What is the normal range for cholesterol levels?

In general: A total cholesterol level of less than 200 mg/dL (5.17 mmol/L) is normal. A total cholesterol level of 200 to 239 mg/dL (5.17 to 6.18 mmol/L) is borderline high. A total cholesterol level of 240 mg/dL (6.21 mmol/L) or greater is high.