See any CIDR as binary maps — IP, mask, and network bits plus a 32-block network/host bar. Single-network rendering only, no sub-subnetting — local rendering, free, no signup.
Content reviewed October 2026 · About Toolzum
Compute subnet masks, network/broadcast addresses, and usable host ranges from any CIDR. Plan a /24 office network correctly — local math, free, no signup.
Convert CIDR prefixes to masks, ranges, and host counts — /8 through /32 decoded. Answer 'how many IPs in a /22' instantly — local math, free, no signup.
Parse any URL into its components — protocol, hostname, path, query parameters, hash, and more with copy-to-clipboard. Host, path, query, and fragment split with decoding — debug redirect chains precisely. Runs locally, free, no signup.
Convert a single course percentage into its letter grade on the built-in plus/minus scale — see that an 85 earns a B instantly. Free, local, no signup.
Encode any text into binary (base-2) byte sequences with visible separators. See exactly how computers store letters — local encoding, free, no signup.
The tool does not subdivide networks — it renders one CIDR as binary rows and a network/host bar. Plan department splits separately.
Green blocks are network bits, muted blocks are host bits — a single two-tone bar, not per-subnet bands. No overlap detection.
Copy gives the IP/mask/bit-count readout as text — there is no allocation table or map image.
No — visualization renders locally in your browser. Nothing leaves your device.
Subnet Calculator
Compute subnet masks, network/broadcast addresses, and usable host ranges from any CIDR. Plan a /24 office network correctly — local math, free, no signup.
CIDR Calculator
Convert CIDR prefixes to masks, ranges, and host counts — /8 through /32 decoded. Answer 'how many IPs in a /22' instantly — local math, free, no signup.