Interpret your cholesterol panel and ratio
Updated October 2026
A cholesterol ratio calculator divides your total cholesterol by your HDL cholesterol to produce a ratio that is a strong predictor of heart disease risk. A ratio below 4.0 is generally considered favorable, and lower ratios indicate better cardiovascular health.
Your cholesterol numbers are more meaningful as ratios than as isolated values. The Total Cholesterol/HDL ratio is considered one of the best predictors of cardiovascular risk — often more informative than total cholesterol alone. A total cholesterol of 240 with an HDL of 80 (ratio 3.0) carries lower risk than a total cholesterol of 200 with an HDL of 40 (ratio 5.0).
Total/HDL ratio: Total cholesterol divided by HDL. Ideal: below 3.5. Average risk: 4.0–5.0. High risk: above 5.0. The AHA considers this ratio a better risk predictor than total cholesterol alone. LDL/HDL ratio: LDL divided by HDL. Ideal: below 2.5. Elevated risk: above 3.5. Triglyceride/HDL ratio: A marker of insulin resistance. Ideal: below 2.0. Concerning: above 3.5. This ratio correlates with small, dense LDL particles (the most dangerous type) and is increasingly used as a metabolic health indicator.
Total cholesterol: Below 200 mg/dL is desirable. 200–239 is borderline high. 240+ is high. LDL ("bad" cholesterol): Below 100 is optimal. 100–129 is near optimal. 130–159 is borderline high. 160+ is high. HDL ("good" cholesterol): 60+ is protective. 40–59 is acceptable. Below 40 (men) or 50 (women) is a risk factor. Triglycerides: Below 150 is normal. 150–199 is borderline. 200+ is high.
HDL particles perform reverse cholesterol transport — they scavenge excess cholesterol from arteries and carry it back to the liver for disposal. High HDL is actively protective, not just "not bad." This is why the Total/HDL ratio is so powerful: it captures both the total cholesterol burden AND the body's ability to clear it. Raising HDL by even 1 mg/dL reduces heart disease risk by 2–3%.
Raise HDL: Regular aerobic exercise (strongest effect — raises HDL 5–10%), moderate alcohol consumption (1 drink/day), omega-3 fatty acids (fish, walnuts, flax), and quitting smoking (raises HDL 5–10% within weeks). Lower LDL: Reduce saturated fat, eliminate trans fats, eat more soluble fiber (oats, beans, apples), lose excess weight, and consider statin therapy if lifestyle changes aren't sufficient. Lower triglycerides: Reduce refined carbs and sugar, limit alcohol, increase omega-3s, exercise regularly, and lose excess weight.
The AHA recommends cholesterol screening every 4–6 years for adults over 20 with no risk factors. More frequently (every 1–2 years) if you have risk factors: family history, diabetes, hypertension, smoking, obesity, or previous abnormal results. A fasting lipid panel (9–12 hour fast) provides the most accurate triglyceride and LDL values, though non-fasting tests are increasingly accepted for total cholesterol and HDL.
| Ratio Type | Low Risk | Moderate Risk | High Risk |
|---|---|---|---|
| Total/HDL Ratio | <3.5 | 3.5–5.0 | >5.0 |
| LDL/HDL Ratio | <2.5 | 2.5–3.5 | >3.5 |
| Triglyceride/HDL Ratio | <2.0 | 2.0–4.0 | >4.0 |
For decades, total cholesterol was the primary metric physicians used to assess cardiovascular risk. Modern lipidology recognizes that cholesterol ratios and particle-level analysis provide far more predictive information than any single number. Two patients with identical total cholesterol of 220 mg/dL can have dramatically different risk profiles depending on how that total distributes across HDL, LDL, triglycerides, and lipoprotein subfractions.
Total cholesterol-to-HDL ratio: Perhaps the most widely used ratio. Calculated by dividing total cholesterol by HDL. An ideal ratio is below 3.5:1; average risk is 5:1; high risk begins above 6:1. This ratio captures the protective effect of HDL — a person with total cholesterol of 250 and HDL of 80 (ratio 3.1) is at lower risk than someone with total cholesterol of 200 and HDL of 35 (ratio 5.7). LDL-to-HDL ratio: More specific to the two most important lipoproteins. Ideal is below 2.5:1. This ratio effectively measures the balance between cholesterol being deposited in arterial walls (LDL) and cholesterol being transported back to the liver for removal (HDL). Triglyceride-to-HDL ratio: An emerging proxy for insulin resistance and metabolic health. A ratio below 2:1 correlates with large, buoyant LDL particles (less atherogenic), while a ratio above 4:1 suggests predominance of small, dense LDL particles (more atherogenic). This ratio is particularly useful because it can be calculated from a standard lipid panel without advanced testing.
Standard lipid panels report total cholesterol, LDL, HDL, and triglycerides. However, LDL particle number (LDL-P) is a stronger predictor of cardiovascular events than LDL cholesterol concentration (LDL-C). Two people with LDL-C of 130 mg/dL can have vastly different LDL particle counts — one might carry 1,000 particles (low risk), another 1,800 (high risk). Advanced lipid testing through NMR spectroscopy (the NMR LipoProfile) or ion mobility measures particle number and size distribution. These tests are increasingly covered by insurance and cost $50–$100 out of pocket when not covered.
To raise HDL: Regular aerobic exercise (30+ minutes, 5 days/week) raises HDL by 5–15%. Moderate alcohol consumption (1 drink/day for women, 1–2 for men) raises HDL by 5–10% but carries other risks. Replacing refined carbohydrates with monounsaturated fats (olive oil, avocados, nuts) improves HDL. Smoking cessation raises HDL by an average of 4 mg/dL. To lower LDL: Reduce saturated fat intake to under 7% of calories, increase soluble fiber to 10–25 g/day (oats, barley, beans, psyllium), and add plant sterols/stanols (2 g/day, available in fortified foods). These dietary changes can lower LDL by 15–30%. To lower triglycerides: Reduce sugar and refined carbohydrate intake (the biggest dietary driver of elevated triglycerides), limit alcohol (even moderate drinking raises triglycerides significantly in sensitive individuals), increase omega-3 intake (fatty fish 2–3 times/week or 2–4 g EPA+DHA supplement), and lose excess weight (each 5–10 lbs lost reduces triglycerides by 10–20%).
Lifestyle modifications should be the first approach for most patients with suboptimal ratios. However, statin therapy becomes appropriate when 10-year cardiovascular risk exceeds 7.5–10% (calculated using the ASCVD Risk Calculator), when LDL exceeds 190 mg/dL regardless of other factors, or when diabetes is present with LDL above 70–100 mg/dL. Statins reduce LDL by 30–50% and cardiovascular events by 25–35%. For patients unable to tolerate statins, alternatives include ezetimibe (blocks cholesterol absorption, reduces LDL by 15–20%), PCSK9 inhibitors (injectable biologics that reduce LDL by 50–60%), and bempedoic acid (reduces LDL by 15–25%).
Track your ratios over time rather than obsessing over a single test result. Lipid levels fluctuate naturally by 5–10% between tests based on hydration, recent meals, illness, and seasonal variation. A consistent pattern across two or three fasting lipid panels spaced 4–8 weeks apart provides a reliable baseline for clinical decisions and allows you to measure the real impact of lifestyle interventions.
See also: Blood Pressure · BMI Calculator · A1C Calculator · Diabetes Risk · Calorie Calculator
→ Total/HDL ratio below 3.5 is ideal. Below 3.5 = low risk. 3.5–5.0 = average risk. Above 5.0 = elevated risk. This ratio is more predictive of heart disease than total cholesterol alone because it accounts for the protective effect of HDL.
→ Triglyceride/HDL ratio is a metabolic health proxy. A ratio below 2.0 suggests healthy insulin sensitivity and low cardiovascular risk. Above 3.0 is associated with insulin resistance and metabolic syndrome — even if other numbers look normal. This is one of the most underused screening metrics.
→ Non-HDL cholesterol is gaining importance. Non-HDL = Total cholesterol minus HDL. It captures all atherogenic particles (LDL + VLDL + IDL + Lp(a)) in one number. Some cardiologists consider it more useful than LDL alone for assessing risk.
→ Ratios improve with exercise more than diet alone. Aerobic exercise raises HDL (improving all ratios) while diet primarily lowers LDL and triglycerides. The combination is most powerful. Track fitness progress with our Heart Rate Zone Calculator. See also our Cholesterol Calculator for absolute values.
See also: Cholesterol Calculator · Blood Pressure Checker · Diabetes Risk Calculator · BMI Calculator