Hi Product Hunt! 👋 I'm Ross, one of the creators behind SubnetCalc. As network engineers and developers, we spent years jumping between clunky, ad-ridden 1990s IP calculators and messy, unversioned Google Sheets whenever we needed to lay out cloud VPCs or split local network space. We eventually decided to build the tool we wished existed: a clean, blazingly fast IPv4/IPv6 calculator that goes beyond standard CIDR math. With SubnetCalc, you can visually break down parent networks, assign subnets directly to active projects/systems, and track version history as a team. Core features: ⚡ Instant & Local: Core calculations happen right in your browser—no ads, no slow reloads. 📐 Visual Subnetting: Split CIDR blocks visually without doing manual math. 🏷️ Project Mapping: Organize subnets into structured, versioned projects instead of losing track in a spreadsheet. 🎁 Special Product Hunt Launch Offer: The core calculator is 100% free. Normally, project saving require an annual subscription, but for the Product Hunt launch, we’re releasing a limited batch of Lifetime Individual Accounts. Once this launch batch is gone, it goes back to standard yearly pricing. We’d love for you to give SubnetCalc a spin today! What features or cloud integrations should we build next? We’ll be in the comments all day to answer questions and take feedback! 🙌

Subnet Calc

Subnet calculator with cloud storage & version control

Subnet calculator with cloud storage & version control