The latest articles on DEV Community by Waseem Shoukat (@waseem_shoukat_3eb4c5a2c8). https://dev.to/waseem_shoukat_3eb4c5a2c8 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3914250%2Fa5223758-75ba-4d0a-967a-4e1e7bd6985c.jpg https://dev.to/waseem_shoukat_3eb4c5a2c8 en Waseem Shoukat Tue, 05 May 2026 14:47:04 +0000 https://dev.to/waseem_shoukat_3eb4c5a2c8/i-built-50-free-online-calculators-heres-what-i-learned-2g4e https://dev.to/waseem_shoukat_3eb4c5a2c8/i-built-50-free-online-calculators-heres-what-i-learned-2g4e <p>I just launched CalcHub Pro, a free collection of 50+ online calculators. Here is what it includes and what I learned building it.</p> <h2> Live Site </h2> <p><a href="https://calchubpro.netlify.app" rel="noopener noreferrer">https://calchubpro.netlify.app</a></p> <h2> What Calculators Are Included </h2> <p>Finance: EMI loan calculator, mortgage, compound interest, ROI, break-even, profit and loss, savings goal, inflation, depreciation, VAT, and loan comparison.</p> <p>Health: BMI, daily calorie needs (TDEE), body fat percentage, sleep cycle calculator, water intake, calories burned, 1-rep max, and running pace.</p> <p>Math: Percentage, discount, GPA, area, volume, and quadratic equation solver.</p> <p>Science: Temperature converter, Ohm's law, force F=ma, density, pressure, and wavelength.</p> <p>Engineering: Electricity bill, concrete, beam deflection, pipe flow rate, and power calculator.</p> <p>Every day: Fuel cost, tip calculator, screen distance, pet age converter, and overtime pay.</p> <h2> Key Features </h2> <p>No sign-up required. All calculations run entirely in the browser — no data sent to any server. 50 individual calculator pages, 50 guide articles, and 100 blog posts. Mobile-friendly and fast.</p> <h2> Tech Stack </h2> <p>Pure HTML, CSS, and JavaScript. No frameworks, no backend. Hosted on Netlify. Every page has Schema.org structured data, canonical URLs, and unique meta descriptions.</p> <h2> Why I Built It </h2> <p>Most calculator sites block the actual tool with ads, require sign-ups, or load slowly. I wanted something clean, fast, and completely free.</p> <h2> What I Learned Building It </h2> <p>Each of the 50 calculator pages needs a unique title, meta description, and structured data schema. Internal linking between related calculators matters more than I expected for SEO. Getting a sitemap with 219 URLs properly submitted to Google Search Console is the most important technical step for a new site.</p> <p>The hardest part was not writing the calculator logic but making sure every page was discoverable. A new site with zero backlinks takes 6-12 weeks before Google starts showing impressions, regardless of how good the technical SEO is.</p> <h2> Try It </h2> <p><strong><a href="https://calchubpro.netlify.app" rel="noopener noreferrer">https://calchubpro.netlify.app</a></strong></p> <p>Feedback welcome. Especially interested in which calculators people find most useful and what is missing.</p> productivity showdev sideprojects webdev