Free Online Roman Numeral Converter – Numbers, Dates & Years to Roman Numeral

Roman Numeral Converter

Numbers • Roman numerals • Dates • Step-by-step breakdown • 100% free

Enter a number Large numbers up to 3,999,999 (overline = ×1000)

In Roman numerals

Enter a Roman numeral

Number value

Pick a date

Date format MM.DD.YYYY (US) DD.MM.YYYY (UK, Europe, Asia) YYYY.MM.DD (ISO)

Separator Dot ( . ) Middle dot ( · ) Bullet ( • ) Dash ( - ) Slash ( / ) Space

Date in Roman numerals

Free Online Roman Numeral Converter

Convert any number to Roman numerals, or turn Roman numerals back into normal numbers, as you type. Each result comes with a step-by-step breakdown so you can see how it works. The date converter turns birthdays, anniversaries and wedding dates into Roman numerals, which is popular for tattoos, engravings and invitations.

Roman Numeral Symbols

1I

5V

10X

50L

100C

500D

1000M

Roman Numerals Chart

1I

2II

3III

4IV

5V

6VI

7VII

8VIII

9IX

10X

11XI

12XII

15XV

20XX

30XXX

40XL

50L

90XC

100C

400CD

500D

900CM

1000M

1999MCMXCIX

2000MM

2024MMXXIV

2025MMXXV

2026MMXXVI

2027MMXXVII

How Roman Numerals Work

1. Add symbols from left to right: VI = 5 + 1 = 6, and XXI = 10 + 10 + 1 = 21.
2. A smaller symbol before a larger one is subtracted: IV = 5 – 1 = 4, and XC = 100 – 10 = 90.
3. Only six subtractive pairs are used: IV (4), IX (9), XL (40), XC (90), CD (400) and CM (900).
4. A symbol never repeats more than three times in a row: 4 is IV, not IIII.
5. There is no zero, and standard Roman numerals stop at 3,999 (MMMCMXCIX). Larger numbers use a line over a symbol to multiply it by 1,000.

How to Write a Date in Roman Numerals

Convert the month, day and year separately, then join them with dots or another separator. For example, 25 December 2026 is XXV.XII.MMXXVI in DD.MM.YYYY format, or XII.XXV.MMXXVI in the US MM.DD.YYYY format. Check that the format matches what you want before you get a tattoo or an engraving.

Frequently Asked Questions

What is 2026 in Roman numerals?

2026 in Roman numerals is MMXXVI (1000 + 1000 + 10 + 10 + 5 + 1).

How do you write 4 in Roman numerals?

4 is written as IV (5 – 1). IIII is sometimes seen on clock faces, but IV is the standard form.

What is the largest Roman numeral?

With standard symbols, the largest number is 3,999 (MMMCMXCIX). With an overline that multiplies by 1,000, this tool goes up to 3,999,999.

Is there a zero in Roman numerals?

No. The Roman numeral system has no symbol for zero, so conversion starts at 1.

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