You summon elementals that appear in unoccupied spaces that you can see within range. You choose one the following options for what appears: • One elemental of challenge rating 2 or lower • Two elementals of challenge rating 1 or lower • Four elementals of challenge rating 1/2 or lower • Eight elementals of challenge rating 1/4 or lower. An elemental summoned by this spell disappears when it drops to 0 hit points or when the spell ends. The summoned creatures are friendly to you and your companions. Roll initiative for the summoned creatures as a group, which has its own turns. They obey any verbal commands that you issue to them (no action required by you). If you don't issue any commands to them, they defend themselves from hostile creatures, but otherwise take no actions. The GM has the creatures' statistics.
At Higher Levels. With certain higher-level slots you summon more creatures: twice as many with a 6th-level slot and three times as many with an 8th-level slot.
RollQuest ships the D&D 2014 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.