X123 Calculator with memory

Discover X123, your calculating companion. Free and super-easy to use, X123 handles basic and scientific math, supports time calculations with a NOW key, and offers a memory function for quick reuse.

In landscape mode you get two keyboards for efficiency and you can personalize the experience with advanced customization—rearranging keys, renaming, rounding, language, and writing standards. Dark mode helps for low-light work and daily use.