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Dimensional Tolerance Judgment
Enter nominal size and upper/lower deviations, paste measured values → automatic pass/fail, overshoot amount and tolerance usage
Measured values (one per line, or separated by spaces / commas)
How it works
· Limit sizes: Upper limit = nominal + upper deviation, Lower limit = nominal + lower deviation; Tolerance T = upper deviation − lower deviation.
· Judgment: lower limit ≤ measured value ≤ upper limit is conforming; otherwise the overshoot is shown (measured − upper, or lower − measured).
· Center offset = (measured mean − tolerance center) ÷ (T/2); the closer to 0 the better. A large absolute value means the machining center is off and the setup should be adjusted.
· Tolerance usage = (max − min) ÷ T; >80% means the process spread consumes most of the tolerance (high risk); Cp ≈ T ÷ 6s (s = sample std dev, rough estimate only — use the CpK tool for formal capability analysis).
· Upper deviation must be > lower deviation; enter 0 explicitly when an upper deviation is 0 (do not leave it blank).
About Dimension Tolerance Conformance Calculator
Judge pass/fail for dimensional measurements against tolerance limits with expanded measurement uncertainty, following the ISO 14253-1 decision rule.
Learn more about this tool →
GUM Measurement Uncertainty
Tolerance Interval
Repeatability & Reproducibility (ISO 5725)
Calibration Curve & Linearity
Process Capability (Cpk)
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