Pack Years Calculator
Calculate your smoking history in pack-years, the measure doctors use to decide on lung cancer screening.
Result
Pack-years
20
- Screening (USPSTF)
- Meets the 20 pack-year guideline for yearly lung cancer screening (ages 50 to 80)
- Cigarettes smoked
- 146,000
Common questions
What is a pack-year?
Smoking one pack (20 cigarettes) a day for one year. Half a pack a day for 10 years is 5 pack-years.