Roman Numeral Converter

Convert numbers to Roman numerals and back — step-by-step breakdown, date mode, 1–100 chart

Converter (1 – 3,999)

Nearby numbers

Date → Roman Numerals

Convert a date for a tattoo, inscription, or formal document. Each part (month, day, year) is converted separately.

Separator:
Tattoo tip: For best legibility, avoid very long strings — break the year into pairs if needed (e.g. XX·XXVI for 2026). Bold serif fonts like Trajan, Times New Roman, or Palatino read best for Roman numeral tattoos. Always confirm the final string with your artist before inking.

Roman Numeral Reference Chart

SymbolValueNotes
I1Base unit
IV4Subtractive: 5−1
V5Half-ten
IX9Subtractive: 10−1
X10Base ten
XL40Subtractive: 50−10
L50Half-hundred
XC90Subtractive: 100−10
C100Centum
CD400Subtractive: 500−100
D500Quingenti
CM900Subtractive: 1000−100
M1000Mille

Roman Numerals 1 – 100

Click any number to load it in the converter above.

Super Bowl Roman Numerals

Super Bowl numbers are traditionally written in Roman numerals. Here are recent and upcoming editions.

YearBowl #Roman

How Roman Numerals Work

Roman numerals use 7 base symbols (I, V, X, L, C, D, M) combined with additive and subtractive rules:

Additive rule

When a smaller (or equal) symbol follows a larger one, their values are added. VIII = 5+1+1+1 = 8.

Subtractive rule

When a smaller symbol precedes a larger one, it is subtracted. IV = 5−1 = 4, CM = 1000−100 = 900. Subtractive pairs are limited: I can precede V and X; X can precede L and C; C can precede D and M.

Repetition rule

I, X, C, and M can repeat up to 3 times consecutively. V, L, and D cannot repeat. So MMMCMXCIX (3999) is the largest standard Roman numeral.

Validity rules this converter enforces

  • No symbol repeats more than 3× in a row (VV, LL, DD, etc. are invalid)
  • Only standard subtractive pairs are accepted (not IC, XM, etc.)
  • Input characters must be I, V, X, L, C, D, or M only
  • The numeral must represent a value between 1 and 3999

Frequently Asked Questions

What is 2026 in Roman numerals?
2026 in Roman numerals is MMXXVI. Breakdown: MM (2000) + XX (20) + VI (6).
What are the basic Roman numeral symbols?
I=1, V=5, X=10, L=50, C=100, D=500, M=1000. Subtractive pairs: IV=4, IX=9, XL=40, XC=90, CD=400, CM=900.
What is the highest number in Roman numerals?
Standard Roman numerals go from 1 to 3999. MMMCMXCIX = 3999.
Is 'IC' a valid Roman numeral for 99?
No. IC is not valid. The correct form for 99 is XCIX. I can only precede V and X in subtractive position.
How do I write a date in Roman numerals for a tattoo?
Use the Date → Roman section. Enter month, day, and year and choose a separator style. Example: June 14, 2026 → VI · XIV · MMXXVI.
What year is it in Roman numerals?
2026 in Roman numerals is MMXXVI.
Why can't I use IIIII for 5?
No symbol can repeat more than 3 times consecutively in standard Roman notation. V is the symbol for 5. IIIII is non-standard and this converter rejects it.