About this calculator
Part of our GD&T & Metrology Calculators collection. True position, fits, ISO tolerances, and surface roughness.
How it works
Calculates hole and shaft tolerances, clearance/interference range, and fit type for any ISO 286 fundamental deviation and tolerance grade combination.
Enter your values in the inputs above and click CALCULATE. Results appear on the right without a page reload. No login and no server upload.
Privacy and accuracy
Every calculation runs locally in your browser. Your design data never leaves your device. Results are intended for preliminary engineering work. Always verify critical designs with qualified review and applicable standards before production use.
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