Browser quality statistics for MSA · SPC · DOE
A Minitab-like workspace for quality engineers and Six Sigma — local-first, offline-capable, data never uploaded.
Free quality tools
Cp / Cpk calculatorPaste measurements and spec limits to get Cp, Cpk, Pp, Ppk, and expected PPM.Gage R&R calculatorCrossed ANOVA Gage R&R: %study variation, %tolerance, ndc, and the AIAG verdict.Sample size calculatorHow many parts to test for a 1- or 2-sample t-test or a defect-rate comparison.Control chart constantsA2, A3, B3, B4, D3, D4, d2, d3, and c4 for subgroup sizes 2–25, with limit formulas.Control chart rulesThe eight Nelson / Minitab tests for special causes and how they map to Western Electric rules.