Cholesterol Ratio Risk Calculator
Total/HDL and LDL/HDL ratios with risk bands.
Enter your values
Enter the total cholesterol in mg/dL.
Enter the hdl in mg/dL.
Enter the ldl in mg/dL.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Total / HDL ratio
- 3.64
- Risk band
- Average
- LDL / HDL ratio
- 2.18
- Non-HDL cholesterol
- 145 mg/dL
Quick answer
Total-to-HDL ratio is a stronger predictor than total cholesterol alone; below 3.5 is ideal.
ratio = total cholesterol / HDL
At a glance
| What it does | Total/HDL and LDL/HDL ratios with risk bands. |
|---|---|
| Category | Health |
| Inputs needed | Total cholesterol, HDL, LDL |
| Main output | Total / HDL ratio |
| Formula | ratio = total cholesterol / HDL |
| Cost | Free — no sign-up, no download |
How to use the Cholesterol Ratio Risk Calculator
- 1Take the values from a recent fasting lipid panel.
- 2Enter total, HDL and LDL in mg/dL.
- 3Discuss any elevated ratio with your doctor rather than self-treating.
Inputs explained
- Total cholesterol(mg/dL)
- Enter the total cholesterol in mg/dL.
- HDL(mg/dL)
- Enter the hdl in mg/dL.
- LDL(mg/dL)
- Enter the ldl in mg/dL.
Worked example
Using the values the calculator loads with:
Inputs
- Total cholesterol200 mg/dL
- HDL55 mg/dL
- LDL120 mg/dL
Results
- Total / HDL ratio3.64
- Risk bandAverage
- LDL / HDL ratio2.18
- Non-HDL cholesterol145 mg/dL
Frequently asked questions
Convert from mmol/L?
Multiply mmol/L by 38.67 for cholesterol values.
How do I improve the ratio?
Raising HDL through exercise often moves the ratio faster than lowering total cholesterol alone.
What do I need to enter into the Cholesterol Ratio Risk Calculator?
Just 3 values: total cholesterol, hdl, ldl. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Cholesterol Ratio Risk Calculator work out the answer?
Total-to-HDL ratio is a stronger predictor than total cholesterol alone; below 3.5 is ideal. It applies the formula ratio = total cholesterol / HDL and shows the working so you can check each step by hand.
Is the Cholesterol Ratio Risk Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.