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Best Gram Converter Apps

226+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated May 2026

Every iPhone needs a few good gram converter apps. We benchmark 226+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Gram Converter

Unit Converter - Best Unit App#1

Unit Converter - Best Unit App by Alan Mrvica

Convert All Units and Currency
Editor's Choice
✈️ Travel
4.8😊(172K ratings)
FreeAdsIn-App Purchases
Unit Converter - Best Unit App screenshot 1
Unit Converter - Best Unit App screenshot 2
Unit Converter - Best Unit App screenshot 3
Unit Converter - Best Unit App screenshot 4
Unit Converter - Best Unit App screenshot 5
Unit Converter - Best Unit App screenshot 6

A free unit converter app optimized for iPhone and iPad, featuring 12 categories for converting various units including area, currency, data, length, and more. Includes daily currency updates for 155 world currencies and is designed for easy use. Download now for quick and accurate unit conversions.

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive conversions
  • 💡 Useful for travel and cooking
  • 🚀 Quick and efficient

Room to Improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions
Convert Any Unit Lite#2

Convert Any Unit Lite by Cider Software LLC

Units & Currency Converter
Strong Contender
✈️ Travel
4.7😊(47K ratings)
FreeAds
Convert Any Unit Lite screenshot 1
Convert Any Unit Lite screenshot 2
Convert Any Unit Lite screenshot 3
Convert Any Unit Lite screenshot 4
Convert Any Unit Lite screenshot 5

Convert Any Unit Lite is a versatile app that simplifies unit conversions for users, offering a wide range of conversion options. Easily switch between various units for length, weight, volume, and more with a user-friendly interface. Download now to streamline your conversion needs.

What We Love

  • 👍 Easy to use
  • 🚀 Comprehensive unit conversions
  • 💡 Allows custom unit creation
  • 🔧 Useful for cooking, travel, and work

Room to Improve

  • 🔍 Too many unit options can be overwhelming
  • 🔍 Ads can be intrusive and disrupt usage
  • 🐛 Occasional bugs and freezing issues
Conversion Calculator !#3

Conversion Calculator ! by oWorld Software

Currency, Temperature, Length
Worth Considering
📊 Productivity
4.6😐(13K ratings)
FreeAdsIn-App Purchases
Conversion Calculator ! screenshot 1
Conversion Calculator ! screenshot 2
Conversion Calculator ! screenshot 3
Conversion Calculator ! screenshot 4
Conversion Calculator ! screenshot 5
Conversion Calculator ! screenshot 6

Easily convert units of measurement with this user-friendly app. Say goodbye to complex calculations and simplify your unit conversions today!

What We Love

  • 🚀 Easy to use
  • 🚀 Comprehensive unit conversions
  • 👍 Helpful app
  • 👍 Practical for engineering and mechanics

Room to Improve

  • 🔍 Too many ads
  • 🔍 Ads make the app unusable
  • 🔍 Ads are invasive and disrupt user experience

More Gram Converter apps to explore

4
Unit Converter - Pro Units App
Unit Converter - Pro Units App
Unit Converter - Pro Units App
Convert Any Unit
Free

A versatile conversion calculator app that effortlessly converts various units like length, weight, volume, and more. Simplify your conversions with ease by downloading the app now!

🔍 Reference
(16K)
5
GlobeConvert Currency & Units
GlobeConvert Currency & Units
GlobeConvert Currency & Units
Convert Currency and Units
Free

Convert currencies quickly and easily with this user-friendly app. Access up-to-date exchange rates and make conversions on the go. Experience convenience at your fingertips. Try it now!

🔧 Utilities
(79K)
6
Units Plus Converter
Units Plus Converter
Units Plus Converter
Convert Any Unit & Currency
$19.99

Units Plus Converter is a versatile application capable of converting any unit of measurement into another. From length and weight to temperature and currency, this app provides a comprehensive tool for all your conversion needs. Download now for hassle-free unit conversions.

🔧 Utilities
(8.3K)
7
My Currency Converter & Rates
My Currency Converter & Rates
My Currency Converter & Rates
Exchange Rates & Converter
Free

This currency conversion app allows users to instantly convert between different currencies with up-to-date exchange rates. Simply input the amount and select the currencies to get a quick conversion result. Try it now to effortlessly manage your international transactions!

✈️ Travel
(123K)
8
Fancy Units Converter
Fancy Units Converter
Fancy Units Converter
Currency and Unit Converter
Free

"Easily convert currencies and units with this user-friendly app for quick and hassle-free calculations. Simplify your conversions now!"

🔧 Utilities
(1.6K)
9
Units - Pro Unit Converter
Units - Pro Unit Converter
Units - Pro Unit Converter
by Homegrown Software Ltd
Free

This free app is a versatile unit converter with the ability to convert hundreds of units across various categories, including currency. Users can customize their conversion workflow by hiding unused units and reordering categories. The app is available on iPhones, iPod touches, and iPads.

🔧 Utilities
(150)
10
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Metric Conversion Calculator +
Free

Experience quick and easy unit conversions with a free, fast, and elegant calculator tool from Mila's Tools. Convert various units such as Area, Bits, Bytes, Length, Temperature, and more effortlessly. Try it out now for hassle-free conversions!

🔧 Utilities
(1.3K)
11
Ounces To Grams – Weight Converter (oz to g)
Ounces To Grams – Weight Converter (oz to g)
Ounces To Grams – Weight Converter (oz to g)
by Armchair Engineering
$0.99

This application allows users to quickly and easily convert between ounces and grams. It also enables users to select their preferred number of decimal places for accurate conversions.

🔧 Utilities
(6)
12
Conversion Calculator Plus
Conversion Calculator Plus
Conversion Calculator Plus
Unit Converter
Free

"Explore the ultimate Unit Converter tool with Conversion Calculator Plus – your go-to Swiss army knife for effortless unit conversions. Simplify complex calculations and streamline your work effortlessly."

📊 Productivity
(15K)
13
Unit Converter HD.
Unit Converter HD.
Unit Converter HD.
30 categories, 700+ units
Free

Discover a powerful unit converter app with 30 categories and over 700 units of measure. Make conversions easily across various categories and save time with this user-friendly tool.

🔧 Utilities
(642)
14
Unit Converter Calculator Pro
Unit Converter Calculator Pro
Unit Converter Calculator Pro
Simple With Metric & Imperial
Free

This application is a user-friendly tool for swiftly converting units across various metrics, making calculations hassle-free. Try it now for effortless unit conversions on-the-go.

🔧 Utilities
(916)
15
Weicon - Weight Unit Converter
Weicon - Weight Unit Converter
Weicon - Weight Unit Converter
Convert weight across multi...
Free
🔧 Utilities
(0)
16
Metric Conversion tool
Metric Conversion tool
Metric Conversion tool
Unit and currency converter
Free

A must-have unit conversion app with over 30,000 conversions, 160 currencies, and detailed historical records. Easily convert weights, temperatures, lengths, areas, volumes, time, angles, and more. Access nine significant digits and fractional results.

🔍 Reference
(15K)
17
Weight Converter for lb,kg,g
Weight Converter for lb,kg,g
Weight Converter for lb,kg,g
For Pounds, Kilograms, Grams
Free

This handy application allows users to easily convert between Pounds, Kilograms, and Grams, making it a convenient tool for travelers and others who need quick weight conversions. Download now and get instant access to accurate conversions on the go!

✈️ Travel
(8)
18
Convertible: Unit Converter
Convertible: Unit Converter
Convertible: Unit Converter
Currency and Unit Converter
Free

This application is a comprehensive unit converter that allows users to easily convert between various units of measurement, including standard and non-standard units, across multiple categories such as length, mass, area, and more. With its elegant interface, customizable themes, and unique features like fraction input and output, it helps users visualize and understand complex conversions in a fun and educational way, try it now!

🔧 Utilities
(97)
19
Currency Foreign Exchange Rate
Currency Foreign Exchange Rate
Currency Foreign Exchange Rate
Unit Converter & Calculator $€
Free

Convert currencies with ease using this comprehensive foreign exchange rate application. Simply enter the amount and select the currencies to see real-time conversion rates. Start converting now!

💰 Finance
(10K)
20
Converter: Units & Currencies
Converter: Units & Currencies
Converter: Units & Currencies
by DROXIC OOD
Free

Convert various units quickly and easily with this user-friendly app. Input your values and select the type of conversion you need – whether it's length, weight, volume, or more – and get instant results. Streamline your daily tasks with this efficient tool today!

🔧 Utilities
(761)

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