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IP
Subnet
Calculator
Free online network calculator. Enter an IP and CIDR to compute the full subnet breakdown.
Input Configuration
IP Address
CIDR / Netmask
/24 — 255.255.255.0
/32 — 255.255.255.255
/31 — 255.255.255.254
/30 — 255.255.255.252
/29 — 255.255.255.248
/28 — 255.255.255.240
/27 — 255.255.255.224
/26 — 255.255.255.192
/25 — 255.255.255.128
/23 — 255.255.254.0
/22 — 255.255.252.0
/21 — 255.255.248.0
/20 — 255.255.240.0
/19 — 255.255.224.0
/18 — 255.255.192.0
/17 — 255.255.128.0
/16 — 255.255.0.0
/15 — 255.254.0.0
/14 — 255.252.0.0
/13 — 255.248.0.0
/12 — 255.240.0.0
/11 — 255.224.0.0
/10 — 255.192.0.0
/9 — 255.128.0.0
/8 — 255.0.0.0
Calculate
Clear
QUICK:
/32
/30
/29
/28
/24
/23
/22
/16
/8
Subnet Breakdown
Network Address
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Copy
Broadcast Address
—
Copy
Subnet Mask
—
Copy
Wildcard Mask
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Copy
First Usable Host
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Copy
Last Usable Host
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Copy
IP Class
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IP Type
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Binary Representation
Field
Binary
Decimal
IP Address
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Subnet Mask
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Network
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Broadcast
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Total Hosts
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Usable Hosts
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CIDR