Free tools
Free tools for manufacturers
Fast, correct tools for the work you actually run on the shop floor and in the toolroom. No signup, nothing leaves your browser. Built by the team behind VoraSuite, manufacturing control and evidence software.
Process capability
Cp, Cpk, Pp and Ppk calculator
Paste your measurements and specification limits for capability indices, a plain-English verdict, a distribution histogram and a Cpk-to-PPM converter.
Open the Cpk calculatorMeasurement system analysis
Gage R&R calculator (ANOVA method)
Enter a crossed parts x operators x trials study for %GRR, repeatability, reproducibility, part variation and ndc with a verdict against the standard acceptance bands.
Open the Gage R&R calculatorSampling and acceptance
AQL sampling plan calculator (ANSI/ASQ Z1.4)
Enter a lot size, inspection level and AQL for the code letter, the sample size and the accept and reject numbers, with the arrow rule and the 100% inspection case called out.
Open the AQL calculatorToolroom planning
Toolroom planning board
Drag this week of repairs and preventive maintenance onto the right toolmaker and the right day, then print the plan. A quick taste of how VoraTool schedules toolroom work.
Open the planning boardStatistical process control
Control chart calculator (X-bar & R, I-MR)
Paste a column of measurements for X-bar & R or I-MR control limits, the rendered charts and every Nelson rule flag, each explained in plain English.
Open the control chart calculatorDescriptive statistics
Standard deviation calculator
Paste a column of measurements for the mean, median, range, sample and population standard deviation, variance and coefficient of variation, with a distribution histogram.
Open the standard deviation calculatorVoraControl
These tools answer one question for one dataset. VoraControl watches every characteristic on every control plan, every shift.