How do you count carbs for insulin dosage?

To count carbs for insulin dosage, first determine the total grams of carbohydrates in the meal or snack. Use a carbohydrate-to-insulin ratio, which indicates how many grams of carbs one unit of insulin covers, to calculate the necessary insulin dose. For example, if your ratio is 1:10 and the meal contains 30 grams of carbs, you would take 3 units of insulin. Always consider other factors like current blood sugar levels and physical activity when calculating your dosage.