Blueprint Calculator

Blueprint Calculator

Blueprint Calculator for Once Human shows what it takes to raise a legendary weapon blueprint from one star level to the next. Every star level has a fixed cost that you can pay in one of two ways: enhancement XP from Blueprint Fragments of the same brand (fragments of the same weapon give double XP), or Starchrom paid directly. Pick a starting weapon and star level, pick the target star level, and the calculator lists the XP or Starchrom per star plus the running total. Enter the fragments you own and it works out the cheapest upgrade path, including the same-name bonus.

Select Start WeaponSelect Start Weapon blueprint background

Select Start Weapon

Ideally, select your highest star weapon that you are willing to convert (it can be the same as the weapon you want).

Star 1
Star 2
Star 3
Star 4
Star 5
Star 6
Select Target WeaponSelect Target Weapon blueprint background

Select Target Weapon

Choose the weapon and star level you want to have at the end. This will be the resulting blueprint with the selected number of stars.

Star 1
Star 2
Star 3
Star 4
Star 5
Star 6

Upgrade Cost

Each star level costs a fixed amount of enhancement XP from same-brand Blueprint Fragments (same-name fragments give double XP), or the same star can be bought directly with Starchrom. The schedule below is identical for every legendary weapon blueprint.

Per-star cost

Star 1 → 2:Fragment XP1,600 XPorStarchrom3,000
Star 2 → 3:Fragment XP4,000 XPorStarchrom6,000
Star 3 → 4:Fragment XP6,000 XPorStarchrom9,000
Star 4 → 5:Fragment XP8,000 XPorStarchrom12,000
Star 5 → 6:Fragment XP10,000 XPorStarchrom15,000

Your Upgrade Path

The stars you want must be higher than the stars you currently have.