What spell slot count formula can I use to base my homebrew

What spell slot count formula can I use to base my homebrew spell slot calculator 5e The Creating Spell Slots table shows the cost of creating a spell slot of a given level You can create spell slots no higher in level than 5th Any spell spell slot counter Spell Slots You determine your available spell slots by adding together all your levels in the bard, cleric, druid, sorcerer, and wizard classes, half

spell slot counter Spell Slots You determine your available spell slots by adding together all your levels in the bard, cleric, druid, sorcerer, and wizard classes, half

spellbinding mystery slot This calculator uses the multiclassing rules found in the 5th Edition Player's Handbook, with the assumption that artificers will be treated as half-casters, Spell Slots You determine your available spell slots by adding together all your levels in the bard, cleric, druid, sorcerer, and wizard classes, half