About
Numeral X reads Roman numerals off things. Point the camera at a clock face, a cornerstone, a film credit or the title page of an old book, and it finds the numerals in the picture and converts them.
WHAT MAKES NUMERAL X DIFFERENT
- The camera does the typing
Pro recognises text in a live capture or a photo, picks the Roman numerals out of it and converts them, so nothing has to be transcribed by hand. - Five hundred at a time
Pro converts a range written as 1-500, or a pasted list, in a single pass. - Clock-face numerals
A toggle switches to the additive spelling that clocks actually use, where four reads IIII rather than IV. - Numbers well past 3,999
The overline notation is supported, so values up to 3,999,999 convert properly instead of stopping at MMMCMXCIX. - Dates as well as numbers
Convert a year on its own, or a full day, month and year together.
PRICING
Included: live two-way conversion, the clock-face toggle, the extended range, the date converter and your last five conversions. Numeral X Pro is a one-time in-app purchase, never a subscription. It adds camera and photo scanning, batch and range conversion, and unlimited history with export.
FEEDBACK
Made by a small indie team. Email obeliskclubclub@gmail.com with feedback, bug reports, or feature requests.
Terms of Use (EULA): https://obelisk.club/romannumeralconverter/terms
Core Capabilities
Pro: read Roman numerals from the camera or a photo
Pro: convert a range like 1-500, or a pasted list
Clock-face mode where four reads IIII, not IV
Overline notation for values up to 3,999,999
Live two-way conversion as you type
Convert a year, or a full day, month and year
Interface

High Fidelity UI

High Fidelity UI

High Fidelity UI
More from Obelisk
SnapPro
Pixel-perfect capture, unlimited recording, on-device OCR — included at no additional purchase.
ViewOne
Your iPhone fired off 50 burst photos at the playground. Now they're sitting on your Mac, and you can't bring yourself to sort through them. ViewOne fixes that.
PhotoBridge
No third-party cloud. No subscription to a stranger's photo silo.
How Numeral X compares
Honest, dimension-by-dimension comparisons — including where the other tool wins.