Cholesterol Ratio Calculator

Lipid panels list several numbers, but the relationships between them often say more about heart health than any single value. This tool works out three of the most telling ratios: Total Cholesterol to HDL (TC/HDL), LDL to HDL (LDL/HDL), and Triglycerides to HDL (Trig/HDL). Cardiologists have leaned on these comparisons because they capture the balance between cholesterol that tends to harm arteries and the HDL that helps clear it, a view still emphasized in 2026 practice. Seeing the ratios laid out gives you a concrete basis for lifestyle decisions and for talking through your cardiovascular risk with a provider.

Each ratio comes from simple division. TC/HDL divides your total cholesterol by your HDL, LDL/HDL divides your LDL by your HDL, and Trig/HDL divides your triglycerides by your HDL. The resulting figures are then read against established clinical thresholds used to sort people into risk categories, drawing on the 2026 recommendations from the American Heart Association and American College of Cardiology.

For the numbers to mean anything, pull them from your most recent lipid panel taken after fasting. Non-fasting triglycerides in particular can run noticeably high and skew the Trig/HDL ratio, so they are worth avoiding here. These ratios are also only one slice of a much larger picture; your doctor can weigh them alongside your full medical history and other risk factors before drawing conclusions. The output here is meant to inform, not to replace that conversation.