Everything to run maintenance, operations & CI — in one place.
Free, standards-based calculators, procedure generators and playbooks for maintenance planners, reliability engineers, facility managers and Lean/CI practitioners. Built on the standards you're actually audited against.
What disciplined maintenance does to uptime
Move from reactive firefighting to world-class reliability — and measure every step with the free tools below.
Equipment uptime / OEE trend
Built for the whole operation
From the shop floor to the asset register — pick your discipline and dive in.
44 free tools, one workbench
Every calculator gives a verdict, the formula and a plain-English insight — not just a number.
Standards-grade
Every tool cites its basis — ISO 55001, EN 15341, SMRP, JIPM/TPM, SAE RCM, Six Sigma — so your numbers survive an audit.
Instant & offline-friendly
Pure calculators that run in your browser. No sign-up, no upload of plant data, no waiting.
Decisions, not just digits
Each result includes a benchmark and a recommendation: what's good, what's weak, and what to do next.
Report-ready
Print or save any result to PDF, or copy it straight into your report, business case or toolbox talk.
One workbench
Reliability, operations, quality, energy and facilities tools side by side — cross-linked, no tab-hopping.
Free & open
No sign-up, no subscription, no paywall — ever. The site is funded by unobtrusive ads so every tool stays free for everyone.
Procedure & instruction generators
Generate a preventive-maintenance procedure, a machine lockout/tagout procedure, or a root-cause analysis (5 Whys · Fishbone · 8D · A3) — fill a short form, get a clean standards-formatted document ready to print, save as PDF or download to Word. Free, no sign-up.
Bookmark your workbench
New calculators, generators and playbooks ship every week. The whole library lives at one URL.