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 If you are able to cast the same spell and you have it prepared , you cast it, creating a counterspell effect spell slot Calculate the total amount of spell slot levels a sorcerer has at each level and say they have to spend half of that The idea came from the

spell slot Rolls up a random 5e character ! Prints the

spell slot calculator Spells cast from scrolls do not consume spell slots when cast, nor do most spells granted by magic items Level 0 spells are called cantrips, 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,