The world's most trusted, privacy-first calculator platform.
Free forever, no ads, no tracking.
Financial tools should be free, private, and accessible to everyone.
No charges, subscriptions, or premium features. Everything is free, forever.
Zero tracking, no data collection. Your calculations stay on your device.
Built on Cloudflare's edge network for instant calculations worldwide.
Web, iOS, Android—same powerful calculators, same privacy guarantee.
Access over 75+ calculators covering math, finance, fitness, engineering, and more.
Most "free" calculator sites are riddled with ads and trackers. We don't show ads. We don't track you. We don't sell anything.
We don't collect anything. Your calculations are stored locally in your browser—we literally can't see them.
Built with Next.js and Cloudflare Workers for speed. Native apps coming soon for iOS and Android.
Privacy-first AI chatbot helps you find the right calculator. No permanent storage.
Calculate in 11 major currencies (USD, EUR, GBP, JPY, etc) with auto-formatting.
Compare multiple calculations side-by-side. All saved locally.
Interactive charts and amortization schedules to visualize your data.
Install as a PWA and use most calculators without internet.
Optional client-side AES-256 encryption for sensitive data.
Join thousands of users who trust The Abacus for their daily calculations.
AI assistant for calculator discovery only