Herramientas Gratuitas en Línea — Sin Registro

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Grammar checker, plagiarism detector, word counter, age calculator and more — all free, all instant, all in your browser.

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Herramientas Gratuitas
30+
Idiomas de gramática
0
Registros necesarios
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Gratis, sin límites
✍️ Escritura y Corrección
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Corrector Gramatical
Corrige errores de gramática, ortografía, puntuación y estilo con resaltado de colores y correcciones con un clic. Compatible con 30+ idiomas.
Verificar texto →
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Detector de Plagio
Compare two texts for duplicate content, or check each sentence against the web to detect copied material.
Verificar plagio →
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Contador de Palabras
Cuenta palabras, caracteres, oraciones y párrafos. Estima el tiempo de lectura y muestra las palabras clave.
Contar palabras →
🔢 Números y Matemáticas
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🔢 Popular
Número a Palabras
Convert any number to English words — plus Pakistani / Indian lakh-crore format, cheque wording, and ordinal form.
Convertir números →
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Calculadora de Porcentaje
Three modes: percentage of a number, what percent A is of B, and percentage increase or decrease.
Calcular →
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Generador de QR
Crea códigos QR personalizados con logo, colores y formas. Descarga PNG gratis.
📸 ✨ OCR
Captura → Documento
Upload any photo of a table, receipt or invoice. Extracts all data as Excel, CSV, JSON or plain text.
Extraer datos →
📅 Fechas y Edad
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Calculadora de Edad
Find your exact age in years, months and days — plus total hours lived and next birthday countdown.
Calcular edad →
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Diferencia de Edad
La diferencia exacta de edad entre dos personas en años, meses y días.
Encontrar diferencia →
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Diferencia de Fechas
Días, semanas, meses y años exactos entre cualquier dos fechas. Incluye conteo de días hábiles.
Calcular →
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La mayoría de las herramientas procesan datos en tu navegador. Las que necesitan procesamiento externo lo indican claramente. No registramos nada.

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Funciona en todas partes

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📚 Del Blog
Todos los artículos →
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Numbers
Cómo Escribir Números en Palabras: Guía Completa
Every rule for spelling out numbers correctly — from basic digits to trillions.
8 min read
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Academic
Understanding Plagiarism: A Student's Guide
What actually counts as plagiarism, and how students can protect their work.
9 min read
🇵🇰
Numbers
Lakh, Crore & Arab Explained
Why Pakistan and India count differently — and how to convert between systems.
7 min read
🧾
Finance
How to Write a Cheque Correctly
Step-by-step formatting and mistakes that get cheques rejected by banks.
6 min read

Preguntas frecuentes

Yes — every tool on ToolBase is 100% free with no hidden charges, no premium tier, and no sign-up required. The site is supported by advertising, which keeps all tools permanently free for everyone.

No account is needed. Simply open a tool, paste your text or enter your data, and get instant results. There is no registration, no email address required, and no login wall.

All tools that run calculations locally (word counter, age calculator, number to words, etc.) process your data entirely within your browser — nothing is sent anywhere. For tools that require server-side processing (grammar checker), your text is sent securely to a processing endpoint and is not retained after the response is returned. ToolBase's own servers never receive or store your text.

The Corrector Gramatical supports 30+ languages including English (US, UK, Australian), French, German, Spanish, Arabic, Portuguese, Italian, and more. The Número a Palabras tool supports both International (English) and South Asian (Urdu/Hindi) lakh-crore formats. Other tools work with any text language.

Yes — every tool on ToolBase is fully responsive and works on smartphones and tablets as well as desktop browsers. No app installation is required.

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