How much air approximately will your lungs inhale over lifetime?

The average person breathes about 12 times per minute, and each breath brings in about 0.5 liters of air. This means that the average person inhales about 7.2 cubic meters of air per day. Over a lifetime of 80 years, this adds up to about 2 billion cubic meters of air.

Of course, this is just an average. Some people breathe more quickly or deeply than others, and some people live longer than 80 years. But for most people, the amount of air they inhale over their lifetime is somewhere in the ballpark of 2 billion cubic meters.