From Zero to 570 SEO Pages — How I Built a Calculator Tool Empire

I built a website with 570 free calculator tools — all statically generated, SEO-optimized, and deployed for $0/month. Here's how I did it and what I learned. The Idea I noticed something while doing keyword research: there are thousands of "calculator" and "simulator" queries with decent search volume, but most existing tools are either: Buried inside bloated articles Covered in ads with terrible UX Outdated or broken What if I built a clean, fast, purpose-built calculator for every single one of those queries? The Stack Layer Technology Cost Framework Next.js (SSG) Free Hosting Vercel Free tier SEO JSON-LD structured data Free Design Tailwind CSS Free AI assist Claude API ~$5/month Total monthly cost: ~$5 (mostly AI-assisted code generation for calculator logic). The Process Step 1: Keyword Research at Scale I scraped Google Suggest for patterns like: {topic} calculator {topic} simulator {topic} converter This gave me 1,000+ keyword candidates. I filtered for: Monthly search volume &