Saving Throws & Skills Calculator
Calculate Pathfinder 1e Fortitude, Reflex, Will and skill modifiers. Enter class base saves, current ability scores and skill ranks to see each total’s contributions.
PATHFINDER 1E01 · Abilities & equipment
Enter current ability scores, including applicable adjustments. Modifier = floor((score − 10) / 2).
Enter penalties as negative numbers, after masterwork, materials and other reductions. Armor and shield penalties add together; use the worse of that total and the load penalty. Ranks cannot exceed total Hit Dice.
02 · Saving throws
Enter base save bonuses from your class tables. For multiclass characters, add each class's base save bonus first. Use only the highest applicable resistance bonus. Other modifiers are the net total after stacking; exclude resistance already entered.
Roll 1d20 + total. A natural 1 fails; a natural 20 succeeds. Armor check penalties and armor's maximum Dexterity bonus do not limit saving throws.
03 · Skills
Check every class skill granted by your classes, archetypes or other features. The +3 bonus applies once, only with at least one rank. Other modifiers include applicable racial, feat, item, size and circumstance adjustments, after stacking.
Each Craft, Perform and Profession specialty has separate ranks and modifiers. Use Remove specialty to delete an additional specialty. Other inputs stay unchanged.
Rules & scope
- Skills use ranks + ability modifier + class skill bonus + check penalty + other modifiers. A natural 1 or 20 does not automatically fail or succeed on a skill check.
- Armor check penalties apply to Strength- and Dexterity-based skills, including Swim. Pathfinder 1e does not double this penalty for Swim. Maximum Dexterity bonus to AC does not cap skill modifiers.
- Zero ranks in a trained-only skill restrict normal use. Knowledge allows untrained checks only at DC 10 or lower. Handle Animal allows limited checks with domestic animals. Sleight of Hand allows limited untrained tasks at DC 10 or lower.
- Fly still requires a means of flying. Class features can change abilities or permit untrained use; those exceptions, armor nonproficiency, skill unlocks and situational restrictions are not automated.
- Use current scores for ordinary calculations. Ability damage, drain, temporary effects and special class rules can affect checks differently. Enter their applicable check adjustments in Other modifiers without counting them twice.
- This tool calculates modifiers, not rank budgets, success chances or eligibility for every task. Enter bonuses only when applicable and after resolving stacking. Conditional save bonuses belong in Other modifiers for the relevant situation.
Rules checked 1 October 2026. Core skills; no automatic class or feat selection.
Read your totals
Fortitude uses Constitution, Reflex uses Dexterity and Will uses Wisdom. Each save total is base save + ability modifier + resistance + other modifiers. Each skill total is ranks + ability modifier + any class skill bonus + applicable check penalty + other modifiers. These are bonuses to your d20 roll, not the roll result or the DC. Buffs are not imported automatically: enter applicable adjustments once.