Thirty-four empty soda cans make a pound. The total presumes that the soda cans are a standard 12-ounce size. Soda cans exist that are both smaller and larger than the standard size, which necessarily alters the count needed for a pound.
The rate paid for scrap metal, including empty soda cans, changes frequently. Due to the fluctuation in the market price for scrap metal, a person collecting empty soda cans is wise to develop a strategy for holding on to the cans until the price is at a point that provides a greater level of return rather than simply turning them over to a recycling center on a set schedule.