How to Convert Unweighted to Weighted GPA Scale

Converting an unweighted Grade Point Average (on a 4.0 max scale) to a weighted scale (typically 5.0) rewards students for taking challenging course loads such as Advanced Placement (AP), International Baccalaureate (IB), and Honors classes.

Because an unweighted GPA treats an $A$ in standard physical education the same as an $A$ in AP Calculus, high schools use weighted scales to reflect academic rigor. This guide explains how to convert unweighted grades into a weighted GPA using our GPA Calculator.

Standard Course Weighting Scale

On a weighted scale, extra points (called "weights") are added to letter grades earned in advanced classes:

Step-by-Step Weighted GPA Calculation

To convert your transcript to a weighted GPA:

1. Assign weighted point values to each grade based on course difficulty level.
2. Multiply each course's point value by its credit hours to calculate total quality points.
3. Sum total quality points and divide by total attempted credits.

$$\text{Weighted GPA} = \frac{\sum (\text{Course Grade Points} + \text{Weight}) \times \text{Credits}}{\text{Total Attempted Credits}}$$

Worked Example:

A student takes 4 courses (3 credits each):

• AP English: Grade A (5.0 weighted points x 3 credits = 15.0)
• Honors Chemistry: Grade B (3.5 weighted points x 3 credits = 10.5)
• Standard History: Grade A (4.0 unweighted points x 3 credits = 12.0)
• AP Calculus: Grade B (4.0 weighted points x 3 credits = 12.0)

$$\text{Total Quality Points} = 15.0 + 10.5 + 12.0 + 12.0 = 49.5$$ $$\text{Total Credits} = 12$$ $$\text{Weighted GPA} = \frac{49.5}{12} = \mathbf{4.125}$$

Automate Your GPA Conversions

Calculate both your unweighted and weighted GPA instantly across 4.0, 4.33, and 5.0 scales using our free GPA Calculator. Explore more academic tools in our Math Category.

For a complete comparison between scales, read Cumulative GPA vs Weighted GPA Differences.