About 2xKit
2xKit doubles your productivity with financial, business, health and math calculators plus PDF, image, link and QR tools, all in one fast, transparent, mobile-first place.
What 2xKit is
2xKit is a single place for the everyday calculations and file tasks people otherwise scatter across a dozen different websites: 250+ calculators covering finance, health, construction, math and science, plus 80+ PDF, image, link/QR, audio, video and developer tools. Most of it runs directly in your browser, works instantly with no account, and is free to use.
Why it was built
Most single-purpose calculator or converter sites are cluttered with ads, interstitials and unnecessary uploads for something that could just run locally in a browser tab. 2xKit exists to do the opposite: fast, transparent tools that respect your time and your data, consolidated in one place instead of a dozen bookmarks.
Privacy-first by default
Wherever the underlying task allows it, processing happens on your device, not on a server. File-based tools (PDF, image, audio, video) are built this way by default; the specific privacy behavior of any individual tool is documented on that tool’s own page. See our Security & Privacy page for the full breakdown.
Accuracy philosophy
Calculators show their formula and the assumptions behind it rather than presenting a number as unquestionable. See Methodology for how formulas are sourced, versioned and reviewed.
Who operates 2xKit
2xKit is operated by CloudBrain, based in India. For questions, see Contact.