This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.
ISO Tolerance
Replace your handbooks with instant ISO 286 and 2768 calculations. The essential tool for machinists, engineers, and inspectors to get accurate limits and fits in seconds.
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2Latest Version
3.0Size
2.5 MBFirst Released
Jan 14, 2012Engineered for Precision, Built for the Shop Floor
Replace your grease-stained manuals with a powerful digital multi-tool. Get instant, error-free ISO 286 and 2768 tolerances for every job.
Lightning-Fast Lookups
Access ISO 286 hole and shaft grades from A to ZC in seconds—no flipping through 2,000-page handbooks required.
Metric & Imperial Flexibility
Calculates dimensions up to 500mm or 19.685 inches, ensuring accuracy whether you are working on domestic or international designs.
Frequently Asked Questions
Everything you need to know about ISO Tolerance
What is the ISO Tolerance app?
The ISO Tolerance app provides ISO Hole Basis Tolerance charts on iPhone. It calculates upper and lower tolerances for holes and shafts based on ISO 286, using user-entered nominal diameters and selected tolerance grades.
How does the ISO Tolerance app calculate tolerances?
The ISO Tolerance app calculates tolerances by allowing users to input a nominal diameter for a hole or shaft and select a tolerance grade. It then reveals the corresponding upper and lower tolerances based on the ISO 286 standard.
What ISO standards does the ISO Tolerance app support?
The ISO Tolerance app supports calculations based on ISO 286 for hole and shaft tolerances. It also includes additional functionality for ISO 2768 tolerances, as defined in table 1 and table 2.
What is the nominal diameter range for metric calculations in the ISO Tolerance app?
The ISO Tolerance app calculates tolerances for nominal diameters between 0 and 500 mm in metric mode. This range applies to both hole and shaft basis calculations.
Can the ISO Tolerance app perform calculations in imperial mode?
Yes, the ISO Tolerance app can perform calculations in imperial mode. It calculates tolerances for nominal diameters between 0 and 19.685 inches when imperial mode is selected.
What types of tolerance grades does the ISO Tolerance app use?
The ISO Tolerance app uses tolerance grades ranging from "A" to "ZC" for holes and "a" to "zc" for shafts. Users select these grades to determine upper and lower tolerance limits.
Does the ISO Tolerance app include a limits and fits calculator?
Yes, the ISO Tolerance app contains a limits and fits calculator. This feature allows users to determine if a combination of tolerances results in clearance, transition, or interference fits.
What ISO 2768 tolerances are available in the ISO Tolerance app?
The ISO Tolerance app supports ISO 2768 tolerances for Linear dimensions, Chamfers and Radii, Angles, Straightness, Flatness, Perpendicularity, Symmetry, and run out. These are defined in table 1 and table 2.
Who is the ISO Tolerance app designed for?
The ISO Tolerance app is ideal for CNC Machinists, Manual Machinists, Inspectors, Designers, Draughtsmen, and Students. It provides convenient access to tolerance information without physical charts or books.
The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.
App Store
Screenshots
ISO Hole Basis calculation screen on mobile showing metric units and grade selector
ISO Tolerance app Hole Basis calculator interface displaying upper and lower limits in metric units.
Interface of the ISO Tolerance app showing the Shaft Basis screen for calculating engineering fit limits.
ISO Tolerance app interface showing shaft basis limit calculations in metric units for mechanical engineering.
ISO Fits calculator screen showing tolerance limits and clearance values for mechanical engineering
ISO Tolerance app interface showing limits and fits calculation for hole and shaft dimensions
ISO 2768 tolerance calculator screen showing grade selector and metric imperial units
ISO 2768 tolerance calculator screen showing metric upper and lower limits for a nominal value.
Description
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This page is not an official page of the app or its developer, but an independent editorial publication created for informational and commentary purposes. Unless expressly stated otherwise, neither the app nor its developer is affiliated with, endorsed by, sponsored by, authorized by, or otherwise officially connected with MWM, Apple, Google Play, the app publisher, or the app's developer, and nothing on this page implies that the app was developed using MWM's services. Any trademarks, logos, screenshots, and other content remain the property of their respective owners.