Subnet Calculator | IPv4 CIDR Network Calculator Online
Subnet calculator computes IPv4 network masks, broadcast addresses, and host ranges from any IP and CIDR prefix - fast, free, and works entirely in your browser.
Also known as: subnet calculator online · ipv4 cidr calculator · network subnet mask · broadcast address calculator · host range calculator · cidr to subnet mask · ip address subnet tool · subnet calculator · subnet calculator generator · subnet calculator generator online
Liked this tool?
DevToolLab is free to use. If this networking saved you some time today, please consider supporting our work.
Frequently asked questions
What is Subnet Calculator used for?
Subnet calculator computes IPv4 network masks, broadcast addresses, and host ranges from any IP and CIDR prefix - fast, free, and works entirely in your browser.
Is Subnet Calculator free to use?
Yes. Subnet Calculator is completely free with no usage limits, and there is no paid tier required to use it.
Do I need an account to use Subnet Calculator?
No. Subnet Calculator works immediately in your browser with no signup, login, or email address required.
Related Tools
Free URL status and HTTP response checker. See the status code, response headers, every 301/302 redirect hop and the response time for any link. No signup.
Generate a unique URL to easily test, receive and inspect HTTP webhooks in real-time. View request headers, query parameters, JSON payloads, and more.
Look up geolocation, ISP, timezone, and other information for any IP address. Find your public IP and trace IP locations instantly.