Se ejecuta localmente en tu navegador. Nada de lo que introduces se sube a nuestros servidores.
El resultado aparecerá aquí
Tips for CIDR math
Everything is calculated locally — no network request.
/31 and /32 have special host semantics (point-to-point / single host).
Wildcard masks are useful for some ACL syntaxes.
Double-check prefix length before changing production routes.
IPv6 CIDR is not covered in this calculator yet.
Acerca de CIDR calculator
El procesamiento se queda en el navegador — no subimos tu entrada a nuestros servidores.
Calculate network, mask, and host range for an IPv4 CIDR.
Transforma datos en local: pegar, ejecutar, copiar — sin subir el payload.
Cómo usar CIDR calculator
Paste the input
Paste the text or data you want CIDR calculator to process.
Run the action
Choose format/encode/convert options if available, then run.
Copy the output
Review the result and copy it. Clear fields when finished.
Preguntas frecuentes
Is CIDR calculator free?
Yes. It is free to use in the browser with no signup required.
Is my data sent to a server?
El procesamiento se queda en el navegador — no subimos tu entrada a nuestros servidores.
Do I need to install anything?
No. CIDR calculator is a web utility — open the page and start.
When should I use CIDR calculator?
Calculate network, mask, and host range for an IPv4 CIDR.