Reference
Quick, accurate references for the D&D 5e rules you look up mid-game.
D&D 5e Concentration Rules Explained
You can concentrate on only one spell at a time. Taking damage forces a Constitution save (DC 10 or half the damage, whichever is higher) or the spell ends.
D&D 5e Conditions Quick Reference
A plain-language table of all 5e conditions, from blinded and charmed to stunned and unconscious, with a short summary of what each one does.
D&D 5e Currency Conversion Table (CP, SP, GP, PP)
In D&D 5e, 10 copper = 1 silver, 10 silver = 1 gold, and 10 gold = 1 platinum. Here's the full conversion table and quick-reference math.
D&D 5e Death Saving Throws: Rules Reference
At 0 HP you roll a d20 each turn. 10 or higher is a success, three successes stabilize you, three failures kill you. Full rules here.
D&D 5e Exhaustion Levels Explained
5e exhaustion has 6 cumulative levels, from disadvantage on ability checks at level 1 to death at level 6. A long rest removes one level.
D&D 5e Rest Rules Reference (Short and Long Rest)
A short rest is at least 1 hour and lets you spend Hit Dice for HP. A long rest is at least 8 hours and restores HP, spell slots, and Hit Dice.
D&D 5e Spell Slots by Class and Level
Full casters like Wizard and Cleric use the standard slot table. Half casters gain slots slower from level 2, and Warlocks use separate Pact Magic.