About netmath.fyi
Free, accurate networking calculators built for IT professionals who need reliable tools without the clutter.
Our Mission
We believe network engineers and IT professionals deserve tools that are accurate, fast, and respect their time. No ads, no accounts, no tracking your network configurations. Just open the calculator, get your answer, and get back to work.
Why We Built This
Too many online calculators are cluttered with ads, require sign-ups, or give results without explaining the math. We wanted something better.
netmath.fyi was built to be the tool we wished existed: calculators that follow industry standards, show their work, and run entirely in your browser so your sensitive network data never leaves your device.
What Makes Us Different
100% Free
No premium tiers, no feature gates. Every calculator is completely free to use.
No Accounts
No sign-ups, no logins. Just open the page and start calculating.
Privacy First
All calculations run locally. Your network data never leaves your browser.
Standards Based
Built on IEEE, IETF, and industry standards. No guesswork or proprietary formulas.
Our Calculators
We cover the calculations network engineers actually need:
Transparency
We believe in showing our work. Every calculator includes references to the standards and formulas we use. Check out our methodology page to learn exactly how each calculation works.
Found an error or have a suggestion? We take accuracy seriously. Let us know and we'll fix it.
Questions or Feedback?
We'd love to hear from you. Whether it's a bug report, feature request, or just to say hi.