**Introduction**

The QB Rating Calculator, also known as the Passer Rating Calculator, is a valuable tool for evaluating the performance of American football quarterbacks. This metric provides a comprehensive assessment of a quarterback’s passing abilities, taking into account various factors such as completion percentage, yards per attempt, touchdown passes, and interceptions. Understanding a quarterback’s passer rating can help coaches, analysts, and fans gauge their effectiveness on the field.

**Formula:**

The QB Rating (Passer Rating) is calculated using the following formula:

**Rating = (a + b + c + d) / 6 * 100**

**a**represents the completion percentage factor.**b**represents the yards per attempt factor.**c**represents the touchdown percentage factor.**d**represents the interception percentage factor.

Each of these factors is calculated as follows:

**a (Completion Percentage Factor):**

- If a quarterback’s completion percentage is between 0 and 30.0, a = (completions / attempts – 0.3) * 5.
- If it’s between 30.1 and 70.0, a = (completions / attempts – 0.3) * 0.25.
- If it’s above 70.0, a = 2.375.

**b (Yards per Attempt Factor):**

- If yards per attempt is below 3.0, b = 0.
- If it’s between 3.0 and 12.5, b = (yards / attempts – 3) * 0.25.
- If it’s above 12.5, b = 2.375.

**c (Touchdown Percentage Factor):**

- If the touchdown percentage is below 0.0, c = 0.
- If it’s between 0.0 and 11.875, c = (touchdowns / attempts) * 20.
- If it’s above 11.875, c = 2.375.

**d (Interception Percentage Factor):**

- If the interception percentage is above 9.5, d = 0.
- If it’s between 9.5 and 1.875, d = (2.375 – (interceptions / attempts) * 25).
- If it’s below 1.875, d = 2.375.

The calculated rating is then multiplied by 100 to provide a whole number rating.

**How to Use?**

Using the QB Rating Calculator is straightforward. You’ll need the following statistics for the quarterback you want to evaluate:

- Completions
- Attempts
- Passing Yards
- Touchdown Passes
- Interceptions

Once you have these numbers, plug them into the formula to calculate the QB Rating.

**Example:**

Let’s say a quarterback has the following statistics for a game:

- Completions: 22
- Attempts: 30
- Passing Yards: 275
- Touchdown Passes: 3
- Interceptions: 1

Using the formula, we can calculate the QB Rating as follows:

So, the QB Rating for this game is approximately 68.95.

**FAQs?**

**What is a good QB Rating?**- A QB Rating of 100 is considered excellent, while a rating below 70 is considered below average. Anything in between varies from average to above average.

**Can I use this calculator for college or high school football stats?**- Yes, the QB Rating Calculator can be used for any level of American football as long as you have the required statistics.

**Is there a maximum QB Rating?**- Technically, there’s no upper limit to the QB Rating, but it’s extremely rare for a quarterback to achieve a perfect rating of 158.3.

**Conclusion:**

The QB Rating Calculator (Passer Rating) is a valuable tool for assessing the performance of quarterbacks in American football. It takes into account multiple factors to provide a numerical rating, helping coaches, analysts, and fans evaluate a quarterback’s effectiveness on the field. Understanding QB Ratings can aid in player development, scouting, and comparing quarterback performance across different games and seasons.