CIDR to Subnet Mask
Convert CIDR notation to subnet mask. Free, instant.
parseInt(x,2)).join('.');"}'>
How to Use CIDR to Subnet Mask
1
Enter CIDR prefix length.
2
Get subnet mask.
3
Copy or download your result.
Frequently Asked Questions
What does CIDR mean?
Classless Inter-Domain Routing. /24 means 24 bits for network, 8 bits for hosts.