May 7, 2025 by Robert M. Aldrich CPK to PPM Calculator CPK to PPM Calculator Convert between Process Capability Index (CPK) and PPM defect rates Select Calculation Type Choose whether to convert CPK to PPM or PPM to CPK. CPK to PPM PPM to CPK Specification Type One-sided: Defects beyond one limit (upper or lower). Two-sided: Defects beyond both limits. Two-sided (Upper & Lower Limits) One-sided (Upper or Lower Limit) CPK Value Process Capability Index, measuring how centered and capable a process is (e.g., 1.33 for a capable process). PPM Value Parts Per Million defect rate, representing defective units per million (e.g., 1000 PPM = 0.1% defects). Calculate Result Copy Download as Text Calculation History Clear All No calculation history yet.
