HP-15C Scientific Calculator

The HP-15C Scientific Calculator is a legendary programmable scientific calculator renowned for its Reverse Polish Notation (RPN) entry, compact form factor, and exceptional computational power. Ideal for engineers, scientists, mathematicians, and students, the HP-15C handles complex numbers, matrix operations, numerical integration, and root-solving with ease. Revered for its durability and reliability, the HP-15C continues to be a favorite for professionals who demand precision, portability, and long battery life in a timeless design.

Product Features: 

• RPN (Reverse Polish Notation) Entry – Increases calculation efficiency for experienced users
• Complex Number Support – Perform operations using real and imaginary numbers
• Matrix Functions – Store, manipulate, and solve matrix operations (up to 64 elements)
• Programmable Memory – Save custom routines and automate repeated calculations
• Root Solver & Numerical Integration – Advanced capabilities for higher-level math
• Floating Point Arithmetic – Full support for scientific notation and precision
• Compact Horizontal Layout – Slim and durable design fits easily in a pocket or bag
• Long Battery Life – Efficient power usage with extended performance
• Instant-On Functionality – Recalls the last session instantly
• Iconic HP Build Quality – Built for decades of reliable use

Note: This is a refurbished item that comes with a 90-day exchange warranty. This has been serviced and calibrated to work as new. Servicing can include replacement of belts, gears, capacitors, cleaning and re-lubricating all internal mechanisms. Porter Electronics prides itself on only acquiring top quality used products that show minimal signs of use. Buying from Porter Electronics you should expect a very nice, refurbished unit. We do offer an extended warranty that can be purchased during checkout and will apply at the end of our already 90-day warranty

Porter Electronics also offers free tech support for those needing extra help. We offer a free digital download of the manual for this on this page in the “Downloads” tab. If you are unable to locate the link, just use our Contact Us page to request one.