Fit Tolerance ISO
Fits and Tolerances Calculator
About
Calculates engineering tolerances for various mechanical components based on ISO and ANSI standards. It determines size limits, deviations, and fit types for holes and shafts, offering schematic representations of fits.
What's New in Fit Tolerance ISO
3.0
January 15, 2026
On screen keyboard for nominal size is now a numpad with a decimal separator. Minor updates and improvements.
Developer apps
FAQ
What is Fit Tolerance ISO used for?
Fit Tolerance ISO is used to calculate engineering tolerances for inner and outer features of various mechanical components like bearings, shafts, and housings. It helps determine size limits, deviations, and the type of fit (clearance, transition, or interference).
Which standards does Fit Tolerance ISO follow?
Fit Tolerance ISO adheres to the ISO 286-1 (2010), ISO 286-2 (2010), and ANSI B4.2 (1978) standards, all of which are based on metric units.
Can Fit Tolerance ISO show how a fit looks?
Yes, Fit Tolerance ISO provides a schematic representation of the calculated fit, allowing users to visualize the relationship between the hole and shaft.
Does Fit Tolerance ISO offer guidance on standard fits?
The 'Supplements' section within Fit Tolerance ISO contains preferred tolerances and fits as advised by ISO and ANSI standards, offering users helpful recommendations.
What devices is Fit Tolerance ISO available on?
Fit Tolerance ISO is available on iPhone, iPad, and iPod devices, as indicated by its supported devices list.
How often is Fit Tolerance ISO updated?
The latest version of Fit Tolerance ISO is 3.0, and it was last updated on January 15, 2026. This indicates a recent update or a future planned update.
Does Fit Tolerance ISO have ads?
Yes, Fit Tolerance ISO contains advertisements. This is typical for free utility applications that offer their services without a direct purchase price.
What is the age rating for Fit Tolerance ISO?
Fit Tolerance ISO has an age rating of 4+, making it suitable for a wide range of users, including younger individuals who may be learning about engineering concepts.
