basic

D&D Spell Save DC Calculator

DC = 8 + proficiency + spellcasting modifier.

Compute a D&D 5e spell save DC and spell attack bonus from your level (for proficiency), and your spellcasting ability modifier (Int / Wis / Cha): DC = 8 + prof + mod; attack = prof + mod.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Prof = ceil(level/4) + 1. DC = 8 + prof + mod. Attack = prof + mod.

In depth

Compute a D&D 5e spell save DC and spell attack bonus from your level (for proficiency), and your spellcasting ability modifier (Int / Wis / Cha): DC = 8 + prof + mod; attack = prof + mod.