233+ iOS apps curated and reviewed
The best weight converter unit apps on iPhone average 4.2★ across 233+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (192K) | Yes | Yes | Aug 2026 |
| 2 |  | Free | 4.7★ (48K) | Yes | No | Aug 2026 |
| 3 |  | Free | 4.5★ (17) | — | No | Jul 2026 |
| 4 |  | Free | 3.6★ (8) | Yes | No | Jul 2026 |
| 5 |  | Free | 4.6★ (37) | Yes | Yes | Aug 2026 |
| 6 |  | $9.99 was $19.99 | 4.3★ (7) | No | No | Aug 2026 |
| 7 |  | Free | 4.3★ (210) | No | No | Jul 2026 |
| 8 |  | Free | 4.8★ (1.4K) | Yes | Yes | 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.
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 offers a straightforward way to convert common measurements across various categories like length, weight, and temperature. It features a clean interface for quick input and instant, readable results, with options to swap units and view conversion history.
Easily convert weights between pounds, kilograms, and grams. This free tool is optimized for iPhone and provides quick conversions for travelers needing handy information on the go.
This app offers a comprehensive solution for converting various weight and mass units. It supports metric, imperial, troy, and force units, along with compound combinations and custom precision settings. Designed for ease of use with features like favorites and dark mode.
Easily convert between a vast array of US, imperial, and metric units across multiple categories including length, area, volume, weight, and temperature. This comprehensive tool supports numerous specific units within each conversion type.
Easily convert between a wide range of units for length, area, mass, temperature, volume, and more. This app offers a comprehensive set of conversion tools for everyday and professional use.
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.
Easily convert between various weight units in real-time. This tool is designed for quick and hassle-free conversions, suitable for a wide range of users.
Easily convert between a vast array of units used globally. This utility app aims to support the most common units and plans to add more over time. It's designed for quick and accurate conversions.
Easily convert over 160 currencies and 350 physical units with real-time updates and offline capabilities. Create a favorites list for quick access to frequently used conversions and enjoy geo-based currency options. An ad-free version is available for purchase.
This utility app provides quick and easy conversions between various measurement units. It supports standard categories like length, area, volume, and weight, as well as specialized units for angle, speed, data storage, and currency for over 160 countries.
A straightforward unit converter designed for ease of use and efficiency. It offers a wide range of conversion options without any advertisements, saving battery and data. All conversions are performed on a single, intuitive screen.
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 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.
This application offers a professional and user-friendly interface for converting between various units. It supports over 300 units across more than 20 categories, including currency, temperature, and length.
This app offers a comprehensive unit conversion experience with a vast database of over 1000 units across 50 categories. It supports mixed units, custom unit creation, and provides a unique, visually appealing interface for all your conversion needs.
This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.
Easily convert between various units across different categories like clothing, area, weight, and volume. Customize decimal places for precise results. This tool offers a simple and intuitive interface for all your conversion needs.