A diabetic blood sugar chart can be printed out from WebMD. The chart is a guideline for target blood sugar levels for diabetic adults 20 years of age and older.
Fasting levels should be under 100, explains WebMD. Before meals, the numbers should typically range between 70 and 130. One to two hours after a meal, readings should be 180 or less. Before exercise, for adults using insulin, the levels should be a minimum of 100. At bedtime the readings should be between 100 and 140. Optimum A1c levels should be 7 percent or less.
These numbers are the target goals, according to WebMD. Maintaining proper blood sugar levels helps prevent diabetic complications such as strokes, problems with vision, heart disease, nerve damage and loss of kidney function.