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Dev tools · January 24, 2026

APYCalc.net

Hey HN! Maker here. I built APYCalc.net after getting frustrated with financial calculators that require email sign-ups and track your inputs. **Tech Stack**: • Vanilla JavaScript (no frameworks, no dependencies) • 100% client-side execution (calculations never hit a server) • No cookies, no analytics, no tracking • Hosted on Cloudflare Pages **How It Works**: All calculations use industry-standard formulas (e.g., APY = (1 + r/n)^n - 1). Your inputs are processed entirely in-browser via Web APIs. > **Why I Built This**: I compared 10 popular APY calculators with identical inputs.…

APYCalc.net launched on January 24, 2026 with 2 votes, #6,591 of 14,584 launches that month.

What it does

Banks and DeFi protocols often show nominal rates (APR) to mask true returns. APYCalc clarifies this by instantly converting APR to APY with custom compounding intervals. Visualize your real staking rewards or savings growth over time. 100% private, no wallet connection required.

Free online APY calculator tools. Convert APR to APY, calculate compound interest, compare CD rates, and plan savings goals. Accurate, private, and instant.

Convert APR to APY, model compound interest, compare CD rates, and plan savings goals — all running privately in your browser. Convert Annual Percentage Rate to Annual Percentage Yield to see your true return. Reverse-calculate the underlying APR from an advertised APY to compare loan offers. Visualize how investments grow over time with the power of compound interest. Calculate your Certificate of Deposit earnings at maturity with exact interest. Plan savings goals and see how regular contributions compound over time. Financial clarity should be free and accessible. Our tools use the same formulas banks rely on. All calculations happen in your browser. We never store, save, or transmit…from apycalc.net

In the maker’s words, at launch

Hey HN! Maker here. I built APYCalc.net after getting frustrated with financial calculators that require email sign-ups and track your inputs. **Tech Stack**: • Vanilla JavaScript (no frameworks, no dependencies) • 100% client-side execution (calculations never hit a server) • No cookies, no analytics, no tracking •…

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