Calculators & Tools That Actually Help

No catch — they're genuinely free. We cover costs through unobtrusive advertising. You'll never hit a paywall or be asked to upgrade. Every tool works fully, right now, zero dollars.

Our calculators use standard, well-documented formulas — the same ones you'd find in finance textbooks, medical references, or engineering handbooks. That said, they're tools for estimation and learning, not professional advice. For major financial or health decisions, always consult a qualified professional.

No. All calculations happen right in your browser. Nothing you type is sent to our servers or stored in a database. Close the tab and it's gone — the way it should be.

Absolutely not. No account, no app, no extension. Open the page, enter your numbers, get your answer. That's the whole workflow.

Yes — every tool on GenHelper is fully responsive. Whether you're on a laptop, phone, or tablet, the calculators adjust to your screen and work just as well. No pinch-to-zoom required.