Cholesterol Ratio Calculator (Embed)

Sex

Total cholesterol *

mg/dL

HDL ("good") *

mg/dL

LDL ("bad") (optional — backfilled via Friedewald)

mg/dL

Triglycerides (needed for TG/HDL + AIP)

mg/dL

Worst-marker tier

Optimal

TC/HDL

—

LDL/HDL

—

TG/HDL

—

Non-HDL

— mg/dL

—

AIP

—

Enter your lab values to see your cholesterol ratios.

Bands aligned with the 2018 AHA/ACC Guideline on the Management of Blood Cholesterol and the Castelli risk indices.

Educational reference only. Cholesterol ratios provide a snapshot of cardiovascular risk but cannot replace a full clinical evaluation. The 2018 AHA/ACC guideline cautions that LDL-C and non-HDL-C values, in the context of your overall ASCVD risk, guide treatment decisions — not ratios in isolation. The Friedewald LDL estimate is unreliable when triglycerides exceed 400 mg/dL; ask for a direct LDL-C measurement instead. Discuss treatment options with your clinician.