H2W Blog

Visual guides for people who live on the shop floor

OEE, maintenance, quality and industrial management explained with real numbers, drawings and calculators — based on 20 years of experience in the plants of world leaders.

5-part series

From measurement to results

From what OEE is to the connected plant: read in order or jump straight to the topic that matters to you.

720 h → 331 h
Part 1 of 5 · Visual guide · OEE

What is OEE and how it impacts the final product cost

A month has 720 hours. Your line truly produces in 331. Understand OEE, calculate it in 4 steps, meet the invisible losses and see how much each efficiency point changes cost per ton — with a calculator.

7-min read · Interactive calculator
Read the guide →
A × P × Q = OEE
Part 2 of 5 · Tool · OEE

OEE calculator: formula, worked example and what each point is worth

Availability, performance and quality in seconds, the 3 losses in minutes and the value of 1 OEE point on your line — with Excel formulas.

2 min to calculate · Online calculator
Calculate OEE →
OEE ↔ r = 0.94
Capability0.94MTTR−0.70MTBF0.56Safety0.19TEEP0.03
Part 3 of 5 · Research · OEE and KPIs

OEE never walks alone: what 2 billion units reveal about safety, maintenance and quality

25 lines, 285 days, data straight from the PLCs. Which indicators move with OEE — and which have nothing to do with it. With an interactive correlation map and a post-stop ramp simulator.

8-min read · Interactive map
Read the research →
+10 pp → 92 h/month
Part 4 of 5 · Guide · MES ROI

MES ROI: how to calculate the return of an MES system

How much is each OEE point worth, and how much of it becomes cash? A step-by-step method, with a worked example, a calculator and the mistakes that most distort the numbers.

9-min read · Calculator
Read the guide →
MES · CMMS · SPC
Part 5 of 5 · Guide · Plant software

MES, CMMS, SPC, LMS, CIL, Warehouse: which system solves each plant problem

Too many acronyms, too little clarity. This guide starts from the plant problem — unexplained stops, late preventive work, paper quality records, expired training — and shows which system solves it.

10-min read · Problem → system table
Read the guide →

Coming next

  • Why CMMS matters for plant efficiency
  • Contractor management with AI document validation