Board Thread:Questions and Answers/@comment-76.84.113.246-20130314081426/@comment-4137081-20130319181454

The plants firing power is measured in the number of Pea Equivalents that they can fire per second. So for a Pea Shooter, it can fire 0.7 peas per second. A Cabbage-pult only fires .35 cabbages every second, but they do twice as much damage giving you a Pea Equivalent per Second of 0.7.

Because most of the plant ranges are unlimited, I ignored their range as a factor. If you are using any number of normal plants (Pea Shooters, etc) against normal zombies (not balloon, snorkel, etc), then the calculator while output the correct values. If you are using Fume Shrooms or Gloom Shrooms, simply avoid adding the ZDN's together because the number of zombies does not affect the damage these plants do.

The calculator was designed so that you can see how long, in patches and seconds, it would take for example 2 Gattling Peas to take down 3 Gargantuars. A Gattling Pea has a PE per second of 2.8, So 2 Gattling Peas is 4.6. A Gargantuar has a ZDN of 25, and it's health is 150, so 3 Gargantuars has ZDN 75 and health 450. If we plug those numbers into the calculator, it lets us know that it would take approximately 16.3 patches and 97.3 seconds for the 2 Gattling Peas to kill the 3 Gargantuars. Meaning your Gattling Peas are screwed unless they get more help.