Enter your total questions and correct answers, or use the score already shown for this page.
| Grade | Correct | Incorrect | Percent | GPA |
|---|
What Is 20 out of 30? Percentage, Grade & GPA
By Sachin Yadav
20 out of 30 works out to 66.67 percent, which lands as a D+ on the standard scale, 6.67 points past the 60% passing line. A teacher totaling an economics quiz, a parent checking a report card entry, or a student confirming twenty correct answers on a longer test all reach this same result. This page breaks down the percentage, the letter grade, and the GPA points behind 20 out of 30, and how it compares to a passing score. Enter any score into the calculator above for an instant result.
What does 20 out of 30 mean?
| Metric | Value |
|---|---|
| Correct answers | 20 |
| Total questions | 30 |
| Percentage | 66.67% |
| Letter grade | D+ |
| GPA points | 1.3 |
The formula behind every score on this site is simple:
Percentage = (Correct ÷ Total) × 100
For 20 out of 30, that’s (20 ÷ 30) × 100 = 66.67%. Two-thirds of the questions correct is a clear pass, though the score still sits a few points shy of the C range most schools treat as an average grade.
20/30 grade: complete US grading scale
Most US schools grade on a version of this scale. 20 out of 30 falls into the D+ row, the highest of the D grades before the scale moves into C territory.
| Percentage | Letter grade | GPA points |
|---|---|---|
| 97-100 | A+ | 4.0 |
| 93-96 | A | 4.0 |
| 90-92 | A- | 3.7 |
| 87-89 | B+ | 3.3 |
| 83-86 | B | 3.0 |
| 80-82 | B- | 2.7 |
| 77-79 | C+ | 2.3 |
| 73-76 | C | 2.0 |
| 70-72 | C- | 1.7 |
| 67-69 | D+ (66.67%) | 1.3 |
| 63-66 | D | 1.0 |
| 60-62 | D- | 0.7 |
| Below 60 | F | 0.0 |
Early report cards in the 1800s often used simple “pass” or “fail” marks instead of letters, and most US schools didn’t widely adopt the A-to-F range until well into the 20th century.
How to use the grade calculator
Using the tool above takes three steps.
- Enter the total number of questions, 30 in this case, into the first field.
- Enter the number of correct answers, 20 here, into the second field.
- The calculator shows the percentage, letter grade, and GPA points right away.
An 8th grade teacher in Iowa grading a 30-question economics quiz can enter each student’s raw score and see the letter grade instantly instead of computing the fraction by hand for every paper. The tool also supports a GPA mode for report cards and a pass/fail mode for courses that don’t use letter grades.
Real-world examples
An 8th grade teacher in Kansas grades a psychology quiz where a student answers 20 out of 30 questions correctly after mixing up two theory-based questions.
A high school student in Kentucky checks a 30-question sociology test and finds 20 answers marked correct after running short on review time.
A college student in Louisiana submits an environmental science quiz and scores 20 out of 30 after struggling with the data interpretation questions.
When not to rely only on this calculator
This tool calculates a raw percentage from correct answers out of total questions, so a few situations need extra steps.
Weighted grades: if the 30 questions count for only part of a semester grade, use the weighted grade calculator instead.
Curved tests: apply any class curve before checking the letter grade here.
Pass/fail courses: some programs require a C or higher for credit, even though 20 out of 30 clears the standard 60% cutoff by a healthy margin. Check the passing score calculator for a specific policy.
Semester GPA: one test score isn’t a full semester GPA. Combine multiple grades with the GPA calculator.
Instructor disputes: this calculator confirms the math is correct. Any disagreement about the score itself belongs with the teacher.
Frequently asked questions
Is 20 out of 30 a good grade?
It’s below average. 20 out of 30 is 66.67%, a D+ on the standard scale. It passes comfortably but falls short of the C range.
What is 20/30 as a percentage?
20 out of 30 equals 66.67%.
What GPA is 20 out of 30?
20 out of 30 converts to 1.3 grade points on the standard 4.0 GPA scale.
Is 20 out of 30 passing?
Yes. Most US schools set the passing mark at 60%, and 20 out of 30 clears that line by 6.67 points. Check a specific school’s policy with the final grade calculator.
Sources: ERIC | National Center for Education Statistics | U.S. Department of Education
Related tool: Average grade calculator