When substituting almond flour for all-purpose flour, the conversion is not always a direct 1:1 ratio due to the different properties of the two flours. However, as a general guideline, you can use the following conversion:
One cup of all-purpose flour is roughly equivalent to 1/4 to 1/3 cup of almond flour.
Almond flour is denser and contains more fat than all-purpose flour, which can affect the texture and moisture level of baked goods. Therefore, it's important to consider these differences when substituting. It's also worth noting that almond flour does not have gluten, so it may not provide the same structure and elasticity as all-purpose flour.
For more accurate conversions and to ensure the best results in your specific recipe, it's recommended to consult almond flour-specific recipes or those that provide specific measurements for almond flour.