Are there any damage calculators to calculate the damage easier and faster than play testing all the time you make an edit?

All I know is one on a web page that doesn't calculate the damage well (Said I would deal on 50-75 damage but was hitting on 200) and another that was giving many positive comments but was uploaded on megaupload and so not acquirable :/

You mean that you wanna calculate it before testing the game right?
You can use a simply-and-fast excel sheet you only have to search the algorithm of the damage calulator of RPGXP and the game is set

The algorithm is:
for the normal Attack is ---> damage = ((attacker attack - target physical defence/2) * (20 + attacker strength) / 20) + random 15%
for the skills is ----> power = skill power + (user attack *skill attackforce / 100) - (target physical defence * skill physical def force /200)- (target magical defence * skill magical def force /200)
rate = 20 + user strength * skill strength force /100 + user dexterity * skill dex force /100 + user agi* skill agi force /100 + user int* skill int force /100 + random variance

damage = power * rate /20

That's all

Thanks hopefully I manage to do it right.

I hope this list could be useful even if it's a bit confusing... sorry!
On the other hand, if you have trouble with it just ask