Engineering tool
Tolerance and deviation calculator
Evaluate measured values against a toleranced dimension and see how much of the tolerance each one uses.
Inputs
Separate values with spaces, commas or new lines. Example shows a Ø25 H7 bore.
Result
Enable JavaScript to use this calculator. The method and formulas are explained below.
How to use
Enter nominal, upper and lower tolerance (for example +0.021 and 0 for a Ø25 H7 bore) and paste measured values. The tool calculates limits and evaluates each value.
Measurement uncertainty
Results close to a limit should be judged considering measurement uncertainty and the decision rule agreed with the customer, for example as described in ISO 14253-1. This tool does not apply uncertainty.
Use of this toolThis calculator is an educational aid. It is not a substitute for the governing standard, the customer specification or engineering approval. Verify results before using them for acceptance decisions.