1. Home
  2. ✈️ Travel
  3. Unit Converter
Unit Converter - Convert all

Unit Converter - Convert all

Measurements & Calculations

14K ratings
1063 reviews
With Ads
🔧 Utilities
✈️ Travel
Free
In-App PurchasesWith Ads

Details

Released
February 21, 2011
Updated
November 13, 2026

Features

Developer

oWorld Software
✨Promote your app ✨
Unit Converter - Convert all screenshot #1 for iPhone
Unit Converter - Convert all screenshot #2 for iPhone
Unit Converter - Convert all screenshot #3 for iPhone
Unit Converter - Convert all screenshot #4 for iPhone
Unit Converter - Convert all screenshot #5 for iPhone
Unit Converter - Convert all screenshot #6 for iPhone
Unit Converter - Convert all screenshot #7 for iPhone
Unit Converter - Convert all screenshot #8 for iPhone
Unit Converter - Convert all screenshot #9 for iPhone
iphone
iphoneDuo
ipad
watch
🧾$0.99 - $29.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
⭐1.1K
Reviews↘︎
📝40+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
🎪2 happening
Events↘︎
❓5 answered
FAQ↘︎
📦~ in 6 days
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

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.

✓Real-time currency conversions
✓Extensive unit categories (weight, temp, length, volume, etc.)
✓Simple and intuitive interface
✓Supports international currencies
✓Includes time, speed, and IT units
✓Unlockable premium units
Show original description

What users say about Unit Converter

Reviews of Unit Converter are mixed: the Travel app is rated 4.6/5 from 14K App Store ratings. What users like most: easy to use, comprehensive unit conversions. Top complaints: too many ads, ads make the app unusable. Summarized from real user reviews.

Positive things

  • 🚀Easy to use
  • 🚀Comprehensive unit conversions
  • 👍Helpful app
  • 👍Practical for engineering and mechanics
  • 👍Intuitive interface
  • 👍Extremely useful
  • 👍Convenient and always available

Negative things

  • 🔍Too many ads
  • 🔍Ads make the app unusable
  • 🔍Ads are invasive and disrupt user experience
  • 💰Expensive subscription for ad-free version
  • 🐛Crashes and stability issues
  • 🔍Ads block access to features
See all reviews
+1

What's New in Unit Converter

3.0.31

November 13, 2026

What's new • Redesigned first steps: find your first conversion in one tap. • New card on the home screen to make the app your own converter: favorites, categories, widget. • Pick up your last conversion right from the home screen. • Clothing sizes: new UK column and charts aligned with international conventions. • Shoe sizes: inches, Japan, Mexico and Brazil women columns. • Printable conversion charts, from Settings. Improvements • Easier-to-read screens, in light and dark mode. • Clearer widget, inches in sixteenths. • Fixed unit labels (mph, km/h, knots…) and completed Chinese translations.

More
12

Subscriptions & In-App Purchases

Get premium

No ads, all conversions and future updates.

$14.991 Year
7 Days trial
Price Updates
November 13, 2026→$14.99
June 26, 2026→$5.99
June 22, 2026→$9.99
June 19, 2026→$9.99
How to cancel Unit Converter subscription ⁉️

Events

Read more about Holiday baking: cups to grams
HappeningSpecial Event

Holiday baking: cups to grams

Flour, butter, sugar: cups to grams in one tap

Nov 16, 2026 — Nov 30, 2026

Read More

Read more about Thanksgiving Turkey Planner
HappeningSpecial Event

Thanksgiving Turkey Planner

Turkey roasting time and temps, in one tap

Nov 12, 2026 — Nov 28, 2026

Read More

See All

User reviews

Most RecentHighest RatedLowest Rated

Great App

This is so easy to use and the variety of conversions is great.
WEWot Eva

Fabuloso

Esta App; es muy importante tenerla, me ayuda en la conversión de medidas inglesas al sistema métrico decimal.
5555rriente

My go to for various conversions

This is the best convertor app
I have found!
AAJA151

Super App

Does so many different measurements
SESam Emms

Great app

It’s a great app, the only problem with it is that you can’t type in a fraction of an inch to get a decimal, and you have to pay for the less used conversions (but you don’t use those very often).
GGrhffsfjibxskbvf
See 1058 more reviews

Developer apps

Animal sounds - Images
Animal sounds - Images

Noises & Photos

🎬 Entertainment

(654)

Free
In-App PurchasesWith Ads
Firearm simulator : sounds, noises and images, photos FREE
Firearm simulator : sounds, noises and images, photos FREE

by oWorld Software

🎬 Entertainment

(5)

Free
In-App Purchases
Quiz animal: Calls of the wild
Quiz animal: Calls of the wild

by oWorld Software

🎬 Entertainment

(3)

Free
Don't push the red button: the famous game! You won't be able to stop !
Don't push the red button: the famous game! You won't be able to stop !

by oWorld Software

🎬 Entertainment

(108)

Free
Money converter - Currency
Money converter - Currency

Convert exchange rates

✈️ Travel

(2.5K)

Free
In-App PurchasesWith Ads
See developer apps

User experience

🐞

Reported Bugs

3 issues

Conversion calculations are sometimes inaccurate

Bug

Inability to enter decimal values in some conversions

Bug

Compatibility issues with newer devices

Bug
✨

Requested Features

4 requests

Dark mode option

Feature

Favorites/frequently used units

Feature

Improved ad-supported free version

Feature

More customization options

Feature

FAQ

What does the Conversion Calculator app do?

This app functions as a comprehensive unit and currency converter. It allows users to easily convert between various units of weight, temperature, length, volume, time, speed, and more. It also provides real-time currency exchange rates for international currencies.

What are the key features of this conversion app?

Key features include real-time currency conversions with live exchange rates, a wide array of unit categories such as weight, temperature, length, and volume, and an intuitive interface for quick conversions. It also supports specialized units for IT, energy, and fuel consumption.

How much does the Conversion Calculator app cost?

The app is free to download and use, with ads displayed. Users can opt for 'Converter Premium' via an auto-renewable subscription to remove ads and unlock additional units. Subscription options include a 1-year renewal for $9.99 (with a 7-day free trial) or a 1-month renewal for $0.99.

What types of units can be converted?

The app supports a vast range of units including weight (ounces, pounds, kilograms), temperature (Celsius, Fahrenheit, Kelvin), length (miles, kilometers, feet, meters), volume (liters, gallons, cups), time, speed, computer memory, energy, fuel consumption, and electricity. It also includes currency conversions for major global currencies and cryptocurrencies.

Who would benefit from using this app?

This app is ideal for cooks, contractors, DIY enthusiasts, travelers, students, and anyone who frequently needs to convert measurements or currencies. Its ease of use and comprehensive conversion options make it a valuable tool for everyday tasks and international dealings.