Quality Tool
SPC Control Charts
X̄-R / I-MR / p charts with Western-Electric rules and live out-of-control flags.
Live · free basic tier
Free tier
Free: one chart type, up to 30 subgroups, basic limits.
This calculator is being finalized — free basic tier, live soon.
Serves these standards
Unlock unlimited & batch
Advanced features — batch runs, saved studies, export — come with a LabKitPro membership.