# Fit Tolerance ISO — Fits and Tolerances Calculator

> Engineering tolerance calculator for fits and limits based on ISO and ANSI standards. (iPhone/iPad app by Yasar Yucel Yesilbag.)

- Source: https://appshunter.io/ios/app/fit-tolerance-iso/id1251895012 (this page in markdown: same URL + `.md`)
- Developer: [Yasar Yucel Yesilbag](https://appshunter.io/developer/1251895011)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 51 MB
- Released: 2017-06-29
- Data updated: 2026-08-27
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/fit-tolerance-iso/id1251895012/reviews.md

## What is Fit Tolerance ISO?

Limits, fits and tolerances calculator has been developed to calculate engineering tolerances of inner and outer features of journal bearings, linear bearings, thrust bearings, bushings, ball bearings, roller bearings, housings, cylinder bores, drilled holes, linear and precision shafts, pistons, etc.

The calculator works in line with ISO 286-1 (2010), ISO 286-2 (2010) and ANSI B4.2 (1978) standards which are based on metric units. According to the input parameters of nominal size and hole/shaft tolerances, size limits and deviations for hole/shaft are calculated and fit type is selected among the clearance, transition and interference fits.

The schematic representation of the fit is also drawn. The preferred tolerances and fits advised by ISO and ANSI standards can be found in the "Supplements" section.

## Key features

- Calculates engineering tolerances
- Supports ISO and ANSI standards
- Determines clearance, transition, and interference fits
- Provides schematic fit representations
- Includes preferred tolerances and fits
- Works with metric units


## Frequently asked questions about Fit Tolerance ISO

### 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.

## Version history (last 5 releases)

### 3.0 — 2026-01-15

On screen keyboard for nominal size is now a numpad with a decimal separator.
Minor updates and improvements.

### 2.2 — 2025-12-15

On screen keyboard for nominal size switched to alphanumeric to enable user to input decimal separator.

### 2.1 — 2025-12-02

UI is modernized.
Minor updates and improvements.

### 1.7 — 2023-11-01

Bug fixes and performance improvements.

### 1.5 — 2022-05-09

Bug fixes and performance improvements.

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## More apps by Yasar Yucel Yesilbag

- [Fit Tolerance ANSI](https://appshunter.io/ios/app/fit-tolerance-ansi/id1294112198)
- [Fit Tolerance ISO Pro](https://appshunter.io/ios/app/fit-tolerance-iso-pro/id1397159146)
- [Bemazer](https://appshunter.io/ios/app/bemazer/id1454370304)
- [Brick Miner](https://appshunter.io/ios/app/brick-miner/id1516095657)

All apps by Yasar Yucel Yesilbag: https://appshunter.io/developer/1251895011

## Related topics

[elnath fit](https://appshunter.io/ios/topics/elnath-fit)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*