Convertidor de números romanos: números, años y fechas
Convert between numbers and Roman numerals
MMXXVI
2026
Plain letters cover 1 to 3,999. Larger numbers, up to 3,999,999, put a bar over the thousands (V with a bar is 5,000). Dates use years 1 to 3,999.
How 2,026 is written
1. thousands: 2,000
2,000 is written MM
Using value = 2,000
Result: MM
2. tens: 20
20 is written XX
Using value = 20
Result: XX
3. ones: 6
6 is written VI
Using value = 6
Result: VI
4. Join the pieces
Write the pieces from the largest place to the smallest
Using pieces = MM + XX + VI
Result: MMXXVI
Roman numerals chart 1–100 and key years
Roman numerals, 1 to 100
| 1 to 25 | 26 to 50 | 51 to 75 | 76 to 100 | ||||
|---|---|---|---|---|---|---|---|
| 1 | I | 26 | XXVI | 51 | LI | 76 | LXXVI |
| 2 | II | 27 | XXVII | 52 | LII | 77 | LXXVII |
| 3 | III | 28 | XXVIII | 53 | LIII | 78 | LXXVIII |
| 4 | IV | 29 | XXIX | 54 | LIV | 79 | LXXIX |
| 5 | V | 30 | XXX | 55 | LV | 80 | LXXX |
| 6 | VI | 31 | XXXI | 56 | LVI | 81 | LXXXI |
| 7 | VII | 32 | XXXII | 57 | LVII | 82 | LXXXII |
| 8 | VIII | 33 | XXXIII | 58 | LVIII | 83 | LXXXIII |
| 9 | IX | 34 | XXXIV | 59 | LIX | 84 | LXXXIV |
| 10 | X | 35 | XXXV | 60 | LX | 85 | LXXXV |
| 11 | XI | 36 | XXXVI | 61 | LXI | 86 | LXXXVI |
| 12 | XII | 37 | XXXVII | 62 | LXII | 87 | LXXXVII |
| 13 | XIII | 38 | XXXVIII | 63 | LXIII | 88 | LXXXVIII |
| 14 | XIV | 39 | XXXIX | 64 | LXIV | 89 | LXXXIX |
| 15 | XV | 40 | XL | 65 | LXV | 90 | XC |
| 16 | XVI | 41 | XLI | 66 | LXVI | 91 | XCI |
| 17 | XVII | 42 | XLII | 67 | LXVII | 92 | XCII |
| 18 | XVIII | 43 | XLIII | 68 | LXVIII | 93 | XCIII |
| 19 | XIX | 44 | XLIV | 69 | LXIX | 94 | XCIV |
| 20 | XX | 45 | XLV | 70 | LXX | 95 | XCV |
| 21 | XXI | 46 | XLVI | 71 | LXXI | 96 | XCVI |
| 22 | XXII | 47 | XLVII | 72 | LXXII | 97 | XCVII |
| 23 | XXIII | 48 | XLVIII | 73 | LXXIII | 98 | XCVIII |
| 24 | XXIV | 49 | XLIX | 74 | LXXIV | 99 | XCIX |
| 25 | XXV | 50 | L | 75 | LXXV | 100 | C |
How to convert a number to Roman numerals
Seven letters do all the work: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500 and M = 1,000. Split the number into thousands, hundreds, tens and ones, write each part, and join them. Six pairs are written by subtraction: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400 and CM = 900.
Example: 1994 = M + CM + XC + IV, which is MCMXCIV. And 2026 = MM + XX + VI, which is MMXXVI. The converter above shows this working for any number you type.
Why IIII and IC are wrong
Standard numerals never write I, X or C more than three times in a row, so 4 is IV, not IIII. IIII is a clock-face tradition, so the converter reads it and says so, but the standard form is IV.
Only I (before V or X), X (before L or C) and C (before D or M) can be subtracted. So 99 is XCIX, not IC; 49 is XLIX, not IL; and 999 is CMXCIX, not IM. V, L and D are never repeated or subtracted.
Dates in Roman numerals (wedding, tattoo)
Convert the day, month and year one by one and join them with a separator. 14 June 2026 is XIV.VI.MMXXVI (day.month.year), or VI.XIV.MMXXVI in US order; 4 July 1776 is VII.IV.MDCCLXXVI. Dots are the usual style, and a middle dot or slash is common on tattoos and certificates. Use the date boxes above; the year must be from 1 to 3,999.
About Roman Numeral Converter
Converts numbers to Roman numerals and Roman numerals back to regular numbers, in either direction.
Type a number in the left box to see its Roman numeral, with the working below, or a Roman numeral in the right box to see the number. The two boxes work separately. The date box turns a day, month and year into Roman numerals with the separator you pick. A reference table for 1 to 100 and for years sits below.
Plain letters stop at 3,999 (MMMCMXCIX). Above that a bar over a letter multiplies it by 1,000, so V with a bar is 5,000, and the limit here is 3,999,999. The bar is written with the Unicode combining overline when you copy, so it may look slightly off in some fonts. Type a barred numeral with bars or in brackets: (V) is 5,000.
Watch: Roman Numeral Converter in Action
- ¿Cómo convierto un número a números romanos?
- Escribe cualquier número entero del 1 al 3 999 999 y el número romano aparece al instante, formado por millares, centenas, decenas y unidades. Por encima de 3999 los millares llevan una barra sobre las letras.
- ¿Cómo convierto números romanos a números?
- Escribe el número romano en su casilla, por ejemplo MMXXVI. Una letra menor antes de una mayor se resta (IV, IX, XL, CM); en los demás casos las letras se suman. MMXXVI = 2026.
- ¿Cómo escribo una fecha o un año en números romanos?
- Usa las casillas de fecha y elige el orden, por ejemplo mes.día.año (EE. UU.). Cada parte se convierte por separado, así que 7.4.1776 se vuelve VII.IV.MDCCLXXVI, un formato popular para tatuajes, bodas y aniversarios.
- How do I write numbers above 3,999 in Roman numerals?
- Put a bar (a vinculum) over the letters: a bar multiplies by 1,000, so V with a bar is 5,000 and I V with bars is 4,000. This converter goes up to 3,999,999 and shows the bar over the letters; when you copy, the bar is the Unicode combining overline. To type a barred numeral, put the barred group in brackets, such as (V) for 5,000 or (XII)CCCXLV for 12,345. Without bars, MMMCMXCIX (3,999) is the largest value, because no letter is bigger than M and a letter repeats at most three times.
- How do I see the working for a Roman numeral?
- Under the result, open How 1,994 is written (for example). It splits the number by place, thousands, hundreds, tens and ones, so 1994 = M + CM + XC + IV, and joins the pieces. A reference table of 1 to 100 and of the years 1950 to 2050 sits below it; copying or downloading it uses one of your trial uses for the visit.
- What do I, V, X, L, C, D and M stand for?
- I = 1, V = 5, X = 10, L = 50, C = 100, D = 500 and M = 1,000.
- ¿Cómo se escribe 2026 en números romanos?
- MMXXVI: MM (2000) + XX (20) + VI (6). Escribe 2026 en la casilla de número para ver el mismo desarrollo.
- ¿Cómo se escribe 4 en números romanos?
- IV, uno menos que cinco. IIII solo se ve en algunos relojes; el convertidor lo lee y te indica que la forma estándar es IV.
- ¿Cuál es el número romano más grande?
- En la forma estándar es 3999, MMMCMXCIX. Una barra sobre una letra la multiplica por 1000, y este convertidor llega hasta 3 999 999 de esa manera.
- ¿Existe el cero en los números romanos?
- No. El sistema romano no tiene un símbolo para el cero, por lo que el 0 y los números negativos no se pueden convertir.
- ¿Lo que escribo se envía a algún lugar?
- No. La conversión se hace por completo en tu navegador y no se sube nada.
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