Pack-Years Calculator - Free, Instant, In Your Browser
Enter packs smoked per day and years smoked to calculate pack-years, used in medical history intake.
How to use Pack Years Calculator
- 1Enter the required date(s) and details above.
- 2Click Calculate - Pack Years Calculator runs instantly, right in your browser.
- 3Read your result below.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Pack-years = packs per day x years smoked - e.g. 1 pack a day for 20 years = 20 pack-years, the same cumulative exposure as 2 packs a day for 10 years.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.