On this page, you can do a simple insulin bolus calculation for people on multiple daily injections, based on carbohydrate ratio (in grams), correction/sensitivity factor (ISF, in mmol/L or mg/dL), target blood glucose (the default is 6 mmol/L or 100 mg/dL), current measured blood glucose (in mmol/L or mg/dL), and carbs to be consumed (in grams). Insulin doses are rounded off to the nearest half-unit. Calculations do not account for active insulin/insulin-on-board, nor for activity!