Pack-Years Calculator

Calculate cumulative smoking exposure in pack-years. Used for lung cancer screening eligibility.

⚠️ For educational purposes only. Always consult a qualified healthcare professional.

Cigarettes per day 20

Years smoked 20 yrs

Pack-Years

Pack-years

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Screening

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Total cigarettes

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⚠️ ≥20 pack-years with age ≥50 may qualify for low-dose CT lung cancer screening.