Companion & Mount Hit&Damage Calculator

Feeds Power Attack's BAB-based scaling only — each attack below has its own Base To-Hit field. For sources with a known progression table, Hit Dice and BAB are pre-filled automatically; type over either to take manual control (use "Reapply progression" above to go back to auto-fill).

A species preset fills the Core Rulebook starting scores and attacks, including its 4th/7th-level advancement when reached. Everything remains manually editable afterward.

Check this only when making a single attack action this turn (not a full attack) — this is what makes Vital Strike (and its Improved/Greater versions) usable, on the one attack line you choose below in Results. It does NOT by itself change any attack's Strength multiplier or Power Attack scaling — those come from each attack line's own Mode (Primary/Secondary) and Dmg mult (×1.5 only when that line is truly the creature's only natural attack, or a two-handed weapon), set per line below in Attacks.

These selectors update every existing attack line and set the default for attacks you add manually afterward. You can still choose a different ability on an individual attack row. Almost every companion uses Strength for both; change this only for a rule that specifically grants another ability to those attacks.

Presets only fill editable attack rows; they never lock the creature to a species. Base To-Hit is the attack's BAB/size/other built-in value before its selected ability and active effects. Base Damage is a fixed amount before its selected ability and effects. Damage dice and damage type are also editable. For an Eidolon or Animal Companion/Mount at level 9+, the 3-or-more-natural-attacks Multiattack rule (see above) is applied automatically to every generated natural attack line — do not also add the "Multiattack" feat below and hand-adjust the same lines, or the -2 gets applied twice. Only a manually-added secondary natural attack line needs its own Base To-Hit adjusted by hand.