What Is 27 out of 30? Percentage, Grade & GPA

By Sachin Yadav

27 out of 30 lands right at 90 percent, which puts it in A- territory on the standard scale, a full 30 points past the 60% passing line. A teacher totaling a computer science quiz, a parent checking a report card entry, or a student confirming twenty-seven 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 27 out of 30, and why it marks the entry point into excellent territory. Enter any score into the calculator above for an instant result.

What does 27 out of 30 mean?

Metric	Value
Correct answers	27
Total questions	30
Percentage	90.00%
Letter grade	A-
GPA points	3.7

The formula behind every score on this site is simple:

Percentage = (Correct ÷ Total) × 100

For 27 out of 30, that’s (27 ÷ 30) × 100 = 90%. Nine out of every ten questions right lands this score right at the entry point of the A range, a genuinely excellent result.

27/30 grade: complete US grading scale

Most US schools grade on a version of this scale. 27 out of 30 falls into the A- row, the first grade in the A tier.

Percentage	Letter grade	GPA points
97-100	A+	4.0
93-96	A	4.0
90-92	A- (90.00%)	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+	1.3
63-66	D	1.0
60-62	D-	0.7
Below 60	F	0.0

Cambridge University tutor William Farish is credited with introducing numerical marks for exams around 1792, decades before American schools settled on the letter-grade system most now use.

How to use the grade calculator

Using the tool above takes three steps.

1. Enter the total number of questions, 30 in this case, into the first field.
2. Enter the number of correct answers, 27 here, into the second field.
3. The calculator shows the percentage, letter grade, and GPA points right away.

A 9th grade teacher in West Virginia grading a 30-question computer science 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

A 9th grade teacher in Wisconsin grades a trigonometry quiz where a student answers 27 out of 30 questions correctly after a near-flawless run through the identity problems.

A high school student in Alabama checks a 30-question music theory test and finds 27 answers marked correct after a confident run through the key-signature section.

A college student in Arizona submits an art history quiz and scores 27 out of 30 after a strong performance on the movement-and-period 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 scholarship or honor-roll criteria require a full A rather than an A-. Check the passing score calculator for specifics.

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 27 out of 30 a good grade?

Yes. 27 out of 30 is 90%, an A- on the standard scale, the start of excellent-grade territory.

What is 27/30 as a percentage?

27 out of 30 equals 90%.

What GPA is 27 out of 30?

27 out of 30 converts to 3.7 grade points on the standard 4.0 GPA scale.

Is 27 out of 30 passing?

Yes. Most US schools set the passing mark at 60%, and 27 out of 30 clears that line by 30 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