How many cups of flour in 11.25 ounces?

To convert ounces of flour to cups, you can use the following formula:

```

Cups of flour = Ounces of flour / 4.5

```

In this case, we have 11.25 ounces of flour, so:

```

Cups of flour = 11.25 / 4.5

= 2.522

```

Since you can't have a partial cup of flour, you would need to round up to 1.5 cups of flour.