Grading Scale

10-point grade chart: percent, letter and 4.0

On a 10-point scale, an A starts at 90 and each letter down to D starts 10 points lower. It is one example, not a national rule. The US has no national grading standard, and a 2005 federal overview says there is no national school system.

This table comes from Florida's statute for public school grades 6 to 12, not colleges. We write its 80-89 as 80 to under 90, so every percent has a row.

College Board's BigFuture calls a similar table one commonly used system, but its D row is 66 to 69.

Grade percentage chart: percentage to letter grade

Find the row your percent falls in, then read the letter. This plus/minus table comes from the Johns Hopkins School of Nursing catalog for 2026-27. It is one school's rule, and the only full 13-row table we read.

Letter grades on the 4.0 GPA scale

Read across from a letter grade to its GPA points.

For percentage to GPA, take two steps: find the letter, then its grade points. Made-up example: a 91 is an A and 4.0 on the 10-point scale, but an A- and 3.70 on the Plus/minus scale.

Other schools differ. An A- is 3.67 at Illinois, and an A+ is 4.33 at Iowa. The GPA Calculator has four GPA scales.

Grade points on the 4.0, 4.3 and 4.33 scales

These are the four GPA scales in the GPA Calculator, side by side. Each column matches a published list, linked under the table.

• 4.0 scale (A- = 3.7): Missouri and UC Berkeley
• 4.0 scale (A- = 3.67): Illinois and Drexel
• 4.3 scale (A+ = 4.3): Cornell and Stanford
• 4.33 scale (A+ = 4.33): Iowa and Arizona State

A, B, C, D and F are worth the same on all four. The plus and minus grades differ: an A- is 3.7 on two scales and 3.67 on the other two, and an A+ is 4.0, 4.3 or 4.33.

What real schools do: why scales differ

Schools pick their own rows and cutoffs. The University of the Incarnate Word has no A+ and no C-, so its C starts at 70, not 73. Purdue Global's undergraduate table has no A+ and no D-, so its D starts at 60, not 63.

Three made-up scores show the effect:

How to make your own grading scale

1. Pick the closest scale under Grading scale, press Make my own scale, and type a Scale name.
2. Change the Label, Minimum % and Grade point on each row. Add row adds a row, and × removes one.
3. Keep minimums from highest to lowest, and set the last one to 0. Sort highest to lowest fixes the order.
4. Press Save scale.

Made-up example: your school sets A at 92, B at 84, C at 75, D at 70 and F at 0. Under Check a percent, 83 now shows a C, though it is a B on both built-in scales.

Your scale stays in this browser, and Copy link shares it. It joins the scale list in the Grade Calculator, Weighted Grade Calculator, Final Grade Calculator, Semester Grade Calculator and Test Grade Calculator. The GPA Calculator keeps its own four scales, and the Weighted GPA Calculator keeps its own grade scales.

Print a grading scale chart for your classroom

Pick a scale and press Print poster. It opens on its own page with a Print button, sized for one sheet. Save your own scale first, because unsaved changes do not print. For the national scales of other countries, see the printable grading scale charts.

Why this may not match your gradebook

Your gradebook shows a lower grade

Your school's cutoffs may be higher. A 92 is an A on the 10-point scale but an A- on the Plus/minus scale.

Your gradebook shows a higher grade

Your school may draw the line lower. A 71 is a C- on the Plus/minus scale but a C at Incarnate Word.

You are off by less than a point

Check rounding. Johns Hopkins nursing rounds final course grades to a whole number, so 89.5 becomes 90, an A-. The minimums alone give a B+.

Grading scale FAQ

What letter grade is an 85?

A B on both built-in scales, and at Incarnate Word and Purdue Global.

What percent is a 4.0 GPA?

On both built-in scales, a 4.0 takes an A in every class. That means 90 and up on the 10-point scale, or 93 and up on the Plus/minus scale. A weighted GPA or an A+ worth more than 4.0 changes this.

How do I convert a GPA to a percentage?

On these scales there is no exact conversion, because each letter covers a range. A 3.0 in one class is a B, which is 80 to under 90 on the 10-point scale and 83 to under 87 on the Plus/minus scale.

What is a passing grade?

It depends on the school. Florida's statute defines D as the lowest acceptable progress and F as failure. Stanford calls a D a minimal pass. Johns Hopkins nursing programs require a repeat below a C- or higher, depending on the program.

Related tools and guides

• Test Grade Calculator: Turn questions wrong into a score, with a chart you can print.
• GPA Calculator: Calculate your term and cumulative college GPA.
• How to Curve Grades Fairly: Methods Compared
• Rubric Grading: Why 2 out of 4 Need Not Mean 50%
• Standards-Based Report Cards: What a 1 to 4 Means

Sources

• Education in the United States: A Brief Overview (U.S. Department of Education, September 2005)
• Chapter 1003 Section 437 - 2026 Florida Statutes - The Florida Senate
• How to Calculate Your GPA on a 4.0 Scale – BigFuture
• Grading Policy | Johns Hopkins University Academic Catalogue
• Academic Standards for Progression | Johns Hopkins University Academic Catalogue
• Grading Scale | Registrar | University of the Incarnate Word
• Academic Grades and Marks
• General University Grading System
• Explanation of Grades | Office of the Registrar | Illinois
• Grading | University of Iowa General Catalog
• Grading System
• Grades & Grading - Office of the Registrar
• Grading Scale
• Academic Grades and Notations | The ILR School
• How Do I Calculate My Grade Point Average (GPA)?
• Grades and grading policies | University Registrar Services | ASU

Every rule these tools use, and how each number is worked out, is on How we calculate.

Cite this page

GradeCat. (2026, November 4). Grading Scale. https://gradecat.com/grading-scale/

Last updated 2026-11-04. Results are estimates, not official grades. Your school may use different rules. Found a wrong result? Report it.