Smoking Pack-Years
Understand cumulative cigarette exposure from the average amount smoked and the time spent smoking.
YOUR DETAILS
A few details. A clearer estimate.
YOUR ESTIMATE
Smoking Pack-Years
Enter your details and confirm the scope to see your estimate.
This describes exposure, not cancer probability, a diagnosis or screening eligibility. A zero result does not establish safety. Do not apply cigarette conversions to bidis, vaping, cigars or smokeless tobacco.
Only on your device. Your entries and results are not saved or sent.
How it works, sources & review details
Assumptions and limitations
Pack-years = (average cigarettes per day ÷ 20) × years smoked. One pack is defined as 20 cigarettes. Displayed to one decimal.
Draft limits: 0–200 cigarettes/day and 0–100 years. These are engineering checks, not clinical thresholds.
This describes exposure, not cancer probability, a diagnosis or screening eligibility. A zero result does not establish safety. Do not apply cigarette conversions to bidis, vaping, cigars or smokeless tobacco.
Sources
Optional next step
You can read about General Medicine or contact the hospital. No result or measurement is shared through these links. Contact does not confirm an appointment.
Review record
JH-009 · Version 0.1.0 · Clinical review: approved
Reviewer: Project owner (approval confirmed in chat) · Review date: 2026-11-07
Educational information only. Not a diagnosis or treatment recommendation.