Roman Numeral Converter — Dates and Tattoo Preview
Free Roman numeral converter: convert any number, date, or year with step-by-step breakdown, tattoo-ready date formats, and strict reverse conversion.
Updated May 2026
Output: MMXXV
Shift+Enter copies result
IX · VI · MCMXCIV
How to Use the Roman Numeral Converter
Number, date, or numeral — convert both ways
1. Type a number or a Roman numeral
Enter an Arabic number (1–3999) in one field, or paste a Roman numeral in the other to decode it instantly.
2. Check the breakdown
See exactly how each symbol builds the result, step by step, with strict validation against malformed numerals.
3. Generate a date format or tattoo preview
Build engraving-ready date formats, or preview a tattoo design and download it as a PNG.
What This Roman Numeral Converter Does
Strict validation, not just conversion
Step-by-step breakdown
Shows exactly how each numeral is assembled, not just the final result.
Strict validation
Rejects illegal subtractive combinations like IL, IC, and XM instead of guessing at an answer.
Full date converter
Day, month, and year converted in multiple formats, ready for tattoos or engraving.
Tattoo preview
Multiple font styles, with a PNG download to show your tattoo artist.
Popular Years in Roman Numerals
When You'll Reach for This Tool
The most common scenarios among people who use this converter
Birth year for a tattoo
Preview it in multiple font styles, then download the PNG to bring to your tattoo artist.
Wedding date for an engraving
Generates every format (dots, slashes, hyphens, vertical) at once, so you can pick whichever fits the piece.
Numbering chapters and volumes
Books, academic papers, and formal reports still use I, II, III... for front matter and tables of contents.
Double-checking a numeral before it's permanent
Confirm a numeral you copied from social media is actually correct before it goes on skin or metal.
Common Mistakes
Writing IL for 49
I can only subtract from V and X — the correct form is XLIX, not IL.
Repeating a symbol more than 3 times
XXXX is wrong — use the next symbol up instead: XL.
Assuming clock faces follow the standard rule
IIII on clock dials is a special convention, not an error — for documents, dates, and tattoos, IV is always the correct form.
Why Strict Validation Matters
Many online converters return a result even for invalid input — that's how mistakes end up permanently inked, engraved, or printed in academic work.
This converter blocks illegal subtractive pairs, malformed sequences, and out-of-order symbols, and shows the full breakdown so you can verify every component before committing the result to something permanent.
Tattoo Date Formats
The converter generates all of them at once
Frequently Asked Questions
MMXXV. Breakdown: MM = 2000 + XX = 20 + V = 5. Total: 2025.
Further Reading
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