About this tool
The Wargame / Warhammer Dice Calculator estimates how much damage a unit deals through the classic sequence of to-hit, to-wound and save rolls. It computes locally in your browser with nothing sent anywhere. Enter the number of attacks, the hit, wound and save targets (as d6 values like 3 for a 3+), any armour penetration, the damage per wound, and an optional reroll on hits.
Each roll passes with probability (7 − target) / 6, clamped to the 0–1 range. Rerolling 1s raises the pass chance to p + (1/6)·p, and rerolling all failures raises it to p + (1 − p)·p. Armour penetration worsens the save by adding to its target, so the save chance is (7 − (save + AP)) / 6. The results chain: average hits = attacks · pHit, average wounds = hits · pWound, average unsaved wounds = wounds · (1 − pSave), and total damage = unsaved wounds · damage per wound.
These are expected (average) values across many rolls, not a single dice result — real games swing above and below them. Hit and wound targets run from 2+ to 6+, and a save of 7 (or an AP that pushes it past 6) means no save is possible, so every wound gets through.