common letter-grade scale
This calculator uses the following simple reference scale for its letter-grade estimate.
A
90–100%
B
80–89.99%
C
70–79.99%
D
60–69.99%
F
Below 60%
—
Custom scales vary
Examples
Calculate 18 out of 20
Calculation: 18 ÷ 20 = 0.9; 0.9 × 100 = 90%
Answer: 90%, commonly an A
Calculate 37.5 out of 45
Calculation: 37.5 ÷ 45 = 0.83333...; × 100 = 83.33%
Answer: 83.33%, commonly a B
Frequently asked questions
How do I calculate my test grade?
Divide the points you earned by the total possible points and multiply by 100. For example, 18 out of 20 is 90%.
What grade is 42 out of 50?
42 out of 50 equals 84%. On the common scale used here, that is a B.
Can a grade be above 100%?
Yes. A score can exceed 100% when points earned exceed the listed points possible, such as when extra credit is included.
Does this calculate weighted course grades?
No. This page calculates one points-based score. Weighted course grades require each assignment or category grade and its percentage weight.