Quality Control
Quality control calculators for control charts, process capability, acceptance sampling, Gage R&R, Six Sigma, and OEE.
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Acceptance Sampling Plan Calculator
Generate an acceptance sampling plan based on lot size, AQL, and inspection level. Determine sample size, accept/reject numbers, and operating characteristics.
Control Chart Calculator
Calculate Upper Control Limit (UCL), Lower Control Limit (LCL), and center line for X-bar, R, and S control charts using process statistics and sample size.
FMEA Risk Priority Number Calculator
Calculate the Risk Priority Number (RPN) from Severity, Occurrence, and Detection ratings. Assess failure mode risk level and recommended priority actions.
Measurement System Analysis (Gage R&R) Calculator
Evaluate measurement system quality with Gage R&R analysis. Calculate repeatability, reproducibility, GRR percentage, number of distinct categories, and determine system acceptability.
Histogram Bin Calculator
Calculate the optimal number of histogram bins and bin width using Sturges, Scott, Freedman-Diaconis, Square Root, and Rice rules based on your dataset properties.
OEE Calculator
Calculate Overall Equipment Effectiveness from availability, performance, and quality metrics. Identify downtime, speed, and defect losses in manufacturing.
Pareto Chart Generator
Generate a Pareto analysis from category defect counts. Identify the vital few causes that account for the majority of problems using the 80/20 rule.
Process Capability (Cp/Cpk) Calculator
Calculate process capability indices Cp, Cpk, and Cpm from process statistics and specification limits. Determine if your process meets quality requirements.
Six Sigma Level Calculator
Calculate sigma level, DPMO, defect rate, and process yield from defects, opportunities, and units. Includes performance level assessment and COPQ estimate.
Yield Analysis Calculator
Calculate First Pass Yield (FPY) and Rolled Throughput Yield (RTY) across up to 4 process stages. Track cumulative defects and identify the weakest process stage.