Cigarettes		per day		yrs
Cigarettes		per day		yrs
Cigarettes		per day		yrs
Cigars or spliffs		per day		yrs
Cigarillos		per day		yrs
Pipe (no. of bowls)		per day		yrs
Tobacco (ozs)		per week		yrs
Tobacco (grams)		per week		yrs
Water pipe (20 min session)		per week		yrs

This calculator helps to produce a numerical value of lifetime tobacco exposure called pack years. A pack year is defined as twenty cigarettes smoked everyday for one year. People who smoke often vary their smoking habits over the years which can make it difficult to create a pack score. This smoking pack year calculator simplifies the task.

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