249+ iOS apps curated and reviewed
Out of 249+ unit of measurement conversion apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (192K) | Yes | Yes | Aug 2026 |
| 2 |  | Free | 4.7★ (1.9K) | No | Yes | Aug 2026 |
| 3 |  | Free | 4.7★ (48K) | Yes | No | Aug 2026 |
| 4 |  | Free | 4.8★ (15K) | No | No | Aug 2026 |
| 5 |  | Free | 4.6★ (16K) | No | Yes | Aug 2026 |
| 6 |  | Free | — | No | No | May 2026 |
| 7 |  | Free | 4.6★ (13K) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.7★ (372) | Yes | No | Aug 2026 |
Easily convert between a wide range of units across 20 categories, including length, weight, temperature, and more. Features live currency updates for 155 world currencies, refreshed daily. Designed for simplicity and visual appeal.
Easily convert between 76 measurement units across eight common types, including length, weight, temperature, and volume. Features a built-in calculator and optional currency conversion with daily exchange rate updates.
Quickly convert between thousands of units with an intelligent search and autocomplete feature. This app offers a streamlined interface, an integrated calculator, and the ability to save favorite conversions. It supports over 6,400 units across 51 categories, making it a comprehensive tool for all your conversion needs.
This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.
This app offers a powerful and user-friendly unit converter with 16 categories, including currency, length, and temperature. It allows for custom unit lists and provides live exchange rate updates for 148 currencies. Unlock all features with a one-time in-app purchase.
Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.
Easily convert between various units of measurement for length, area, volume, weight, and more. Input values and instantly see results, simplifying daily calculations for work, homework, or household tasks.
Easily convert between hundreds of units across 43 categories, including currency with daily updated rates. Customize your workflow by hiding or reordering units and categories.
This utility app offers a straightforward and user-friendly interface for converting between various units. It's designed for ease of use, making unit conversions simple for everyday users.
This app offers a comprehensive unit conversion tool with over 300 units across 27 categories. It supports compound units, date calculations, and conversions between various number systems, including historical units. The interface is designed for ease of use with smart keyboards and customizable display options.
A beautifully designed unit converter with 24 categories and numerous units. Easily convert measurements from one unit to all others with a simple and intuitive interface. More units are planned for future updates.
Easily convert between over 75 units across 10 categories, with automatic calculations for all units simultaneously. Customize your list for quick access to frequently used conversions, including specialized options for cooking and imperial measurements. Enjoy a colorful, ad-free experience with offline functionality.