About Utility Pages

What is Utility Pages?

Utility Pages is a growing collection of online calculators and developer utilities — TDEE, BMI, GPA, paycheck, JSON formatter, regex tester, password generator, and dozens more. Every tool is mobile-first, runs in your browser, and ships with no popups, no signup walls, and minimal ads.

Our principles

• Speed first.We use static rendering and lazy-load everything that isn't critical. Most pages are interactive in under one second.
• Privacy by default. Calculations happen in your browser whenever possible. We never send your input to a server unless absolutely necessary (and we tell you when we do).
• Honest ads. We monetize with display ads to keep the site free, but we keep them below the fold and never use intrusive interstitials.
• No dark patterns.No fake countdowns, no "basic / pro" gates on working features, no email captures to use the calculator.

Who builds this?

Utility Pages is built and maintained by an indie operator with help from AI coding tools. It started as an experiment in shipping useful, well-built free tools fast and at scale. We're inspired by sites like calculator.net, omnicalculator.com, and wordcounter.net — and aim to do them better on UX while matching their breadth.

Got feedback?

Spotted a bug? Want a calculator that doesn't exist yet? Found a way to make one of ours better? Drop us a line via the contact page — we read every message.

Disclaimer

Our tools are educational estimates, not professional advice. Tax calculators are not tax advice; health calculators are not medical advice; finance calculators are not financial advice. For real decisions about your money, body, or legal situation, talk to a qualified professional.