NetworkCalc — IP & Subnet Tools
Extension Actions
- Extension status: In-App Purchases
IP & Subnet calculator, CIDR tools, MAC lookup, Base64/HEX encoders — all-in-one extension for network engineers.
NetworkCalc — IP & MAC Network Calculator (Inspired by sipcalc)
NetworkCalc is a multifunctional network analysis tool built into your browser. Inspired by the popular Linux utility sipcalc, this extension offers powerful tools for:
- IPv4 and IPv6 address breakdown and subnet calculations
- CIDR-to-netmask conversion and subnet membership checks
- IPv6 subnet splitting and address expansion
- MAC address tools with vendor (OUI) lookup
- Encoding/decoding utilities: Base64, Hex, URL, ASCII, MD5
Perfect for network engineers, sysadmins, pentesters, and students.
Some features require a license key (available via Boosty or Patreon).
No cloud. Everything runs locally in your browser.
Latest reviews
- Ilya Dyakonov
- Very useful, especially for fast and emergency calculations!
- Ирина
- Very useful extension. Even the free version is enough for quick subnet and IP calculations.