Process Capability · Cp & Cpk Calculator

Cp & Cpk Calculator

Process Capability · USL, LSL, μ, σ

USL (Upper Spec)

LSL (Lower Spec)

Process Mean (μ)

Sigma (σ)

live | auto‑calculate

Cp = (USL − LSL) / (6 × σ) = —

Cpk = min( (USL − μ) / (3×σ), (μ − LSL) / (3×σ) ) = —

CPU = — | CPL = —

—

Cpk

—

Sigma Level (Z)

—

USL: —

LSL: —

Mean (μ): —

Sigma (σ): —

≥1.33 1.00 – 1.33 <1.00 | Cpk ≤ Cp

⚬ process capability · cp & cpk with chart ⚬