Fits and Tolerances

Fits & Tolerances is a practical engineering tool for looking up dimensional tolerances and calculating mechanical fits according to ISO 286-2. KEY FEATURES • Look up standard hole and shaft tolerances for nominal sizes up to 3,150 mm. • View upper and lower deviations, tolerance values, and resulting limit dimensions. • Calculate complete hole-basis and shaft-basis fits. • Determine maximum and minimum clearance or interference. • Identify clearance, transition, and interference fits. • Explore commonly used fit recommendations and their typical applications. • Quickly revisit the 10 most recent tolerance lookups and the 10 most recent fit calculations. • Expand history entries to review complete calculation details. • Perform core calculations directly on your device. DESIGNED FOR • Mechanical engineers • Manufacturing and machining professionals • Technical students and instructors • Designers working with shafts, holes, and precision assemblies The app provides a clear and convenient reference for engineering calculations. Results should be verified against the applicable technical requirements before being used for critical manufacturing or inspection decisions. Advertising helps keep the app available free of charge.