Process Capability Calculator

Estimate process potential and overall performance from sequential measurement data.

Measurement input

Paste numbers separated by commas, spaces, or new lines, or import an Excel file. Excel import reads numeric cells in the first column of the first worksheet.

Measurement values

Import Excel (.xlsx/.xls)

Lower specification limit (LSL)

Upper specification limit (USL)

Subgroup size

Report information

Optional details printed on your exported PDF report.

Company

Part name

Part number

Drawing revision

Cavity / Machine

Measurement date

Prepared by

Company logo (PNG/JPEG)

Minimum Cpk criterion (report only)

Methodology: for individuals, within σ = average moving range / 1.128. For equal-sized subgroups, within σ = average subgroup sample standard deviation / c4(n). Capability assumes process stability and approximately normal data. Charts are exploratory; verify with reference software before critical decisions.

Process Capability Calculator

Measurement input

Report information

Capability results