The Last Caretaker Calculators
All five tools, free, no sign-up. Data baselines and sources are shown on each tool's page.
Power Grid Calculator
Cable routing, extender placement, and material costs. Accounts for walls, floors, and obstacles (1 m per cable item, 20 m max per run).
Launch Tool
Skill Tree Planner
Interactive 21-tier planner with build comparison and ROI analysis. No respec in this game — every point is permanent.
Launch Tool
Efficiency Matrix Calculator
Compare generators, calculate ROI and payback time, and factor in the +10% Efficiency Matrix bonus.
Launch Tool
Lazarus Rack Readiness Checker
Build a food combo from all 13 food types and verify the Height ≥ 30 / Weight ≥ 20 / Life Exp ≥ 10 thresholds before your seed run — no more "not enough".
Launch Tool
Resource Optimizer
Recycling-efficiency estimates and allocation trade-offs for Diesel, Metal, and Hightech.
Launch Tool