Triggered skills
Chance-to-cast affixes, idols, and tree nodes contribute at a build-derived rate, with the cooldowns and rate caps the game actually applies.
Offline build planner for Last Epoch
The number you plan with is the number you get.
Most planners can lay out a tree. The hard part is the damage, and that is where LEB puts its effort: triggers, minions, conversion, and ailments, all the way through to one Full DPS figure you can act on.
Free and open source. Runs entirely on your machine.
- 189,540 assertions per run across the whole build corpus
- 262 real builds tested imported from actual characters
- 3,501 engine tests green on every change
- 412 uniques modelled for Last Epoch 1.4
Every change to the engine is re-run against a corpus of imported characters before it ships. The figures above are counted, not estimated.
What the engine actually models
These are the parts most likely to be missing, wrong, or silently dropped somewhere else. Each one is covered by tests that fail loudly if it regresses.
Minions
Inherent per-level scaling, minions auto-summoned by gear and passives, and multi-ability minions folded into one number.
Damage conversion
Skill-scoped base conversion that conserves damage through opposing, cyclic, and multi-hop chains instead of quietly deleting it.
Ailments and DoT
Application chance over 100%, correct stack caps, resistance and penetration on ticks, and a separate Total DoT DPS row.
Everything else you would expect
The whole tree, offline
Passive tree, skill trees, and specialisations. No account, no server, no waiting.
Items and crafting
Affixes, uniques, sets, legendaries, and idols, crafted the way the game crafts them.
Import in seconds
Straight from your save file, or from a Last Epoch Tools or Maxroll planner link.
Share with one link
Build sharing produces a short link on this domain that imports straight back into LEB.
Config that explains itself
Relevant options are highlighted, each naming the node, skill, or item that made it relevant.
Notes in Markdown
Live preview, image embeds, a table of contents, and references to your other loadouts.
Keep it going
LEB is built by one person and it stays free. If it saved you a respec, this is where you can help.