Calculator catalog
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Found 27 calculators
Cp process capability
Calculates the Cp capability index from specification limits and process standard deviation.
Cpk process capability
Calculates the Cpk capability index from specification limits, mean, and standard deviation. Cpk can be negative when the mean is outside tolerance.
Simple process sigma level
Calculates an approximate sigma level as spec limit distance divided by standard deviation.
Scrap rate
Calculates scrap percentage from scrap count and total count.
Yield rate
Calculates yield percentage from good count and total count.
First pass yield
Calculates FPY from good first-pass units and total units as an auxiliary quality metric.
Rolled throughput yield
Multiplies three process-step yields to estimate overall RTY as an auxiliary quality metric.
Rework rate
Calculates the percentage of units requiring rework as an auxiliary quality metric.
DPMO
Calculates defects per million opportunities from defects, units, and opportunities per unit.
PPM defects
Calculates defects per million units as an auxiliary quality metric.
Xbar control limits
Calculates the existing sigma-based Xbar limits and Xbar-R chart limits from the grand mean and average range.
p-chart control limits
Calculates basic p-chart limits from pBar and sample size without creating an SPC chart.
np-chart control limits
Calculates basic np-chart limits from pBar and sample size without automatic process assessment.
c-chart control limits
Calculates basic c-chart limits for an average count of nonconformities.
u-chart control limits
Calculates basic u-chart limits from uBar and sample size.
OEE
Calculates OEE from availability, performance, and quality percentages.
Availability rate
Calculates OEE availability from operating time and planned production time.
OEE quality rate
Calculates the OEE quality component from good count and total count.
Tolerance stack worst case
Sums three tolerance contributors in a simple worst-case stack.
Tolerance stack RSS
Calculates total tolerance as the root sum square of three contributors.
Bilateral limits from nominal tolerance
Finds upper and lower limits for a symmetric bilateral tolerance.
Unilateral upper limit
Calculates the upper limit from a nominal value and positive upper tolerance.
Unilateral lower limit
Calculates the lower limit from a nominal value and signed lower tolerance.
Clearance from hole and shaft
Calculates signed clearance as hole diameter minus shaft diameter.
Expanded uncertainty
Multiplies standard uncertainty by a coverage factor.
Measurement result with uncertainty limits
Finds lower and upper limits of a measurement result from a given uncertainty.
Measurement uncertainty budget builder
Independent Type A/B budget with distributions, sensitivities, RSS, Welch–Satterthwaite and explicit k.