Explore letter-grade policies and equal-credit grade mixes →
Read the mapping, not just “4.0 scale”
Two four-point scales can differ. A minus might be worth 3.7 in one example and 3.67 in another. Some policies treat A+ like A, while others assign it additional points. Use the complete grade table rather than the scale’s name.
Credits and eligibility are part of the scale
A grade-point table alone does not tell you whether a pass, withdrawal, transfer, or repeat belongs in the calculation. First decide which record you are measuring, then use the corresponding points and GPA credits.
Percentage bands are a separate rule
The boundary between an A and a B comes from a grading policy or syllabus. Dividing a percentage by 25 assumes a linear relationship that a letter-grade scale does not necessarily have. Use a documented course-by-course mapping.
Example letter-grade to GPA table
This is the plus/minus scale used by GPAcity’s generic calculator. A+ and A both equal 4.0 here; other schools may assign A+ more points or use 3.67 instead of 3.7 for A−. An aggregate GPA is not proof of any particular course’s letter grade.
| Course grade | Grade points | Understand this GPA |
|---|---|---|
| A+ | 4.00 | 4.0 GPA → |
| A | 4.00 | 4.0 GPA → |
| A- | 3.70 | 3.7 GPA → |
| B+ | 3.30 | 3.3 GPA → |
| B | 3.00 | 3.0 GPA → |
| B- | 2.70 | 2.7 GPA → |
| C+ | 2.30 | 2.3 GPA → |
| C | 2.00 | 2.0 GPA → |
| C- | 1.70 | 1.7 GPA → |
| D+ | 1.30 | 1.3 GPA → |
| D | 1.00 | 1.0 GPA → |
| D- | 0.70 | 0.7 GPA → |
| F | 0.00 | 0.0 GPA → |
On this example policy, P and W are excluded from GPA credits; F contributes zero points but its GPA credits still count. Check your institution’s actual rules before applying either treatment.
ILLUSTRATIVE EXAMPLE
Put the numbers together
With equal credits, A/4.0 and B/3.0 yield 3.50. That is the average of the mapped grade values; it does not establish what percentage each student earned.
Method and limits
These examples use stated mathematical assumptions, not a claim that every institution uses the same policy. Read our methodology or check the available institution-specific profiles. Your transcript is the official record.