Home › Health & Fitness › Clinical › Cholesterol Calculator

Cholesterol & Cardiovascular Risk Calculator

Analyze your lipid panel, calculate TC/HDL and LDL/HDL ratios, and get your 10-year ASCVD risk using the ACC/AHA Pooled Cohort Equations.

Quick Load:
Lipid Panel Values
Set to 0 to auto-calculate via Friedewald equation
Clinical Risk Factors
Blood Pressure (for PCE)
For informational purposes only. Consult a healthcare provider for clinical interpretation and treatment decisions.
Total / HDL Ratio — Category
3.8 — Desirable
Optimal: below 3.5  |  High Risk: above 5.0
Ratio Position on Risk Scale (0 – 10)
0 3.5 4.0 5.0 10
Optimal Desirable Borderline High Risk
TC/HDL = Total ÷ HDL LDL/HDL = LDL ÷ HDL Non-HDL = Total − HDL VLDL = Trig ÷ 5
Total/HDL Ratio
3.8
LDL/HDL Ratio
2.4
Non-HDL Chol
155 mg/dL
VLDL (est.)
30 mg/dL
Triglycerides
150 mg/dL
HDL (Good)
55 mg/dL
LDL (Bad)
130 mg/dL
LDL vs Target Gap
+30 mg/dL

Your Lipid Values vs Optimal Thresholds (mg/dL)

Use the sliders below to model how diet, exercise, and medication could improve your lipid panel and reduce cardiovascular risk. Values update in real time.

Scenario:
What-If Adjustments
LDL Reduction (diet + exercise) 0%
Diet changes alone can reduce LDL 10–25%
HDL Boost (aerobic exercise) 0%
Regular aerobic exercise raises HDL 5–10%
Triglyceride Reduction (diet) 0%
Reducing carbs + alcohol can cut triglycerides 20–50%
Statin Therapy (LDL reduction)
Based on published clinical averages. Individual response varies. Consult your physician before starting or stopping medication.
Projected Impact
Current Ratio
—
→
Projected Ratio
—
Projected LDL
—
Projected HDL
—
Proj. Total Chol
—
Proj. 10-yr Risk
—
Bear — No Change
—
TC/HDL Ratio
Base — Lifestyle Changes
—
TC/HDL Ratio
Bull — Lifestyle + Statin
—
TC/HDL Ratio
TC/HDL Ratio Sensitivity Matrix

Shows how your Total/HDL ratio changes across a range of cholesterol values. Amber border = closest to your current values. Click any cell to load those values.

Current vs Projected Lipid Values (mg/dL)

ACC/AHA 10-Year ASCVD Risk
—% 10-YEAR ASCVD RISK Low Intermediate High
—
Calculate your lipid panel first
ACC/AHA 2019 LDL Treatment Target
—
Based on your 10-year ASCVD risk tier
Your LDL: —
About the PCE

The Pooled Cohort Equations (Goff et al., 2014) are the ACC/AHA–recommended tool for estimating 10-year atherosclerotic cardiovascular disease (ASCVD) risk. This calculator implements race- and sex-specific equations for White and African American adults.

For clinical decisions, use the official ACC ASCVD Risk Estimator Plus. This tool is for educational purposes only.

Risk Factor Summary
Risk Factor Your Value Optimal Target Status Est. Impact
Personalized Action Plan

Ranked by estimated cardiovascular risk reduction. Steps are based on current ACC/AHA guidelines.

    How to Use This Calculator

    1

    Enter Lipid Panel

    Input your total cholesterol, HDL, LDL, and triglycerides from your blood test results. Leave LDL at 0 to auto-calculate via the Friedewald equation.

    2

    Review Your Ratios

    See your TC/HDL ratio on the visual gauge, your 8-stat breakdown, and the bar chart comparing your values to optimal thresholds.

    3

    Optimize & Plan

    Use the Lifestyle Optimizer to model improvements, then check your ASCVD Risk & Plan tab for your 10-year risk score and personalized action steps.

    Formula & Methodology

    Friedewald LDL Estimate

    LDL = Total Cholesterol − HDL − (Triglycerides / 5)

    Used when triglycerides are below 400 mg/dL. Direct LDL measurement is more accurate at high triglyceride levels (Trig > 400 mg/dL).

    TC/HDL Ratio

    Ratio = Total Cholesterol ÷ HDL

    A key cardiovascular risk indicator. Ideal is below 3.5; above 5.0 indicates approximately double average CVD risk.

    ACC/AHA Pooled Cohort Equations (PCE)

    10-yr ASCVD Risk = 1 − S₀^exp(Σβᵢ − mean)

    Race- and sex-specific regression equations using age, total cholesterol, HDL, systolic BP, BP treatment, smoking, and diabetes. Published by Goff et al. (2014) in Circulation.

    About this calculation · Accuracy & Methodology

    Key Terms

    LDL
    Low-Density Lipoprotein — 'bad' cholesterol that builds up in artery walls, forming atherosclerotic plaque.
    HDL
    High-Density Lipoprotein — 'good' cholesterol that removes LDL from arteries and transports it to the liver for excretion.
    VLDL
    Very Low-Density Lipoprotein — estimated as Triglycerides ÷ 5 (Friedewald). Carries triglycerides and contributes to plaque.
    Triglycerides
    A type of fat in the blood. High levels (above 150 mg/dL) increase heart disease risk, especially in combination with low HDL.
    Non-HDL Cholesterol
    Total cholesterol minus HDL. Captures all atherogenic (plaque-forming) particles and is a stronger risk predictor than LDL alone.
    ASCVD Risk
    10-year risk of atherosclerotic cardiovascular disease events (heart attack, stroke) calculated using the Pooled Cohort Equations.

    Real-World Examples

    Example 1

    Healthy 42-year-old

    TC: 185, HDL: 65, LDL: 105, Trig: 110 | Non-smoker, no diabetes, BP: 115

    TC/HDL = 2.85 (Optimal). 10-yr ASCVD risk ≈ 3.2%. LDL target: <130 mg/dL. Low risk — maintain current lifestyle.

    Example 2

    High-Risk 60-year-old

    TC: 255, HDL: 36, LDL: 168, Trig: 240 | Smoker, diabetic, BP: 148 (treated)

    TC/HDL = 7.1 (High Risk). 10-yr ASCVD risk ≈ 38%. LDL target: <70 mg/dL. High-intensity statin strongly recommended.

    Cholesterol Level Guidelines (mg/dL)

    MarkerOptimalBorderlineHigh Risk
    Total Cholesterol<200200–239≥240
    LDL Cholesterol<100130–159≥160
    HDL (Men)≥6040–59<40
    HDL (Women)≥6050–59<50
    Triglycerides<150150–199≥200
    Non-HDL<130130–159≥160
    TC/HDL Ratio<3.53.5–5.0>5.0

    Understanding Your Cholesterol Numbers

    Why Ratios Matter More Than Totals

    A total cholesterol of 220 with HDL of 80 (ratio 2.75) is far healthier than total 190 with HDL of 35 (ratio 5.4). The TC/HDL ratio and non-HDL cholesterol are stronger predictors of cardiovascular risk than any single number. The ACC/AHA Pooled Cohort Equations go further, incorporating blood pressure, smoking, and diabetes to estimate your personalized 10-year risk.

    Raising HDL Naturally

    Regular aerobic exercise is the most effective HDL booster, raising it 5–10%. Moderate alcohol consumption, omega-3 fatty acids, and quitting smoking also help. HDL above 60 mg/dL is considered a "negative risk factor" that actively reduces overall cardiovascular risk. HDL above 80 mg/dL may signal certain genetic conditions and should be discussed with a physician.

    When Medication Is Needed

    Statins are recommended when LDL exceeds 190, or when 10-year ASCVD risk exceeds 7.5% with LDL above 70. Lifestyle changes alone can lower LDL 10–25%, but many patients need medication to reach guideline-recommended targets. Ezetimibe and PCSK9 inhibitors offer additional LDL reduction for high-risk patients who cannot reach targets on statins alone.

    Frequently Asked Questions

    Should I fast before a cholesterol test? +
    Traditionally yes — a 9–12 hour fast was required. Current guidelines allow non-fasting panels for screening, as non-fasting LDL differs minimally from fasting LDL. However, triglycerides require fasting for accuracy as they rise 20–30% after eating.
    What is familial hypercholesterolemia? +
    FH is a genetic disorder causing severely elevated LDL (often >190 mg/dL) from birth due to defective LDL receptors. It affects 1 in 250 people and dramatically increases early heart attack risk. If you have LDL >190 with a family history of early heart disease, ask your doctor about genetic testing.
    Can I lower LDL with diet alone? +
    For most people, dietary changes reduce LDL 15–25%. Effective strategies include reducing saturated fat, increasing soluble fiber, adding plant sterols/stanols (2g/day reduces LDL ~10%), and replacing refined carbs with unsaturated fats. Patients with severe elevations usually also need medication.
    What is the ACC/AHA Pooled Cohort Equation? +
    Published by Goff et al. in 2014, the PCE is the standard clinical tool for estimating 10-year atherosclerotic cardiovascular disease risk. It uses age, sex, race, total cholesterol, HDL, systolic BP, BP treatment, smoking, and diabetes. It was derived from large US cohort studies and is validated for White and African American adults aged 40–79.
    Does dietary cholesterol raise blood cholesterol? +
    Less than previously thought. The 2015 Dietary Guidelines removed the daily cholesterol limit. For most people, saturated fat has a far greater impact on blood LDL than dietary cholesterol. However, a small percentage of "hyper-responders" are sensitive to dietary cholesterol and may benefit from limiting egg yolks and shellfish.