Hey Product Hunt! 👋 I built Utilibox out of frustration — every time I needed to calculate something simple (net salary, loan payments, ovulation window, PDF compression), I'd end up on bloated sites full of ads, paywalls, or mandatory signups just to get a basic answer. So I started building tools one by one: first a salary calculator for Brazilian labor law, then PDF utilities that run entirely in the browser (no server uploads), then health calculators, then decision-making tools like TOPSIS and PROMETHEE. 100+ tools later, the core principle is still the same: open the page, get the answer, leave. No account. No tracking. No friction. A few things I'm proud of: PDF tools process files locally — your documents never leave your device Financial calculators cover Brazilian-specific rules (IRRF, INSS, 13th salary, FGTS) Everything works on mobile without a dedicated app Would love feedback from the PH community — especially on which tools you'd actually use or what's missing. Happy to answer any questions!

UtiliBox

100+ free tools, calculators, PDF utilities & health tools.

100+ free tools, calculators, PDF utilities & health tools.