GradeCalculate

Grade Percentage Calculator

Convert points earned out of points possible into an exact percentage and letter grade, or convert any percentage into a 4.0 GPA scale equivalent with custom rounding.

Need to build or curve a whole grading scale? While this Grade Percentage Calculator converts individual assignment scores into exact percentage grades, our Grading Scale Calculator allows teachers and students to customize letter grade thresholds, generate complete points-to-letter conversion tables, and calculate curved exam distributions.

Enter Assignment Points

Calculate exact grade percentage from earned and possible points.

Multi-Assignment Cumulative Totals

Your score on test or assignment

Total possible points without extra credit

Popular Common Scores
Rounding Precision

Teacher Policy Note: Scores like 89.5% round up to 90% (A-) under 0-decimal standard rounding, but remain in the B+ band under unrounded truncation. Always check your syllabus policy.

Calculated Grade
72%
Grade: C-1.7 GPA
0%Scale Position (72%)100%
Points Earned:18
Points Possible:25
Points Missed:-7 pts
Substituted Calculation Formula
18 ÷ 25 × 100 = 72%
100% Client-Side, Instant & Private

How to Calculate a Grade Percentage

To calculate a grade percentage, divide the total points earned by the maximum points possible and multiply the result by 100. This mathematical calculation normalizes any raw score onto a standardized 100-point scale, allowing teachers and students to compare academic performance across tests, quizzes, homework assignments, and laboratory reports of varying point lengths.

1

Divide Points Earned

Take your points earned and divide by the total possible points. For example, scoring 18 out of 25 yields 18 ÷ 25 = 0.72.

2

Multiply by 100

Multiply your decimal fraction by 100 to convert it into a standard percentage: 0.72 × 100 = 72.00%.

3

Assign Letter Grade

Compare your percentage against your course syllabus grading thresholds. A score of 72.00% corresponds to a C- (1.7 GPA).

Grade Percentage Formula

The grade percentage formula expresses earned points as a fraction of total available points multiplied by one hundred:

Grade Percentage (%) = Points EarnedPoints Possible × 100

When extra credit is awarded, Points Earned can exceed Points Possible, producing a grade percentage greater than 100.00%.

Points to Percentage Chart

Use this points-to-percentage reference table to quickly evaluate common test and assignment scores across totals of 10, 20, 25, 50, and 100 points:

Total PointsPoints EarnedCalculated %Letter Grade4.0 GPA Scale
Out of 109.0 / 1090.00%A-3.7
Out of 108.0 / 1080.00%B-2.7
Out of 2018.0 / 2090.00%A-3.7
Out of 2015.0 / 2075.00%C2.0
Out of 2523.0 / 2592.00%A-3.7
Out of 2518.0 / 2572.00%C-1.7
Out of 5045.0 / 5090.00%A-3.7
Out of 5042.0 / 5084.00%B3.0
Out of 10094.0 / 10094.00%A4.0
Out of 10078.0 / 10078.00%C+2.3

Percentage to Letter Grade Chart

The standard North American academic grading scale converts percentages into 13 letter grade bands and corresponding 4.0 grade point averages (GPA):

Letter GradePercentage Band4.0 Scale GPAAcademic Performance Status
A+97.0% – 100%+4.0Exceptional Mastery
A93.0% – 96.9%4.0Superior Understanding
A-90.0% – 92.9%3.7Excellent Achievement
B+87.0% – 89.9%3.3Very Good (Above Average)
B83.0% – 86.9%3.0Good (Solid Competency)
B-80.0% – 82.9%2.7Satisfactory Competency
C+77.0% – 79.9%2.3Fair (Average)
C73.0% – 76.9%2.0Acceptable Minimum for Majors
C-70.0% – 72.9%1.7Passing (Below Average)
D+67.0% – 69.9%1.3Marginal Passing
D63.0% – 66.9%1.0Poor (Passing Credit Only)
D-60.0% – 62.9%0.7Lowest Passing Threshold
FBelow 60.0%0.0Failing (No Credit Awarded)

How to Calculate a Percentage Across Multiple Assignments

To calculate an overall cumulative grade percentage across multiple assignments in an unweighted points-based course, sum all points earned and divide by the sum of all points possible. Do not simply average the individual assignment percentages together, because assignments with higher possible point values carry proportionally greater point weight.

Worked Example: 4 Course Assignments

Quiz 1:18 points earned out of 20 possible (90.00%)
Quiz 2:22 points earned out of 25 possible (88.00%)
Midterm Exam:88 points earned out of 100 possible (88.00%)
Course Project:47 points earned out of 50 possible (94.00%)

Step 1: Sum Total Earned Points: 18 + 22 + 88 + 47 = 175 points

Step 2: Sum Total Possible Points: 20 + 25 + 100 + 50 = 195 points

Step 3: Calculate Cumulative Percentage: (175 ÷ 195) × 100 = 89.74% (B+ Letter Grade, 3.3 GPA)

Does 89.5 Round Up to an A?

An 89.5% rounds up to a 90.0% (A- or A) if your school or teacher enforces standard half-up mathematical rounding, but remains a B+ (89.5%) if your teacher grades by unrounded truncation.

In academic grading policies, two main rounding conventions exist:

  • Standard Rounding (0 decimal places): Any fractional score with 0.5 or above rounds up to the next integer. An 89.50% becomes a 90%, promoting the student to an A- (or A on a standard 10-point scale).
  • Strict Truncation / Syllabus Policy: Automated electronic gradebooks often enforce strict decimal cutoffs (e.g. 90.00% strict minimum). In these systems, an 89.50% falls exactly 0.50% short of the required threshold and remains a B+.

Grade Percentage vs Weighted Grade

A grade percentage calculates the raw arithmetic ratio of points earned out of points possible in an unweighted system, whereas a weighted grade multiplies scores by specific category percentage weights (such as 40% exams and 20% homework) before summing. In a simple unweighted points system, a 100-point exam naturally carries ten times the mathematical weight of a 10-point quiz. In contrast, in a weighted syllabus, homework assignments worth 20% of the overall course grade maintain that exact 20% weight regardless of how many individual points they contain. If your course uses category weights, use our dedicated Weighted Grade Calculator to compute your accurate average.

Frequently Asked Questions

What is 18 out of 25 as a percentage?

18 out of 25 is exactly 72.00%. To calculate it, divide 18 by 25 to get 0.72, then multiply by 100 to reach 72.00%. On a standard 13-grade scale, 72% corresponds to a C- letter grade (1.7 GPA).

What grade is 45 out of 60?

45 out of 60 equals exactly 75.00%. Dividing 45 by 60 gives 0.75, which equals 75% when multiplied by 100. On a standard grading scale, 75.00% is a solid C letter grade (2.0 GPA).

What letter grade is 78 percent?

78 percent is a C+ on standard plus/minus grading scales (covering 77.0% to 79.9%), earning 2.3 grade points on a 4.0 GPA scale. On simplified scales without plus/minus distinctions, 78% falls into the standard C band.

Is 89.5 an A or a B?

An 89.5% mathematically sits in the high B+ band (87.0% to 89.9%). However, if your school or teacher rounds to the nearest whole integer (0 decimal places), 89.5% rounds up to 90%, earning an A- (or A on non-plus/minus scales). If your institution does not round or truncates decimal points, it remains a B+.

How do I calculate my grade percentage?

To calculate your grade percentage, divide total points earned by total points possible and multiply by 100: Grade % = (Points Earned ÷ Points Possible) × 100. For instance, scoring 42 points out of 50 gives (42 ÷ 50) × 100 = 84% (B).

What percentage is 12 out of 15?

12 out of 15 is 80.00%. The mathematical calculation is 12 ÷ 15 = 0.80, and 0.80 × 100 = 80.00%. On standard grading scales, 80% is a B- (2.7 GPA) or a B on a 10-point scale.

What is a passing percentage?

In most North American high schools and undergraduate programs, 60.0% (D- or D) is the minimum threshold to earn course credit. However, major prerequisite coursework, honors programs, and graduate degrees frequently require at least 70.0% (C- or C) to satisfy progression standards.

How do I convert a percentage to a GPA?

To convert a percentage to a GPA on a 4.0 scale, identify the letter grade corresponding to your percentage: 93%+ = 4.0 (A), 90-92% = 3.7 (A-), 87-89% = 3.3 (B+), 83-86% = 3.0 (B), 80-82% = 2.7 (B-), 77-79% = 2.3 (C+), 73-76% = 2.0 (C), 70-72% = 1.7 (C-), 67-69% = 1.3 (D+), 63-66% = 1.0 (D), 60-62% = 0.7 (D-), and below 60% = 0.0 (F).