how to calculate my dps (firestorm)

My tree : http://www.pathofexile.com/passive-skill-tree/AAAAAgMAAuMFQgdjB6UNjRFQEmkXHBmFGmwc3B8CIvQkqilPKo0qmCycLUc2xTbYNuk4GzvhPAU9X0GWRKtG10kbSbJQQlJTVa5XK13yZp5sC3F5euZ9U33SghCCm4M4h2WIG4t6i4yMNo5kj6aRz5eFl5WX9JwtnWOdgJ2un9

My gear :


And plz explain the calculation

FS ball base * total additive * multipliers * balls per second will give you a rough idea but not all balls hit the target.

Also, FS will overlap itself (potentialy multiple times) driving up the DPS on a stationary or slow target.

Good luck.

Edit: just to spell it out, dps for FS has subjective elements and can not be calculated in a meaningful way without straight up testing. I.e. the speed of the mob plays a huge roll, not to mention estimating how many balls hit a stationary target.

Look, on the avg damage wrote 832, that for a ball? Or should I add and multiple more things? ( I mean per ball )

Well anyone know? If I want calculate the damage per hitting ball, is it the avg that shown when u stand over the skill, or is it formula that only contain this number?

Check out this thread

http://www.pathofexile.com/forum/view-thread/919493

I see now, that help.

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grofire wrote:

Look, on the avg damage wrote 832, that for a ball? Or should I add and multiple more things? ( I mean per ball )

The tool tip on the bottom right will tell you the final damage of each ball. Ignore the dps. It will read....

500-700 fire damage
150-300 chaos damage (if you have added chaos or something)

Add these together to get ball damage.