Factorio Labs Needed Calculator

Lab

Quality

Research speed tech

% bonus

Research productivity tech

levels · +0%

Productivity modules in the lab off

Prod modules add productivity (fewer packs, faster finish) but slow the lab.

Speed beacons off

beacons ·

/ beacon ·

Beacon effect scales by √(beacon count): diminishing returns as you add more.

Research job

Technology to research

units × s / unit

A technology's cost: number of research units and seconds per unit at speed 1. Read them off the tech tooltip (e.g. 1000 × 60s).

Finish within

minutes

Labs needed

lab speed -

productivity -

packs / min -

Lab speed-

Each factor multiplies the next.

Productivity-

Bonuses add together - more productivity means fewer packs and a faster finish.

Research per lab	-
Total packs (per science type)	-

Labs count rounds up to whole machines. Pack totals are per science-pack type, assuming one of each pack per research unit; productivity and biolab drain reduce them.