# Turnit: Convert Everything — Convert Units & Learn

> Scientific unit converter with custom options, offline functionality, and detailed calculations. (iPhone/iPad app by Stanislav Jidkov.)

- Source: https://appshunter.io/ios/app/turnit-convert-everything/id1484892103 (this page in markdown: same URL + `.md`)
- Developer: [Stanislav Jidkov](https://appshunter.io/developer/1484892102)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.2 · 44 MB
- Languages: English
- Released: 2019-12-08
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/turnit-convert-everything/id1484892103/reviews.md

## What is Turnit?

Turnit: Convert Everything, is a powerful, easy to use, customizable scientific unit converter.  Massive library with over 2600 units across 70+ categories means with Turnit you can convert pretty much everything.  Create your own converters to do the conversions you need quickly and easily.   Create your own units.  Learn about each unit and what it measures through detailed descriptions.  Learn how conversions happen by seeing the calculations behind them.  Turnit: Convert Units and Learn is fast and accurate with significant digit control.  

Features:
-2600+ units across 70+ categories of measurement, each with description.
-Create custom converters and units.
-Fast, accurate, math engine with significant digits
-See how each answer is obtained.
-History section for review and reference.
-Works completely offline.  Does not collect data.
-Search, sort, filter options

Conversion Categories:
-Acceleration
-Acceleration - Angular
-Angle
-Area
-Charge
-Concentration - Molar
-Concentration - Solution
-Current
-Data Bitrate
-Data Storage
-Density
-Elastance
-Electric Conductance
-Electric Conductivity
-Electric Field Strength
-Electric Potential
-Electric Resistance
-Electric Resistivity
-Electrostatic Capacitance
-Energy
-Energy Density
-Fire Load Density
-Flow
-Flow - Mass
-Flow - Molar
-Force
-Frequency Wavelength
-Fuel Economy
-Heat Flux
-Heat Transfer
-Illumination
-Inductance
-Length
-Linear Charge Density
-Linear Current Density
-Luminance
-Luminous Intensity
-Magnetic Field Strength
-Magnetic Flux
-Magnetic Flux Density
-Magnetomotive Force
-Mass
-Mass Flux Density
-Moisture Vapor Transmission
-Moment of Force
-Moment of Inertia
-Numbers
-Permeability
-Power
-Pressure
-Radiation
-Radiation - Absorbed Dose
-Radiation - Activity
-Radiation - Exposure
-Sound Level
-Specific Energy
-Specific Heat Capacity
-Specific Volume
-Speed
-Surface Charge Density
-Surface Current Density
-Surface Tension
-Temperature
-Thermal Conductivity
-Thermal Expansion
-Thermal Resistance
-Time
-Torque
-Velocity - Angular
-Viscosity - Dynamic
-Viscosity - Kinematic
-Volume
-Volume Charge Density

## Key features

- 2600+ units across 70+ categories
- Create custom converters and units
- View calculation details
- Works completely offline
- History section for review
- Significant digit control

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Donation | $0.49 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Small Donation | $0.99 | one-time |
| Large Donation | $2.99 | one-time |
| Medium Donation | $1.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/turnit-convert-everything/id1484892103/reviews.md

### 5/5 — So many units!

*2020-07-15, version 1.57*

Makes my life so much easier... 

Plus I like reading the info on the random types that I never heard about.

Mongolian units of measurement are crazy!!

### 5/5 — Great App

*2019-11-04, version 1.0*

Solid app that has everything you need right there! would recommend.

### 5/5 — Great App

*2019-11-02, version 1.0*

I love this app! Everything you need is right there! Would recommend this app.

### 5/5 — Extremely convenient!

*2019-10-31, version 1.0*

As a scientist, this is extremely convenient for field work and for instant conversion. A must have for any engineer - don't fear imperial to metric conversion any longer!

## Frequently asked questions about Turnit

### What units can Turnit convert?

Turnit boasts a massive library with over 2600 units spanning more than 70 categories of measurement. This includes common categories like length, mass, and volume, as well as more specialized scientific units.

### Can I create my own units in Turnit?

Yes, Turnit allows you to create your own custom converters and even define your own units. This feature provides flexibility for specialized conversion needs not covered by the standard library.

### Does Turnit work offline?

Turnit is designed to work completely offline, meaning you do not need an internet connection to perform conversions. The app also states that it does not collect user data.

### How does Turnit show calculations?

Turnit provides detailed descriptions for each unit and allows users to see the calculations behind each conversion. This helps users understand how the results are obtained.

### What is the pricing for Turnit?

Turnit is available for free. While the app itself is free, there is a 'Monthly Donation' option for $0.49/P1M, indicating a freemium model where users can optionally contribute financially.

### What is the age rating for Turnit?

Turnit has an age rating of 4+, making it suitable for a wide range of users, including children and adults. This indicates it contains no mature content.

### How often is Turnit updated?

The latest version of Turnit is 1.571, which was last updated on December 5, 2020. This suggests a moderate update frequency for the application.

### What devices does Turnit support?

Turnit is available for iPhone and iPod devices. It is designed for iOS users looking for a robust unit conversion tool.

## Version history (last 4 releases)

### 1.571 — 2020-12-05

performance optimization
privacy policy update

### 1.57 — 2020-02-25

minor bug fixes and optimization.

### 1.56 — 2020-01-23

This version brings Turnit to everyone.  Enjoy the full version, add free, for free!!! 

--Also--
performance optimization
reworked assets
numerous bug fixes

### 1.0 — 2019-10-31

No release notes.

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## More apps by Stanislav Jidkov

- [Math Time](https://appshunter.io/ios/app/math-time/id1488237486)
- [Chlobo](https://appshunter.io/ios/app/chlobo/id1511640733)
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- [Melon Aid](https://appshunter.io/ios/app/melon-aid/id1549774132)

All apps by Stanislav Jidkov: https://appshunter.io/developer/1484892102

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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 2026-06-01.*