Roman Numerals Converter
4.6star
785 reviews
100K+
Downloads
Everyone
info
About this app
Two-way conversion between Roman numerals and Arabic (decimal) numbers
Converts Roman numerals from 1 - 3,999,999
Supports 5 operations (^ * / + -), parenthesis, and decimal points
Follows the correct order of operations
Interprets expressions consisting of Roman numerals, Arabic (decimal) numbers, and a combination of the two
Able to reformat improper Roman numerals and simplify expressions
Displays output as you type
Copy/paste functionality
Custom keyboard
English, Spanish, and Russian
0.15 MB download
No permissions
No ads
Converts Roman numerals from 1 - 3,999,999
Supports 5 operations (^ * / + -), parenthesis, and decimal points
Follows the correct order of operations
Interprets expressions consisting of Roman numerals, Arabic (decimal) numbers, and a combination of the two
Able to reformat improper Roman numerals and simplify expressions
Displays output as you type
Copy/paste functionality
Custom keyboard
English, Spanish, and Russian
0.15 MB download
No permissions
No ads
Updated on
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Ratings and reviews
4.6
721 reviews
Jalyn Mccall (The Veiled One)
- Flag inappropriate
April 25, 2023
I wish it was still updated more regular, because every time I open the app it does ask me to check for updates. Other than that I really love the app because I love how I can calculate and Roman numerals. I run a medieval based game that uses Roman numerals to calculate currency, because usually is seen as a sin, so debts are prohibited.
1 person found this review helpful
Joel Christophel
November 24, 2023
Just updated the app to target Android 13. Enjoy :)
David Swonger
- Flag inappropriate
February 11, 2024
This is the 3rd Roman Numeral converter I've tried, and it's the ONLY one that correctly converts numbers greater than 3,999. Thanks for an easy to use, accurate app!
Joel Christophel
February 11, 2024
You're very welcome!
William Wilkerson
- Flag inappropriate
January 22, 2023
GREAT APP! Does exactly what I was looking & hoping for...! BUT that's not all โ also has a built-in CALCULATOR (including basic @mathematics features characters (ex: parenthesis and exponents) โ and the mathematics allows for mixed statements (ex: Roman Numerals & Standard Base-10 in the same statement, like so: IX * 3 = 27; where IX is equivalent to 9 in Base-10 numbers)... FINALLY, there is a "SIMPLIFY" button that fixes any statements, ex: ORIG: "DXD" should be written as "CMXC" [=990]...
1 person found this review helpful
What's new
v1.1.3 Updated to target Android 13
v1.1.2 Available to devices running Android 2.0 (API level 5), copy/paste functionality available to all, translated into Russian
v1.1.1 Fixed bugs, reduced file size
v1.1 Added copy/paste functionality for users with Android 3.0 (API level 11) and up, upgraded to a more conventional counting system
v1.0.3 Overline button turns off automatically
v1.0.2 Available to devices running Android 2.3 (API level 9) and up, reduced file size by 40%
v1.1.2 Available to devices running Android 2.0 (API level 5), copy/paste functionality available to all, translated into Russian
v1.1.1 Fixed bugs, reduced file size
v1.1 Added copy/paste functionality for users with Android 3.0 (API level 11) and up, upgraded to a more conventional counting system
v1.0.3 Overline button turns off automatically
v1.0.2 Available to devices running Android 2.3 (API level 9) and up, reduced file size by 40%