LDL/HDL Ratio Calculator
Calculate your LDL to HDL cholesterol ratio and review it as a descriptive lipid-balance marker alongside the rest of the lipid panel.
Cholesterol Ratio Calculator
Calculate total cholesterol to HDL ratio and non-HDL cholesterol, then review those results as adjunct lipid markers alongside the rest of the panel.
⚠️ Medical Disclaimer: This calculator is for educational purposes only. It does not replace professional medical advice. Always consult your healthcare provider for cholesterol management.
mg/dL
mg/dL
mg/dL
TC/HDL Ratio
3.82:1
Favorable
TC/HDL Ratio⧉
3.82:1
Favorable
Non-HDL Cholesterol⧉
155 mg/dL
Near Optimal
LDL/HDL Ratio⧉
2.36:1
Optional metric
TC/HDL Ratio Scale
3.82
1:13.5 Optimal4.5 Desirable5.0 Borderline7:1+
Non-HDL Cholesterol
155 mg/dL — Near Optimal
Risk Classification Reference
| TC/HDL Ratio | Risk Level | Non-HDL (mg/dL) | Category |
|---|---|---|---|
| < 3.5:1 | Lower Ratio | < 130 | Optimal |
| 3.5–4.5:1 | Favorable | 130–159 | Near Optimal |
| 4.5–5.0:1 | Borderline High | 160–189 | Borderline High |
| > 5.0:1 | High Ratio Pattern | 190–219 | High |
| ≥ 220 | Very High |
What-If: Raise Your HDL
| HDL (mg/dL) | TC/HDL Ratio | Risk Level |
|---|---|---|
| 45 | 4.67:1 | Borderline High |
| 50 | 4.2:1 | Favorable |
| 55 (current) | 3.82:1 | Favorable |
| 60 | 3.5:1 | Favorable |
| 65 | 3.23:1 | Lower Ratio |
| 70 | 3:1 | Lower Ratio |
| 75 | 2.8:1 | Lower Ratio |
Planning notes, formulas, and examples
About the Cholesterol Ratio Calculator
The Cholesterol Ratio Calculator computes your total cholesterol to HDL ratio (TC/HDL) and non-HDL cholesterol, two useful ways to summarize a standard lipid panel. While the individual lipid values still matter most, these derived numbers can add context when you compare panels over time or review the balance between atherogenic and protective lipoproteins.
TC/HDL is best treated as an adjunct marker rather than a stand-alone risk engine. Non-HDL cholesterol is more directly aligned with modern lipid guidance because it captures all apoB-containing cholesterol other than HDL.
Enter your lipid panel numbers to see the ratio, non-HDL cholesterol, and broad descriptive bands used on this page. The output is meant to support panel interpretation, not to replace guideline-based cardiovascular risk assessment.
When This Page Helps
Individual cholesterol numbers do not tell the full story. Someone with a total cholesterol of 220 and an HDL of 80 has a very different lipid pattern from someone with total cholesterol of 200 and HDL of 35. TC/HDL and non-HDL cholesterol help summarize that context, but they still need to be interpreted with the rest of the lipid panel and the broader ASCVD risk picture.
How to Use the Inputs
- Enter your total cholesterol from your lipid panel (mg/dL).
- Enter your HDL (good) cholesterol.
- Optionally enter your LDL cholesterol for a complete profile.
- View your TC/HDL ratio and risk classification.
- See your non-HDL cholesterol.
- Discuss your results with your healthcare provider.
Formula used
TC/HDL Ratio = Total Cholesterol ÷ HDL Cholesterol
Non-HDL Cholesterol = Total Cholesterol − HDL Cholesterol
Descriptive TC/HDL Bands Used on This Page:
• Lower ratio: < 3.5:1
• Favorable: 3.5–4.5:1
• Borderline high: 4.5–5.0:1
• High ratio pattern: > 5.0:1
Non-HDL Cholesterol Bands on This Page:
• Optimal: < 130 mg/dL
• Near Optimal: 130–159 mg/dL
• Borderline High: 160–189 mg/dL
• High: 190–219 mg/dL
• Very High: ≥ 220 mg/dL
These are broad interpretation bands for panel review, not a substitute for guideline-based treatment decisions.Example Calculation
Result: TC/HDL Ratio = 3.8:1 (Desirable), Non-HDL = 155 mg/dL
TC/HDL = 210 ÷ 55 = 3.82. This falls in the desirable range of 3.5–4.5. Non-HDL = 210 − 55 = 155 mg/dL, which is near optimal on this page. The result is best interpreted as one adjunct marker alongside LDL-C, non-HDL-C, triglycerides, and the broader cardiovascular risk picture.
Tips & Best Practices
- Exercise regularly to raise HDL — aerobic activity is particularly effective.
- Replace saturated fats with unsaturated fats (olive oil, nuts, avocados) to improve your ratio.
- Omega-3 fatty acids from fish or supplements can help raise HDL cholesterol.
- Smoking lowers HDL — quitting can improve your ratio within weeks.
- Moderate alcohol intake may raise HDL, but risks outweigh benefits for non-drinkers.
- Non-HDL cholesterol is considered a better predictor than LDL alone because it includes VLDL.
- Losing 5–10% of body weight can significantly improve cholesterol ratios.
Understanding Cholesterol Ratios
Cholesterol ratios distill the lipid panel into a compact summary number. TC/HDL can help show whether HDL is relatively strong or weak compared with total cholesterol, and it can be useful for tracking changes over time.
Why Non-HDL Often Matters More
Non-HDL cholesterol is total cholesterol minus HDL, so it captures all of the apoB-containing cholesterol outside the protective HDL fraction. Modern lipid guidance gives more direct weight to non-HDL cholesterol, ApoB, triglycerides, and the overall ASCVD risk picture than to any single ratio.
Best Use of the Result
Use TC/HDL and non-HDL as adjunct markers when reviewing the full lipid panel. They are most helpful when they add context to absolute LDL-C, triglycerides, and the overall prevention plan rather than trying to replace them.
Sources & Methodology
Last updated:
Methodology
This page calculates the total-cholesterol-to-HDL ratio by dividing total cholesterol by HDL cholesterol, then calculates non-HDL cholesterol as total cholesterol minus HDL. If LDL is entered, the page also shows the LDL/HDL ratio as an optional context number.
The output is a lipid-panel interpretation aid, not a stand-alone cardiovascular risk engine. Current dyslipidemia guidance gives more direct weight to overall ASCVD risk plus LDL-C, non-HDL-C, triglycerides, ApoB, and lipoprotein(a) than to any single cholesterol ratio. The ratio bands shown on the page are descriptive context for panel review rather than formal treatment targets.
Sources
- 2026 ACC/AHA/AACVPR/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA Guideline on the Management of Dyslipidemia (PubMed / Journal of the American College of Cardiology)
- Total cholesterol/HDL-cholesterol ratio discordance with LDL-cholesterol and non-HDL-cholesterol and incidence of atherosclerotic cardiovascular disease in primary prevention: The ARIC study (PubMed / Atherosclerosis)
Frequently Asked Questions
On this page, ratios below 3.5:1 are treated as more favorable and values above 5:1 as less favorable. The ratio is still only one adjunct marker and should not replace LDL-C, non-HDL-C, ApoB, triglycerides, or overall ASCVD risk assessment.
Non-HDL cholesterol is calculated as total cholesterol minus HDL. It captures all "bad" cholesterol types — LDL, VLDL, IDL, and lipoprotein(a). Many clinicians now use non-HDL alongside LDL because it is more comprehensive.
TC/HDL can add context, especially when it differs from LDL-C or non-HDL-C patterns, but modern lipid management relies more directly on overall ASCVD risk plus markers such as LDL-C, non-HDL-C, ApoB, triglycerides, and lipoprotein(a). No single number tells the whole story.
Focus on both lowering total cholesterol (less saturated fat, more fiber, weight loss) and raising HDL (aerobic exercise, healthy fats, moderate alcohol, quitting smoking). Even modest improvements to HDL have a disproportionate effect on the ratio.
Current AHA/ACC guidance relaxed the fasting requirement for standard lipid panels. Non-fasting total cholesterol and HDL are reliable. However, fasting may still be needed for accurate triglyceride and calculated LDL values.
Adults aged 20+ should get a lipid panel every 4–6 years. Those with risk factors (family history, diabetes, obesity, smoking) should test more frequently — every 1–2 years. If you're on statins, your doctor will check every 3–12 months.
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