191+ iOS apps curated and reviewed
The best temperature converter classic apps on iPhone average 4.6★ across 191+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (369) | No | No | Jul 2026 |
| 2 |  | Free | 4.7★ (47K) | Yes | No | Jul 2026 |
| 3 |  | $9.99 | 4.8★ (5.1K) | No | No | Jul 2026 |
| 4 |  | Free | 4.8★ (1.4K) | Yes | Yes | Jul 2026 |
| 5 |  | Free | 4.8★ (6.3K) | No | Yes | Jul 2026 |
| 6 |  | $9.99 was $29.99 | 4.7★ (842) | No | No | Jul 2026 |
| 7 |  | Free | 4.8★ (97) | No | No | Jul 2026 |
| 8 |  | Free | 4.6★ (93) | No | No | Jul 2026 |
Effortlessly convert temperatures between Celsius, Fahrenheit, and Kelvin. This utility app provides a straightforward interface for quick and accurate conversions.
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 fast and intuitive way to convert between thousands of units and currencies. Simply type to search and select units, with automatic category detection and intelligent suggestions. It includes advanced features like a built-in calculator and bookmark organization.
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 temperatures between Celsius, Fahrenheit, and Kelvin with a clean and intuitive interface. This utility app offers quick and accurate conversions for everyday use. Ads are present but can be removed via a one-time purchase.
Effortlessly convert between hundreds of units across 26 essential categories with this precision calculator. Designed for speed and simplicity, it offers accurate results in seconds for students, professionals, and travelers alike. Enjoy offline functionality and a customizable experience.
This app offers a comprehensive unit and currency conversion tool with a visually appealing interface and extensive unit options. It supports standard and non-standard units, compound conversions, and fraction input, making it versatile for various needs.
Effortlessly convert temperatures between various scales. Select your starting unit, input the temperature, and get instant results. Supports common and scientific units for comprehensive conversion needs.
Easily convert and track time across multiple time zones with a convenient widget. Access it from anywhere, even when your phone is locked, to quickly see and adjust to different time zones.
This app provides a powerful and intuitive way to convert between a wide range of units, including length, weight, temperature, and more. It offers simultaneous conversion of multiple units and customizable options for a personalized experience. Get instant, accurate results 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.
This utility app offers a straightforward way to convert between multiple temperature units simultaneously. It features a dedicated numeric keyboard with support for negative numbers and decimals, ensuring quick and accurate conversions for various scientific and travel needs.
Easily convert temperatures between Fahrenheit and Celsius. Access current, historical, and forecasted weather data for any city in both units simultaneously.
This app offers a fast and user-friendly way to convert units and currencies. Customize your conversion lists and get instant results as you type, with support for over 350 units and 160 currencies. It also includes a built-in calculator and offline currency data.
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.
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.
Convert currencies and units quickly and efficiently on a single screen. This free version offers essential conversion tools with a built-in calculator and natural language search. Upgrade to the full version for expanded unit options and an ad-free experience.
Easily convert temperatures between Celsius, Fahrenheit, and Kelvin. This utility is ideal for travel, cooking, scientific applications, or daily 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 over 700 units across 30 categories with this powerful tool. It offers a user-friendly interface, dark mode support, and a backspace key for quick corrections. Save time on all your measurement conversion needs.