Factorio Quality Guide: Tiers, Modules, Ingredients, and Item Effects

Factorio: Space Age introduced quality, a system that lets players craft buildings and equipment with stronger attributes. Better quality can improve stats such as turret range, health, crafting speed, energy output, and more.

How Quality Works in Factorio 2.0

According to Factorio's quality overview, there are two main ways to create higher-quality items:

• Use ingredients of a specific quality
• Use quality modules for random upgrade chances

Both methods can produce stronger items, but they behave differently.

Crafting with Quality Ingredients

Item recipes have quality variations. To craft an item at a specific quality, the ingredients must match that required quality. The ingredients also need to share the same quality for this method to work correctly.

Fluids are an exception because they do not have quality requirements. The same fluid can be used when crafting items of any quality.

Careful sorting matters. If high-quality ingredients accidentally enter a lower-quality production line, they can disrupt the factory's flow. Factorio already has enough ways to punish casual belt planning.

Crafting with Quality Modules

Quality modules add a chance for machines to produce higher-quality results. The chance depends on the module tier:

• Tier 1: 1%
• Tier 2: 2%
• Tier 3: 2.5%

When a crafting machine starts a recipe, it uses the sum of quality chances from installed modules. If the roll succeeds, the item upgrades. The game then repeats the process, but further upgrade rolls use a constant 10% chance until a roll fails.

Quality modules are only needed to improve quality through this random system. Without them, crafting produces items at the base quality of the materials used. Like ingredient-based crafting, inputs must be the same quality.

Quality Tiers and Bonuses

Vanilla Factorio has five quality tiers:

• Normal, with base values and effects
• Uncommon, with a +30% bonus
• Rare, with a +60% bonus
• Epic, with a +90% bonus
• Legendary, with a +150% bonus

Known quality effects include:

• +1 equipment grid size
• +1 tile reach for power poles
• +10% turret range
• +100% durability on consumable items
• +30% crafting speed
• +30% energy output
• +30% health
• +30% positive module effects
• +30% robot limit
• +30% robot recharge rate
• Faster inserters
• Increased ammo damage
• Increased output rate on nuclear reactors, boilers, and steam engines or turbines
• Larger accumulator capacity
• Larger inventory
• Larger radar scan range
• Reduced beacon power consumption
• Reduced resource depletion on miners

Some buildings only receive specific benefits. For example, walls and transport belts may only gain effects such as increased health.