What are you working out?
All 6 quality calculators
Acceptance Sampling Calculator
Builds a binomial acceptance-sampling plan with its operating characteristic curve, producer and consumer risks and average outgoing quality. Use it to design or check a lot inspection plan.
Control Chart Calculator
Computes X-bar and R control limits from your subgroups using derived control-chart constants, and flags out-of-control points. Use it to set up a control chart from sample data.
FMEA RPN Calculator
Scores failure modes by severity, occurrence and detection to a risk priority number, with a severity gate for high-harm modes. Use it to rank and triage risks in an FMEA.
Gage RR Calculator
Runs a Gage R&R measurement-system analysis by ANOVA, reporting repeatability, reproducibility, percent study variation and the number of distinct categories. Use it to judge whether a gauge is adequate.
Process Capability Calculator
Computes the process capability indices Cp, Cpk, Pp and Ppk against your specification limits, with the estimated defect rate. Use it to judge whether a process meets its tolerance.
Sigma DPMO Converter
Converts between defects per million opportunities, yield and sigma level, including the 1.5 sigma shift. Use it to express process performance on the Six Sigma scale.