How much garlic powder equals 1.5 cloves?

Generally, 1 clove of garlic is equivalent to about 1/8 teaspoon of garlic powder. Therefore, for 1.5 cloves, you would use approximately 3/16 teaspoon of garlic powder, which can be rounded to about 1/4 teaspoon for simplicity in cooking. Keep in mind that the flavor intensity can vary, so adjust to taste.