You can also look into basal-bolus regime. Under this approach you work out a carb-insulin ratio and you dose then based on how many carbs you eat. You can also work out correction ratios. Ie. how much 1 unit insulin will drop your blood sugar. This will be much more accurate in terms of managing blood sugars than sliding scale which is more about correction after the fact.
Okay, I just answered your other question. Take it you are type 1 diabetic? Here is a pdf chart of the sliding scale. https://apps.umchealthsystem.com/forphysicians/medicalorders/Ref%20-%20Adult%20Sliding%20Scale%20for%20Insulin%20Aspart.pdf