Free online web calculator
A fast, clear calculator that works in your browser with no sign-up or installation. For more specific tasks, explore 168 tools organized by category.
Basic web calculator
Add, subtract, multiply or divide directly in your browser.
Supports +, −, ×, ÷, %, ^ and parentheses. Ejemplos: 12 + 8 · 200 × 15% · (12 + 8) × 2.
Scientific functions
Supports sin, cos, tan, sqrt, log, ln, abs, exp, pi, e and factorial (!). Example: sqrt(81) + sin(30).
¿Buscas una calculadora web online?
Esta es una calculadora web online gratis: escribe una operación, obtén el resultado al instante y sigue con una calculadora especializada si necesitas porcentajes, notas, finanzas, fechas o conversiones.
Funciona directamente en el navegador, sin registro ni instalación. Los números se procesan en tu dispositivo y la página explica cómo usar cada herramienta para que el resultado sea fácil de comprobar.
Website cost calculator: how much does a site cost?
If by web calculator you mean the cost of creating a website, compare an indicative range by project type, pages, design, languages, SEO and maintenance.
- Landing page: from €450
- Corporate website: from €1,200
- Online store: from €2,400
What is a web calculator?
A web calculator is a tool that runs inside a web page. CalculadoraDeWeb combines this basic calculator with tools for percentages, grades, loans, dates, conversions, technology, home, health and everyday life.
A web calculator that explains the result
- Works on phones, tablets and computers.
- The result updates when you change a number.
- Calculations run on your device.
- Specialized calculators include a formula, example and limitations.
Frequently asked questions about the web calculator
Is the web calculator free?
Yes. The basic web calculator and all 168 specialized calculators are free to use without an account.
Can I use it on my phone?
Yes. It adapts to phones, tablets and computers and runs directly in your browser.
Are my numbers stored?
We do not store the values you enter or the numerical result in analytics. The calculation runs on your device.