Subnet Mask to CIDR
Convert subnet masks to CIDR notation. Free, instant.
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How to Use Subnet Mask to CIDR
1
Enter subnet mask.
2
Get CIDR notation.
3
Copy or download your result.
Frequently Asked Questions
Common subnets?
/24 = 255.255.255.0 (254 hosts). /16 = 255.255.0.0 (65534 hosts).