Brinkman Index (Smoking Index) Calculator
Calculate your Brinkman Index (smoking index) from cigarettes per day and years smoked. Compare it against the 400, 600, and 1200 thresholds to see a rough smoking-risk category, total cigarettes, and pack-years.
Input
The Brinkman Index (smoking index) is calculated as "cigarettes per day × years smoked." It is a rough indicator of smoking-related risk, not a medical diagnosis.
Result
Brinkman Index (smoking index)
400
Risk level:Increased risk
Risk category
Increased risk
Total cigarettes (est.)
~146,000 cigarettes
Pack-years
20.0 pack-years
The range where the risk of lung cancer and other diseases is considered to begin rising.
Risk guide by Brinkman Index
| Category | Index range |
|---|---|
| Relatively low | Under 400 |
| Increased risk (your range) | 400–600 |
| High risk | 600–1,200 |
| Very high risk | 1,200 and over |
Smoking-related risk is reported to decline over time after quitting. If you are concerned about smoking, consider consulting a smoking-cessation clinic or medical professional. This result is a general estimate, not a diagnosis or medical advice.
How it works
- The Brinkman Index (smoking index) is calculated as "cigarettes per day × years smoked." It captures the cumulative amount of smoking in a single number.
- As a rough guide, a value of 400 or more is generally said to mark where lung-cancer and similar risks begin to rise, 600 or more is high risk, and 1200 or more carries a larger risk of laryngeal cancer and others. These figures are approximate.
- Total cigarettes is estimated as "cigarettes per day × years × 365 days." Because actual consumption varies, treat it as an approximate reference value.
- Pack-years, also shown, is calculated as "cigarettes per day ÷ 20 × years" and represents years of smoking in one-pack-a-day terms—an internationally common indicator.
- Smoking-related risk is reported to decline over time after quitting. If you are concerned about smoking, consider consulting a smoking-cessation clinic or medical professional.
- This tool's result is a rough guide based on a general formula and is not a medical diagnosis or treatment. Always consult a physician or other professional to assess your health.
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Brinkman Index (Smoking Index) Calculator