Unit Converter - Convert all

Name: Unit Converter - Convert all
Rating: 4.6 (13725 reviews)
Author: oWorld Software

Measurements & Calculations

Free · In‑App Purchases · Designed for iPad

14K Ratings
Age Rating

4+
Years
Category

Travel
Developer

oWorld Software
Language

EN
+ 8 More
Size

73
MB

Unit Converter: convert any measurement, currency or size in one tap. IN SHORT A fast, offline unit converter that turns any measurement, currency or clothing size into the answer you need — with live exchange rates and a built-in calculator. If you can use a calculator, you can use this. WHO IT'S FOR Cooks, contractors, DIY-ers, students, travelers and anyone who needs a quick, precise conversion. Also handy for engineers, nurses and online shoppers comparing international sizes. WHAT YOU GET • 18+ categories in one place — weight, length, temperature, volume, speed, area, time, data, energy and more. • Live currency conversion — real-time exchange rates, updated automatically. • A real calculator built in — type an expression and convert the result instantly. • Works offline — every unit (except live rates) converts with no connection. HOW IT WORKS 1) Pick a category from the icon grid. 2) Tap the two units you want and type a value — or a full calculation. 3) Read the precise result instantly, to the number of decimals you choose. KEY FEATURES • Currency — live forex rates for USD, EUR, GBP, JPY and more, plus crypto. • Weight & mass — oz, lb, kg, g, mg, stone, metric tons. • Length & distance — miles, km, yards, meters, feet, inches, cm, mm. • Temperature — Celsius, Fahrenheit, Kelvin, Réaumur, Rankine. • Volume — cups, tbsp, tsp, pints, gallons, liters and metric volumes. • Clothing & shoe sizes — men, women, kids and babies, across countries. • Plus speed, area, pressure, data, energy, fuel and angle. WHY IT HELPS Most people find the unit they need in a couple of taps and never open a second app. Rates stay current, so a EUR→USD check is accurate to the day. FAQ Q: What is it, in one line? A: A unit converter that turns any measurement, currency or size into a precise result using a built-in calculator. Q: Does it work without internet? A: Yes — all units convert offline. Only live currency rates need a connection to refresh. Q: Can it convert currencies in real time? A: Yes, exchange rates update automatically so conversions reflect the current market. DOWNLOAD AND CONVERT Pick a category and get your first conversion in seconds. Naturally, this app helps with unit conversion, the metric system, imperial units, currency exchange, cooking measurements and clothing sizes. Auto-renewable subscription: Unit Converter Premium - Full pack - 1-year renewal - USD 9.99 - available with a 7 days free trial - Full pack - 1-month renewal - USD 0.99 The total amount for the subscription period will be charged to your iTunes Account. Unless you turn it off auto-renewal at least 24 hours before the end of the subscription period, the subscription will renew automatically for the same price and will be charged on to your iTunes Account. You can manage the subscription and turn off automatic renewal in the account settings for your Apple ID at any time. Any used portion of a free trial period will be forfeited when subscribing to a non-trial plan. Please feel free to contact me if you have any questions: Olivier@oworld.co. Terms of service: https://termsfeed.com/terms-service/5c8b6678a74ea05ab5f671329b35ddc1 Privacy policy: https://www.iubenda.com/privacy-policy/25720446 Keep in mind that this application is constantly evolving. Got an idea for improvement? Can’t find a category? Please, send me an email to olivier@oworld.fr

Events

SPECIAL EVENT
Thanksgiving Turkey Planner

Enter your turkey weight or guest count: get the roasting time, oven and doneness temps, thawing and resting times.
SPECIAL EVENT
Holiday baking: cups to grams

Convert cups to grams and ounces for 16 baking staples: flour, butter, sugars, cocoa, oats, honey, milk and more.

Ratings & Reviews

4.6

out of 5

14K Ratings

convenient phone app.
04/26/2024
MSanders119
After downloading using a number of these phone apps for years, this one seems to be much then most. Anyway, I like to use the more technical portions of some of the apps, such as resistance, capacitance, and reluctance. Then we go from the dry to the wet! Liquid measurements can always be a little funky and never the same and a great many of the people that write these applications just can’t seem to get that right there’s always a problem and sometimes it cost money.Keep up the good work guys and dolls.
convenient phone app.
04/26/2024
MSanders119

After downloading using a number of these phone apps for years, this one seems to be much then most. Anyway, I like to use the more technical portions of some of the apps, such as resistance, capacitance, and reluctance. Then we go from the dry to the wet! Liquid measurements can always be a little funky and never the same and a great many of the people that write these applications just can’t seem to get that right there’s always a problem and sometimes it cost money.Keep up the good work guys and dolls.
A must have!
12/19/2025
corkalu
There are only two apps on my phone which I am willing to pay for an annual subscription. This is the most useful tool & is done so well. I use it while cooking, traveling (money conversion!), buying items that are described with metric dimensions, measuring for projects, etc. There is absolutely no reason to struggle with doing conversions by any other methods when this is the only thing anyone needs. It’s a global life in every way; be prepared with this app.
A must have!
12/19/2025
corkalu

There are only two apps on my phone which I am willing to pay for an annual subscription. This is the most useful tool & is done so well. I use it while cooking, traveling (money conversion!), buying items that are described with metric dimensions, measuring for projects, etc. There is absolutely no reason to struggle with doing conversions by any other methods when this is the only thing anyone needs. It’s a global life in every way; be prepared with this app.
Problems with the upgrade are easily solved.
01/23/2018
Afrayka
Just upgraded to the full pack with no ads but didn't initially see any changes. Contacted developer and they got back to me quickly; guided me to the settings menu in the app and Iclicked "restore in app purchases". The upgrade is all good now and this app seems like a clean, simple, and helpful tool I will no doubt use quite often. Like many, I hated the pop up ads and happy to pay for the upgrade.

Developer Response
Hi, please write to olivier@oworld.co, I will be able to help you. You don't have to buy another pack. You can try to restore the in app purchase, it should fix the issue. I'm sorry about the inconvenience.
Problems with the upgrade are easily solved.
01/23/2018
Afrayka

Just upgraded to the full pack with no ads but didn't initially see any changes. Contacted developer and they got back to me quickly; guided me to the settings menu in the app and Iclicked "restore in app purchases". The upgrade is all good now and this app seems like a clean, simple, and helpful tool I will no doubt use quite often. Like many, I hated the pop up ads and happy to pay for the upgrade.
Developer Response 01/22/2018
Hi, please write to olivier@oworld.co, I will be able to help you. You don't have to buy another pack. You can try to restore the in app purchase, it should fix the issue. I'm sorry about the inconvenience.
Poor maneuvering
11/20/2017
Healthy Cuisinist
When I went use this app, I needed a fraction of a cup. I went into the volume section of the app, and proceeded to enter in my data. The only problem was, there was no “.” On their built-in keypad. Instead there was a button that look like a button to go to another keypad which might contain the “.” Button. When I press this, it led me back to the main conversion type selection screen. And in the one minute that I was actually using the app, I got three different advertisements popped up in my face. This made it very cumbersome to actually get any work done. I wasn’t even able to try this stuff out because the app was not programmed in a way that makes any sense to the user.

Developer Response
Hello, I'm sorry about your experience. I just fix the mistake about the "." it, you will see the "." next to the "+" on the keyboard. Thank you for the feedback.
Poor maneuvering
11/20/2017
Healthy Cuisinist

When I went use this app, I needed a fraction of a cup. I went into the volume section of the app, and proceeded to enter in my data. The only problem was, there was no “.” On their built-in keypad. Instead there was a button that look like a button to go to another keypad which might contain the “.” Button. When I press this, it led me back to the main conversion type selection screen. And in the one minute that I was actually using the app, I got three different advertisements popped up in my face. This made it very cumbersome to actually get any work done. I wasn’t even able to try this stuff out because the app was not programmed in a way that makes any sense to the user.
Developer Response 11/21/2017
Hello, I'm sorry about your experience. I just fix the mistake about the "." it, you will see the "." next to the "+" on the keyboard. Thank you for the feedback.

What's new: • New Baker's Percentage calculator: flour is 100%, every ingredient shows its percentage and weight, editable both ways, in grams or ounces. Start from 8 recipes: bread, baguette, sourdough, Neapolitan and New York pizza, focaccia, brioche and sandwich bread. • Search now finds calculators by their name. • Fewer interruptions: rating requests now appear much less often. • Privacy: you can now change your consent choices from Settings, where applicable. • Fixes: screw sizes, Beaufort wind scale, size tables and inch fractions (2.5 now shows as 2 1/2).

Version 3.0.30 6d ago

Subscriptions

Conversion Calculator Pro - 1y

No Ads + all units + Premium support

Free Trial

In-App Purchases

Convert all units + No ads

Currency, angles, forces, etc... + No ads

$29.99

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You

The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

Information

Seller: oWorld Software
Size: 73 MB
Category: Travel
Compatibility: Requires iOS 16.0 or later.

iPhone
Requires iOS 16.0 or later.

iPad
Requires iPadOS 16.0 or later.

Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.0 or later.

Apple Watch
Requires watchOS 10.6 or later.
Languages: English and 8 more

English, French, German, Hindi, Italian, Simplified Chinese, Spanish, Thai, Traditional Chinese
Age Rating: 4+

4+

Learn More

Contains
Advertising
In-App Purchases: Yes

Conversion Calculator Pro - 1y $19.99

Convert all units + No ads $29.99

Premium 1 month $2.49

Premium 1 year $14.99

Get premium $14.99

Remove Ads 1y $0.99

Currency Converter 1y $1.99

Conversion liquids/volumes 1y $0.99

Unit Converter Premium - 1y $8.99

Conversion angles, forces 1y $1.99

Learn More

Developer Website

Privacy Policy

Supports

Family Sharing

Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

More by oWorld Software

View

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

Entertainment
View

Money converter - Currency

Convert exchange rates
View

Animal sounds - Images

Noises & Photos
View

Firearm simulator : sounds, noises and images, photos FREE

Entertainment
View

Class Timetable by TimeTo

Homework & Schedule Planner
View

Weight Tracker, BMI monitor

Track your losing weight, goal
View

Soundboard: Sound effects / board and play pranks!

Utilities
View

Banana Split, Bill & Expenses

Costs: Friends & Group
View

Countdown - Time since

Track Day Counter & Timer
View

Kids Timer by Kiddo

Fun countdown for parents
View

Sudoku: Puzzle Game!

9x9 case
View

Chore chart, Allowance By Enzo

Cleaning schedule & tracker
View

Work Time Tracker: Track hours

working days