OEE Calculator
Calculate Overall Equipment Effectiveness from your production data. Get Availability, Performance, and Quality breakdown with Six Big Losses analysis.
ManufacturingProcess Capability (Cpk)
Calculate Cp, Cpk, Pp, Ppk from measurement data. Paste your values, set spec limits, get full capability analysis with sigma level and expected yield.
QualityDPMO & Sigma Level
Convert between DPMO, sigma level, yield, and Cpk. Includes the 1.5 sigma shift. Enter any metric and get all others instantly.
Six SigmaControl Chart Generator
Create X-bar/R, I-MR, p, and np control charts. Paste your data, get interactive charts with UCL/LCL and Western Electric rule violations.
SPCGage R&R Calculator
Measurement System Analysis using the Average & Range method. Get repeatability, reproducibility, GRR%, NDC, and AIAG verdict.
MSAEngineering Unit Converter
Convert pressure, torque, force, viscosity, flow rate, and 200+ engineering units. Covers 14 categories used in manufacturing and engineering.
EngineeringNeed these calculations in your software?
All of these tools are available as REST APIs on RapidAPI. Integrate OEE, SPC, capability analysis, and more into your manufacturing applications.
Six Sigma API Unit Converter APIAbout Quality Tools Hub
Quality Tools Hub provides free, professional-grade manufacturing and engineering calculators. Built by engineers for engineers, these tools cover the statistical methods used across the DMAIC cycle in Six Sigma and lean manufacturing programs.
Who Are These Tools For?
- Quality Engineers running capability studies, Gage R&R, and SPC analysis
- Plant Managers tracking OEE and identifying equipment losses
- Six Sigma Practitioners (Green Belts, Black Belts) working improvement projects
- Manufacturing Engineers converting between engineering units
- Students learning Six Sigma concepts and statistical methods
No Signup Required
All calculations run directly in your browser. No account needed, no data sent to servers, no limits on usage. Your measurement data stays on your machine.
API Access
For developers building manufacturing software, MES systems, or IoT platforms: every calculation available here is also available as a REST API. Visit our Six Sigma API or Unit Converter API on RapidAPI.