Calculate your character stats, HP/SP. (For more advance calculator which include pet, saddles, brooch, equips click here)
This calculator calculates the max. mobs level you can combo with a team.
Formula: (Character LVL + Pet LVL) / No. of people - 25 > Max. Mobs LVL
(SPD difference must be within 99 and the Average Team Level must be higher than the max. mobs level calculated in order to combo 100%.) For RB characters, add 99 to your level, for instance, Level 150 RB = Level 249)
Formula: (Character SPD + Pet SPD) / No. of people = Team average SPD
The team average SPD must be greater than the mobs SPD to attack first. (Not applicable to quest mobs.)