Quality and production
Simple process sigma level
Calculates an approximate sigma level as spec limit distance divided by standard deviation.
Related 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.
Availability rate
Calculates OEE availability from operating time and planned production time.
Bilateral limits from nominal tolerance
Finds upper and lower limits for a symmetric bilateral tolerance.
c-chart control limits
Calculates basic c-chart limits for an average count of nonconformities.
Clearance from hole and shaft
Calculates signed clearance as hole diameter minus shaft diameter.