Toughness comparison · 40k · average-case math

Durability Duel

Five 3-wound models on a 2+ save, or four 4-wound models on a 3+ with −1 to wound? Edit either unit and see how many hits it takes to wipe each one.

01The two units

Models Wounds Toughness Save Invuln Feel No Pain

−1 to wound against this unit

Models Wounds Toughness Save Invuln Feel No Pain

−1 to wound against this unit

02Test one weapon

Pick a row in the table below to load it here, or type your own profile. Damage accepts 2, D3, D6, D6+2 and so on.

Weapon Strength AP Damage Hit on Lethal hits

Unit A–

Unit B–

–

03Against common weapon types

These are generic profiles, not specific datasheet weapons. The numbers are attacks needed to wipe each unit. The bar leans toward whichever unit takes more attacks to kill. Click a row to load it above.

A tougherB tougherWithin 5%

Weapon type	S	AP	D	A: attacks to wipe	B: attacks to wipe	Lean	Tougher

04How it's calculated

The wound roll comes from Strength against Toughness. The −1 to wound adds one to the roll needed, capped at 6+, so an unmodified 6 still wounds. The save used is the better of the armour save after AP and the invulnerable save.

Damage doesn't spill over between models. Each model's expected number of failed saves to die comes from an exact calculation over the damage roll, including Feel No Pain on each point of damage. Multiply by model count, then divide by the chance that one attack becomes a failed save.

All results are averages, not dice simulations. Rules not modelled: Sustained Hits, Devastating Wounds, Twin-linked, re-rolls, Melta range bonuses, damage reduction and cover.

Built by Member Hour Gaming, a Warhammer 40,000 club in Kent County, Delaware. Not affiliated with Games Workshop.