Project Overview
Calcopedia offers "Free Online Calculators for Finance, Math, Science & More," with fast, accurate results and detailed explanations, and no registration required.
Kafsols built the platform, its calculator engine and its SEO architecture.
The Challenge
Many calculator sites are slow, ad-heavy and give answers without explaining them. Users want quick results they can trust and understand, and the site needed to rank for hundreds of search queries.
Our Solution
We built a clean, fast calculator platform:
- Reusable calculator engine: new calculators are added quickly with consistent inputs, validation and results.
- Explanations and charts: step-by-step breakdowns and visualisations for complex results.
- Category navigation: finance, health, math, science, conversion and everyday tools.
- SEO-first pages: each calculator has its own optimised page and structured data.
Key Features
- Calculators across finance, health, math, science and conversions
- Step-by-step explanations
- Interactive charts
- Popular calculators and category browsing
- Search across all tools
- Fast, mobile-friendly interface
- No sign-up required
Tech Stack
React• Frontend
TypeScript• Language
Vite• Frontend
Recharts• Charts
Supabase (self-hosted)• Backend & content
Prerendering• SEO
Cloudflare• Edge & security
Screenshots
Our Process
- Information architecture: categories and URL structure for search.
- Engine: shared components for inputs, formulas and results.
- Content: explanations and FAQs for each calculator.
- Performance and SEO: prerendering, sitemaps and structured data.
Results & Impact
Calcopedia delivers a growing library of fast, explained calculators, structured to be found in search and easy to extend with new tools.