How to use: Adjust recipe ingredient quantities for different serving sizes automatically. Enter Original Servings (recipe's default size, e.g., 4), Desired Servings (how many you need, e.g., 8 or 2), and list Ingredients one per line starting with quantity (e.g., "2 cups flour", "1.5 teaspoons salt", "0.5 cup sugar"). Calculator proportionally scales all amounts. Doubling a 4-serving recipe to 8 servings multiplies all ingredients by 2. Halving reduces by 50%. Perfect for meal prep, dinner parties, batch cooking, catering, and holiday gatherings. Maintains proper ingredient ratios for consistent results.