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Gratis Subnet / CIDR Calculator

Calculate network address, broadcast, usable host range, subnet mask, and host count from any IPv4 address and CIDR prefix.

Runs in your browserNo sign-up, no pop-upsIngen login krævetGratis for altid
/
/0/8/16/24/32
254
Usable hosts
256
Total addresses
Network address192.168.1.0/24
Usable host range192.168.1.1 – 192.168.1.254
Broadcast address192.168.1.255
Subnet mask255.255.255.0
Wildcard mask0.0.0.255
Mask (binary)11111111.11111111.11111111.00000000
IP classC
Address typePrivate (RFC 1918)

IPv4 subnetting reference. /31 and /32 are handled per RFC 3021 (point-to-point and single-host). All math runs locally in your browser.

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Sådan fungerer det

1
Indtast
Indtast din tekst eller dine data.
2
Behandl
Behandles øjeblikkeligt i din browser. Ingen server, ingen ventetid.
3
Hent
Gem dit resultat. Intet gemmes.

Hvorfor bruge vores?

Completely free — no hidden costs, ever
No account, email, or login required
Runs entirely in your browser — no uploads
Works on any device — phone, tablet, desktop
Open and ad-supported, with no tracking
Loads fast, with no installation needed

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