Tolerance

allowed variation of a characteristic

Tolerance = USL − LSL

Tolerance is the total permitted variation of a dimension or property: the difference between the upper and lower specification limit. It is set by design and customer needs, not by what the process can do.

Calculate it

Tolerance Stack-Up: Worst case, RSS and Monte Carlo for a dimension chain, with contributions.

Related terms

• Specification limits (LSL, USL): voice of the customer
• RSS tolerance analysis: root sum of squares stack-up