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Conversor de Números Romanos — Herramienta online gratis

Convierte números a romanos y viceversa

Convierte números arábigos (1-3999) a números romanos y viceversa. Instantáneo y preciso.

Reference
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
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Free Roman numerals converter

Convert Arabic to Roman (1-3999) and back. Live, instant, bidirectional.

How to use this tool

  1. 1

    Enter any number

    1 to 3999 (standard Roman range).

  2. 2

    Or enter Roman numerals

    Like XIV, MMXXVI — we convert back to digits.

  3. 3

    Both directions work live

    Type in either box, the other updates.

Frequently Asked Questions

Max number?
Standard Roman: 3999 (MMMCMXCIX). For bigger, ancient Romans used bars above letters to multiply by 1000 — we don't support that.
Reference
I=1, V=5, X=10, L=50, C=100, D=500, M=1000. Smaller before larger = subtraction (IV = 4).

Puntos clave

  • Roman Numerals Converter is a free, browser-based calculator tool — convert numbers to roman and back.
  • No signup, no downloads, no file uploads. Herramientas run in your browser; the few that need an outside service say so on the page.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Roman Numerals Converter

  1. Open the tool: Launch Roman Numerals Converter on Herramientaolis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Roman Numerals Converter — Quick Facts

Precio
Gratis — sin límites, sin marcas de agua, sin paywall
Privacidad
Se procesa en tu navegador. Las herramientas que necesitan un servicio externo lo indican en la página. Se cuentan las visitas (Google Analytics).
Plataforma
Cualquier navegador moderno — escritorio, tablet o móvil
Categoría
Calculadora Herramientas on Herramientaolis
Sin conexión
Works offline after first visit (Progressive Web App)
CaracterísticaDetalles
HerramientaRoman Numerals Converter
CategoríaCalculadora
Requiere registroNo
Subida de archivoNinguno — procesado en el navegador
Compatible con móvilTotalmente adaptable
CosteGratis para siempre

Why Use Roman Numerals Converter?

You should try Roman Numerals Converter for a quick, private way to convert numbers to roman and back. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacidad. Esta herramienta funciona enteramente en tu navegador. Tus datos nunca se suben a ningún servidor.