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Tolerance Analysis Calculator

A free shareable tool for worst case and root sum squared tolerance analysis for mechanical design. How to use this calculator?

Inputs: Dimesions and bilateral tolerances in stackup

NameNominal dimension± tolerance
Delete
Delete
Delete
Delete

Inputs: Design targets for assembly dimension

Target min dimension for stackupTarget max dimension for stackup

Outputs: Stackup plot with worst case & root sum squared (RSS) tolerances

0.0010 0.0220 #1 clevis mount gap 1.1360 ± 0.0060 , #2 washer thickness -0.0625 ± 0.0050 , #3 rod end bearing thickness -0.6250 ± 0.0020 , #4 spacer width -0.4375 ± 0.0030 Average assembly dimension 0.0110 Worse case tolerance -0.0050 0.0270 RSS tolerance 0.0024 0.0196

Outputs: Dimension analysis with worst case and RSS tolerance failure rates

DimensionNominalToleranceStd. DeviationVariance
#1 clevis mount gap1.1360± 0.00600.0020 0.00000400
#2 washer thickness-0.0625± 0.00500.0017 0.00000278
#3 rod end bearing thickness-0.6250± 0.00200.0007 0.00000044
#4 spacer width-0.4375± 0.00300.0010 0.00000100
Worst case stackup0.0110± 0.01600.0053 0.00002844
RSS stackup0.0110± 0.00860.0029 0.00000822
0.02% left tail failures0.01% right tail failures

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