The latest articles on DEV Community by Foysal Mostafa (@foysalmostafa). https://dev.to/foysalmostafa https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4061017%2Fb3e7e4b9-2c60-4bf8-89e3-b89884dfc1f0.jpg https://dev.to/foysalmostafa en Foysal Mostafa Sat, 05 Sep 2026 17:15:03 +0000 https://dev.to/foysalmostafa/i-built-53-free-trading-calculators-heres-what-i-learned-g2n https://dev.to/foysalmostafa/i-built-53-free-trading-calculators-heres-what-i-learned-g2n <p>As a forex trader, I was constantly switching between different calculator tabs while managing trades. So I built TradeCalc — one site with every calculator a trader needs.</p> <h2> What it does </h2> <p>TradeCalc has 53 free calculators covering:</p> <ul> <li> <strong>Forex</strong> — Position size, pip value, profit/loss, margin, spread cost, swap</li> <li> <strong>Risk management</strong> — Risk/reward, Kelly criterion, risk of ruin, drawdown</li> <li> <strong>Prop firm</strong> — Trailing drawdown, daily loss limit, consistency rule, profit target</li> <li> <strong>Futures</strong> — Tick value, funding rate, roll cost, commission, liquidation price</li> <li> <strong>Crypto</strong> — Liquidation price, funding rate, crypto profit</li> <li> <strong>Stocks</strong> — Dividend yield, stock profit, CAGR</li> </ul> <h2> Tech stack </h2> <ul> <li>Next.js 16 (static export)</li> <li>TypeScript</li> <li>Tailwind CSS v4</li> <li>Deployed on Cloudflare Pages</li> </ul> <h2> What I learned </h2> <ol> <li> <strong>Static export is underrated</strong> — 53 pages, zero server costs</li> <li> <strong>SEO takes patience</strong> — structured data and semantic HTML matter more than tricks</li> <li> <strong>Traders want simple</strong> — no sign-up, no ads, just fast math</li> </ol> <h2> Try it </h2> <p>👉 <a href="https://tradecalcapp.com" rel="noopener noreferrer">https://tradecalcapp.com</a></p> <p>Would love feedback — what calculators are missing?</p> webdev javascript beginners productivity Foysal Mostafa Mon, 03 Aug 2026 16:29:14 +0000 https://dev.to/foysalmostafa/i-built-a-free-text-case-converter-camelcase-snakecase-kebab-case-and-8-more-5139 https://dev.to/foysalmostafa/i-built-a-free-text-case-converter-camelcase-snakecase-kebab-case-and-8-more-5139 <p>As a developer, I constantly find myself needing to convert <br> variable names between different case formats.</p> <p>Copying text, opening a separate tool, converting, copying <br> back — it gets tedious fast.</p> <p>So I built <strong>TextCaseConverters.com</strong> — a free online tool <br> that handles 11 case formats instantly.</p> <h2> What it supports </h2> <ul> <li>UPPERCASE / lowercase</li> <li>Title Case / Sentence case</li> <li>camelCase / PascalCase</li> <li>snake_case / kebab-case</li> <li>CONSTANT_CASE</li> <li>aLtErNaTiNg CaSe</li> <li>Reverse Text</li> </ul> <h2> How it works </h2> <p>Everything runs in your browser using JavaScript. Your text <br> never leaves your device — no server calls, no storage.</p> <h2> Tech stack </h2> <ul> <li>Next.js 16 (static export)</li> <li>TypeScript</li> <li>Tailwind CSS v4</li> <li>Hosted on Cloudflare Pages</li> </ul> <h2> Try it </h2> <p>👉 <a href="https://textcaseconverters.com" rel="noopener noreferrer">textcaseconverters.com</a></p> <p>It's completely free, no signup required. Would love your <br> feedback on what formats to add next!</p> webdev javascript productivity opensource