HP 35s scientific calculator acquire the professional performance from the ultimate RPN scientific programmable calculator. Switch between RPN and algebraic entry-system logic at any time. The HP 35s features a two-line display, and the powerful HP Solve application.

Ultimate pocket size performer

• Professionals and college students have the flexibility no other scientific calculator can offer with the choice of RPN or algebraic entry-system logic.
• Completely programmable—work more efficiently with keystroke programming
• Handle the heaviest workloads with ease using 30 KB of memory plus 800+ independent storage registers
• Store an equation then use again to solve any variable using HP Solve or use 100 built-in functions 

Reliable performance and accurate results

The HP 35s delivers with a large 2-line alpha numeric display with adjustable contrast, raised edges to protect the keys, and a robust library of built-in functions and constants.

• Large 2-line display with adjustable contrast to easily view entries, results, menus and prompts
•  Simplify physics with 42 built-in physical constants,plus a complete library of unit conversions
• Get accurate results with edit, undo, delete capability
• Enjoy a compact size and protective raised edges that are designed for the mobile professional

Power and functionality in one Save time with an impressive array of programmable scientific functions.

• Use strong statistics functions for single and two-variable statistics, linear regression and more
• Use base-n functions for binary, octal, decimal and hexadecimal number calculation and conversion
• Perform operations on complex numbers, calculate logarithms, exponentials, inverse functions and more
• Take advantage of a powerful fraction mode plus fraction-to-decimal conversion