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Lipid Panel Risk Calculator

Analyze lipid panel results to calculate cholesterol ratios, non-HDL cholesterol, and overall cardiovascular risk category.

About this calculator

A standard lipid panel reports total cholesterol, LDL ("bad" cholesterol), HDL ("good" cholesterol), and triglycerides, but the individual numbers only tell part of the story -- the ratios between them are also widely used as a quick screening signal, because HDL actively removes cholesterol from the bloodstream and so offsets risk from the other values. This calculator computes four such figures from your four lab values: the Total/HDL ratio and LDL/HDL ratio (both commonly cited with an optimal target under roughly 3.5 and 2.5), non-HDL cholesterol (total cholesterol minus HDL, which captures all the atherogenic particle types in one number and is used as a secondary treatment target when triglycerides are elevated), and the triglyceride/HDL ratio (a rough marker some clinicians use as a proxy for insulin resistance). It also tallies a simple point-based Risk Category from how many of your four values fall outside commonly-cited desirable ranges (total cholesterol under 200 mg/dL, LDL under 130 mg/dL, HDL at or above 40 mg/dL, triglycerides under 150 mg/dL).

This is a simplified, point-based screening tool, not a validated 10-year cardiovascular event risk calculator like the Pooled Cohort Equations or Framingham score -- those incorporate age, sex, blood pressure, smoking status, and diabetes status alongside lipids, none of which this calculator collects. Use it to understand what your ratios mean in isolation, and bring the full picture to a clinician for an actual risk assessment and treatment decision.

Inputs

mg/dL
mg/dL
mg/dL
mg/dL

Results

Total/HDL Ratio

3.6 (optimal <3.5)

Risk Category

1 (1=Low, 2=Borderline, 3=High)

LDL/HDL Ratio2.2 (optimal <2.5)
Non-HDL Cholesterol145 mg/dL
TG/HDL Ratio2.5 (ideal <2)
How to Use This Calculator
  1. Enter Total Cholesterol, LDL Cholesterol, HDL Cholesterol, and Triglycerides in mg/dL from a recent lipid panel.
  2. Review the calculated Total/HDL Ratio and LDL/HDL Ratio against their commonly-cited optimal cutoffs (under 3.5 and under 2.5).
  3. Check Non-HDL Cholesterol and the TG/HDL Ratio for additional context beyond the individual values.
  4. Review the Risk Category (1=Low, 2=Borderline, 3=High), a simple point count based on how many values fall outside desirable ranges -- not a validated 10-year cardiovascular risk score.
  5. Bring the full lipid panel to a clinician for an actual cardiovascular risk assessment and treatment discussion, since a real risk estimate also requires age, sex, blood pressure, and smoking status.

How the result changes with Total Cholesterol

Total CholesterolTotal/HDL RatioRisk Category
1001.8 (optimal <3.5)1 (1=Low, 2=Borderline, 3=High)
1502.7 (optimal <3.5)1 (1=Low, 2=Borderline, 3=High)
3005.5 (optimal <3.5)2 (1=Low, 2=Borderline, 3=High)
5009.1 (optimal <3.5)2 (1=Low, 2=Borderline, 3=High)

What each input means

Total Cholesterol
Total cholesterol level from blood test (desirable <200 mg/dL).
LDL Cholesterol
Low-density lipoprotein (bad cholesterol), optimal <100 mg/dL.
HDL Cholesterol
High-density lipoprotein (good cholesterol), desirable >60 mg/dL.
Triglycerides
Triglyceride level from fasting blood test (normal <150 mg/dL).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Cholesterol = 200, LDL Cholesterol = 120, HDL Cholesterol = 55, Triglycerides = 140 = 4 input(s) provided
  2. Calculate Total/HDL Ratio
    Total/HDL Ratio
    3.6 = 3.6
  3. Calculate Risk Category
    Risk Category
    1 = 1
  4. Calculate LDL/HDL Ratio
    LDL/HDL Ratio
    2.2 = 2.2
  5. Calculate Non-HDL Cholesterol
    Non-HDL Cholesterol
    145 = 145

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.

Frequently Asked Questions

What is a good Total/HDL cholesterol ratio?

A Total/HDL ratio under roughly 3.5 is commonly cited as optimal, with higher ratios indicating that HDL's protective effect is smaller relative to your total cholesterol burden. The ratio can look favorable even when total cholesterol is elevated, if HDL is elevated proportionally -- which is why labs report both the raw values and the ratio.

What does non-HDL cholesterol measure that LDL alone doesn't?

Non-HDL cholesterol (total cholesterol minus HDL) captures LDL plus every other cholesterol-carrying particle that isn't protective, including VLDL and remnant lipoproteins that rise when triglycerides are high. It's used as an alternate treatment target specifically because LDL calculated by the standard Friedewald formula becomes less reliable at high triglyceride levels.

Is this the same as a 10-year cardiovascular risk calculator?

No. This tool only scores the four lipid panel values themselves. A real 10-year cardiovascular risk estimate, such as the Pooled Cohort Equations used in US cardiology guidelines, also requires age, sex, systolic blood pressure, smoking status, and diabetes status, and produces a percentage risk rather than a 1-3 point category.

Why might my triglyceride/HDL ratio matter even if my LDL looks fine?

A high triglyceride/HDL ratio is sometimes used as an informal marker of insulin resistance and small, dense LDL particles that standard LDL testing doesn't distinguish from larger, less atherogenic particles -- so it can flag risk that a normal LDL number alone would miss, though it isn't a diagnostic test on its own.

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