Roman Numerals and Converter
Convert, learn, date & clock
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Convert any number to Roman numerals instantly — perfect for tattoos, dates, years, homework and clock faces. Learn the rules, take a quiz, and copy with a single tap.
Roman Numerals is the complete, beautifully designed toolkit for reading, writing and understanding Roman numerals — whether you need a quick conversion, help with a tattoo, or a way to finally learn the rules.
CONVERT INSTANTLY
• Turn any number into Roman numerals, and any numeral back into a number — live, as you type.
• Full range from 1 all the way to 3,999,999 using authentic vinculum (overline) notation for large numbers.
• See exactly how each numeral breaks down, e.g. MCMXCIV = M + CM + XC + IV, with every additive and subtractive group explained.
• Copy any result with a single tap.
PERFECT FOR TATTOOS, DATES & GIFTS
• Convert a full date into Roman numerals — ideal for tattoos, rings, engravings and anniversary gifts.
• Turn birth years, wedding years and copyright dates into elegant numerals.
• Choose your own separators and day/month order.
LEARN & PRACTICE
• A clear, friendly guide to the seven symbols (I V X L C D M) and every rule — additive, subtractive, repetition and the vinculum.
• A short, accurate history of where Roman numerals came from.
• Test yourself with a built-in quiz across four difficulty levels and track your best streak.
HANDY TOOLS
• A Roman-numeral clock face, including the classic IIII convention watchmakers use.
• Add and subtract directly in Roman numerals, with the working shown step by step.
• A fully searchable reference chart — 1 to 100, tens, hundreds, thousands and notable years.
DESIGNED WITH CARE
• A premium, inscriptional look inspired by carved stone and gold.
• Light and dark mode, Dynamic Type and full VoiceOver support.
• Available in 24 languages.
• No account, no sign-up, no clutter.
Whether you are decoding a movie’s copyright year, planning a tattoo, helping with homework or just curious, Roman Numerals makes it effortless.
Download now and convert, learn and create with confidence.
Ratings & Reviews
• New Tattoo Mode: tap to show any Roman numeral full-screen — big and crisp, ideal for tattoos, gifts or a quick photo.
• Flip between a light or dark background, and the screen stays awake while you show it off.
• Small refinements and fixes throughout.
The developer, Alper Sumer Guc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
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
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Alper Sumer Guc
- Size
- 5.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 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.
- iPhone
- Languages
English and 18 more
- English, Arabic, Dutch, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 deve.net