# iUnit Measurement Conversion — 1650 units in 57 categories

> Comprehensive unit conversion tool with 1650 units in 57 categories. (iPhone/iPad app by Black Cat Systems.)

- Source: https://appshunter.io/ios/app/iunit-measurement-conversion/id305448108 (this page in markdown: same URL + `.md`)
- Developer: [Black Cat Systems](https://appshunter.io/developer/301047032)
- Category: Reference, Utilities
- Price: $2.99
- Rating: 3.70/5 from 6 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 2 MB
- Languages: American English
- Released: 2009-02-20
- Data updated: 2026-08-12
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/iunit-measurement-conversion/id305448108/reviews.md

## What is iUnit Measurement Conversion?

iUnit is a powerful yet easy to use unit conversion app. You can convert between 1650 different units in 57 categories quickly and easily. 

iUnit converts between the following types of units:

Acceleration
Acoustic impedance
Angle
Angular Acceleration
Area
Basis Weight
Capacitance
Charge (Electrical)
Computer Storage
Concentration
Conductance (Electrical)
Corrosion Rate
Data Transfer Rate
Density
Diffusitivity
Distance
Electrical Conductance
Energy
Enthalpy - mass basis
Enthalpy - mol basis
Enthalpy - volume basis
Entropy
Frequency
Force
Heat Capacity
Heat Flux
Heat Rate
Heat Transfer Coefficient
Liquid Solution Concentration
Luminous Luminence
Luminous Intensity
Magnetic Flux
Magnetic Flux Density
Magnetic Field Strength
Mass
Mass Flow Rate
Molar Concentration
Mole Flow Rate
Moment-Torque
Momentum
Power
Pressure
Radiation Activity
Stress
Surface Tension
Temperature
Thermal Conductivity
Thermal expansion - linear
Thermal expansion - volume
Time
Type (printer's)
Velocity
Viscosity (Kinematic)
Viscosity (Dynamic)
Viscosity (Oil and Water)
Volume
Volume Flow Rate

## Key features

- 1650 units conversion
- 57 categories
- Easy to use interface
- Quick conversions
- Supports iPhone, iPad, iPod

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/iunit-measurement-conversion/id305448108/reviews.md

### 5/5 — Best unit converter made

*2010-05-27*

I have been using iUnit on my Mac for a long time I was ecstatic today when I found it for my iPhone. It has virtually every unit of measure one could possibly need, and many many more.

## Frequently asked questions about iUnit Measurement Conversion

### What units can iUnit convert?

iUnit can convert between 1650 different units, covering 57 categories such as acceleration, area, distance, mass, temperature, and volume.

### How many categories does iUnit support?

iUnit supports conversions across 57 distinct categories, offering a comprehensive solution for a wide array of measurement needs.

### What devices is iUnit available on?

iUnit is available for iPhone, iPad, and iPod devices, providing a consistent experience across Apple's mobile ecosystem.

### How much does iUnit cost?

iUnit is a paid application, priced at $2.99, offering a one-time purchase for full access to its features.

### What is the age rating for iUnit?

iUnit has an age rating of 4+, making it suitable for a broad audience of users.

### When was iUnit last updated?

The latest version of iUnit, 3.0, was last updated on July 28, 2025, indicating recent development and maintenance.

### What is the user rating for iUnit?

iUnit has an average rating of 3.7 stars based on 6 user reviews, suggesting a generally positive but mixed user reception.

### Does iUnit have ads?

No, iUnit does not contain advertisements, providing an uninterrupted user experience.

## Version history (last 5 releases)

### 3.0 — 2025-07-28

Bug fixes and performance improvements.

### 2.0 — 2022-06-07

Updates for new iOS version.

### 1.2 — 2017-09-27

Updates for iOS 11.

### 1.1 — 2014-12-29

Updates for iOS 8.

### 1.0.0 — 2009-02-20

No release notes.

## Apps similar to iUnit Measurement Conversion

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Converter-Calculator](https://appshunter.io/ios/app/converter-calculator/id513419019) | 5.0 (3) | $2.99 | Reference |
| [myConvert Lite](https://appshunter.io/ios/app/myconvert-lite/id324520054) | 4.0 (4) | Free | Reference |

## More apps by Black Cat Systems

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All apps by Black Cat Systems: https://appshunter.io/developer/301047032

## Related topics

[iunit measurement conversion](https://appshunter.io/ios/topics/iunit-measurement-conversion) · [1650e](https://appshunter.io/ios/topics/1650e) · [1650](https://appshunter.io/ios/topics/1650)

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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 2026-08-12.*