Roman Numerals for Design and Tattoos
Get accurately formatted Roman numerals for graphic design, clock faces, tattoos, and monograms.
Common values
Roman numeral rules: I=1, V=5, X=10, L=50, C=100, D=500, M=1000.
Subtractive notation: IV=4, IX=9, XL=40, XC=90, CD=400, CM=900. Standard numerals max out at MMMCMXCIX (3999).
Vinculum: a bar over a numeral multiplies it by 1000 (V̅ = 5000, X̅ = 10000, M̅ = 1,000,000), extending the range to 3,999,999.
Design tips
Tattoo artists and their clients sometimes write Roman numerals incorrectly (e.g. IIII instead of IV). Always verify before going under the needle.
Traditional clock faces use IIII (not IV) for 4 o'clock — this is a historical exception. All other standard Roman numeral rules apply.
For monograms and logos, Roman numerals add a classical, timeless quality. Use uppercase output (already uppercase by default) for display contexts.
Legal name changes, anniversary logos, and family crests commonly include the founding year in Roman numerals. Convert precisely here.
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