About D2 Armor Lab
D2 Armor Lab is an unofficial, no-login Destiny 2 buildcrafting tool designed to turn desired stats into a short farming specification.
Why this calculator exists
Inventory optimizers are excellent at finding combinations from armor a player already owns. They are less direct when the question comes earlier: which archetype, tertiary, and tuning roll is still missing? D2 Armor Lab models that pre-inventory decision and gives every result as a five-piece checklist.
How the data is maintained
Game rules are taken from Bungie's published Armor 3.0 and Monument of Triumph updates. The model currently includes all 12 archetypes, Tier 5 30/25/20 rolls, masterwork floors, +5 and +10 stat mods, tuning, and signed subclass fragment offsets. The calculator shows its assumptions beside the result so a future sandbox change can be spotted instead of silently producing old advice.
What the tool does not do
It does not connect to Bungie, inspect inventory, choose armor set bonuses, or promise that a random drop will occur. It also does not replace an owned-armor optimizer. Use the tool comparison guide to decide which stage of the workflow you are in.
Independence
D2 Armor Lab is a community project. It is not affiliated with, sponsored by, or endorsed by Bungie. Destiny, Destiny 2, Bungie, and related marks belong to their respective owners.