Your cholesterol ratio (total cholesterol divided by HDL) is one of the clearest single signals of heart risk. Enter two numbers to see yours.
Your cholesterol ratio is your total cholesterol divided by your HDL ("good") cholesterol. A lower ratio is better. A ratio under 3.5 is considered optimal, 3.5 to 5.0 is moderate, and above 5.0 signals higher cardiovascular risk. Because it weighs your protective HDL against your total, it often reflects risk better than total cholesterol alone.
| Ratio | Category |
|---|---|
| Below 3.5 | Optimal |
| 3.5 to 5.0 | Moderate |
| Above 5.0 | High |
Ranges based on American Heart Association guidance (a ratio below 3.5 is often cited as optimal). Educational reference, not a diagnosis.
A good ratio is reassuring, but it can also hide a high LDL or triglycerides. BloodMarker reads your entire blood test at once, shows how your markers interact, and tracks them over time so you can watch them improve.
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A total-to-HDL cholesterol ratio below 3.5 is generally considered optimal. Between 3.5 and 5.0 is moderate, and above 5.0 is high and associated with greater heart risk.
You can improve the ratio by raising HDL (regular exercise, healthy unsaturated fats, quitting smoking) and lowering total cholesterol and triglycerides through diet and, if your doctor advises, medication.
The ratio adds useful context because it accounts for your protective HDL. But no single number tells the whole story. Your LDL, non-HDL, and triglycerides matter too, which is why looking at the full panel together is more reliable.
This calculator is for education only and is not medical advice or a diagnosis. Always discuss your results and any changes with a qualified healthcare professional. Provided by the BloodMarker Team · contact@bloodmarker.com