Our aim is to provide the ultimate reference and support for HP calculators, new and old, in Europe. Please help us to improve the site with your comments to sales@thecalculatorstore.com

All our new calculators are Official European product, with full 2-years HP-Europe guarantee.

Complete HP41CL (Originalbox: Serial Interface + cable + Time module)

HP41CL with the latest version of Systemyde circuit

650.00 *
In stock

New HP41c side cover

Product no.: Side Cover

HP41c side cover.

8.00 *
In stock

HP Prime

Product no.: HP Prime


New version HP-PRIME G2/B1S (2AP18AA)A !!  

HP Prime is the first color touch screens in the industry that today’s gadget savvy students can easily interact with.  

We are currently shipping this model all around Europe. This version is approximately twice as fast than the previous version

135.00 *
Old price 159.90 €

New HP41c Lower Post Repair Kit

Product no.: Lower Post Repair Kit

Set of pieces needed to repair successfully the lower posts of HP41C, 41CV and 41CX full nut calculators, including zebra connectors, lower post part, and keyboard support for clothes' pegs to protect the keyboard

55.00 *
Old price 62.00 €

New Zebra connectors for HP41C repair

Product no.: zebra pair

This piece is for repair of HP41c full nut calculator, substituting the damaged or corroded zebra connector that links the main board with the processor circuit. Pair

12.00 *
In stock

New HP 39GII

Product no.: NW249AA#ABA

Now shipping!!

The newest calculator in the HP graphical stable. Programmed from scratch in native ARM code, and with a 127 x 256 pixels screen with gray levels, it is much faster than previous HP calculators and also than the competition. The solid feel makes it an ideal calculator for school, in particular for those countries that do not allow CAS devices in class.

60.00 *
Old price 69.90 €
In stock

New Assembly kit for HP-41c battery bay and expansion ports (Assembled?: Assembled)

Parts for battery-back port module repair kit, or module assembled for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price for EU customers. Please choose option!

65.00 *
In stock

Piece for repair of back case of HP41C

Product no.: brokenback

1 Piece for repairing HP41c back cases.

This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way.


10.00 *

New HP 10bII+

Product no.: NW239AA

Get the answers you need quickly with the easy-to-learn and use HP10bll+ Financial Calculator. Whether you are a student or a practicing professional, the HP 10bll+ makes it easy to solve business, financial, statistical, and math calculations accurately and quickly, at a price that everyone can afford. The design packs plenty of features to make your work less complicated.

24.90 *

New zebra connector holder

Product no.: zebraholder

Zebra Holder to keep the elastomeric zebra connectors in the contacts between main board and processor circuit in the HP41c calculator family, full nut versions.

12.00 *
In stock

New Lower Post Repair part

Product no.: Lowpostrepair

Piece to repair HP41c full nut series lower screw posts

25.00 *

New HP41c Port cover - original

Product no.: Port cover

HP41c back port cover - original and used.

15.00 *
In stock

New Repair kit for HP-41c battery bay and expansion ports

Product no.: Flex-PCB

Repair kit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price.

38.00 *
In stock

Repaired HP41c back side

Product no.: HP41Cback

Repaired back side of HP41c. It can be used in case the original backside has the screw supports broken.

40.00 *
In stock

New WP34s Package (Overlay: 1 overlay)

Pack to create a WP34s, composed of an adhesive overlay and a HP30b, flashed with the latest stable version of the software created by Paul Dale and Walter Bonin. There is a 10 € contribution to the project for each calculator sold

We cannot guarantee the freedom of the software from bugs of any kind. However, we will re-flash it free of charge as many times as needed - shipping back and forth to be borne by the customer.

We are shipping now the version 3.0 with new overlays

80.00 *

New HP 17BII original - in box - USED

Product no.: HP 17bII in box

Original HP17bII calculator. Excellent state. Original cover, box and manual. Works with both Algebraic and RPN

sold out

100.00 *

HP 48GX in box

Product no.: HP 48GX in box

HP 48GX in box, nearly "as new", with sealed case and manuals

110.00 *

HP 17bII+ (Lenguaje: English-French)

Ideal for real estate, finance and business professionals, the HP 17bII+ features a simple keyboard, 250 menu-driven functions, RPN1 and algebraic entry-system logic. Its intelligent menu system allows you to concentrate on the problem, not on the calculator. 

After more than 20 years and 3 versions with different processors, its unsurpassed function set and user friendliness keeps the HP17bII in the to echelon of financial calculators.

89.90 *

New HP10s+

Product no.: NW276AA

User-friendly design, easy-to-read display and a wide range of algebraic, trigonometric, probability and statistics functions for your Math and Science classes


10.90 *

New New calcs collector's pack - HP10s+ & HP300s+

Product no.: New calcs collector pack
30.00 *

New Firmware Flashing service for HP30b, HP20b

Product no.: Flash

We offer the flashing of new firmware for the 10bII+, 12c+, 20b and 30b.

These calculators have a port that allows the user to flash a new firmware. For that, a special cable is needed.

18.15 *

HP 35s Scientific Calculator (Lenguaje: English-French)

Get professional performance from the ultimate RPN scientific programmable calculator. Switch between RPN1 and algebraic entry-system logic at any time. The HP 35s features a two-line display, and the powerful HP Solve2 application.

54.90 *

12c Financial Calculator (Lenguaje: English-French)

The HP-12C is HP's longest and best-selling product, in continual production since its introduction in 1981. Due to its simple operation for key financial calculations, the calculator long ago became the de facto standard among financial professionals – for example, most investment banks issue HP-12Cs to the members of each incoming class of its investment banking analysts and associates.

82.80 *
Currently unavailable

New HP41c Port cover - 3D

Product no.: Port cover 3D

HP41c back port cover - 3D, new - set of 4.

30.00 / 4 piece(s) *
In stock

New Upper Post Repair part

Product no.: UpperPostRepair

Piece to repair HP41c series upper screw posts (tested with both fullnut and halfnut versions)

25.00 *
In stock

* Prices include VAT