Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Calculators
Origin	-
Brand	Casio
Model Number	fx-999CN CW
Display Type	4-Color LCD with High Resolution
Power Source	Solar Panel + Button Battery (LR44)
Number of Functions	552+
Menu Language	Chinese, English, Japanese
Dimensions	16.5 x 7.7 x 1.1 cm
Weight	95 grams
Exam Approval	Approved for SAT, AP, PSAT/NMSQT, ACT, and IB exams
Warranty	1 Year Manufacturer Warranty

6 reviews

Anonymous

Mar 19, 2026

Rating: 5/5

Clear display is a game changer

As someone who wears glasses, the sharpness of this screen is incredible. No more squinting at tiny dots. The QR code feature to graph functions on my phone is also a really nice bonus for studying.

Anonymous

Mar 18, 2026

Rating: 5/5

Perfect for finance exams

I bought this specifically for my CFA prep. The financial calculation features are intuitive, and the battery life is excellent thanks to the solar assist. Highly recommend for any finance major.

Anonymous

Mar 10, 2026

Rating: 4/5

Solid performer with a learning curve

Transitioning from the fx-991EX was interesting. The icon menu is modern but requires memorizing locations for frequent functions. Once you learn it, though, it's very fast. Great value for the price.

Anonymous

Mar 09, 2026

Rating: 5/5

Essential for graduate entrance tests

Used this during my GRE preparation and the actual test. It is allowed in most standardized tests which is a huge plus. The statistical functions are easy to access and very reliable.

Anonymous

Mar 09, 2026

Rating: 4/5

Great for engineering students

Handles all my calculus and linear algebra problems effortlessly. The spreadsheet function is surprisingly robust. Only giving 4 stars because the manual could be more detailed on the new icon-based navigation.

Anonymous

Mar 06, 2026

Rating: 5/5

Best upgrade from the classic ES Plus

The new menu interface takes a little getting used to compared to the old models, but the high-resolution color screen makes reading complex matrices and graphs so much easier. The build quality feels premium and sturdy.

5 FAQ

Q: Is the menu language switchable to English?

A: Yes, the device supports multiple languages including English, Chinese, and Japanese. You can change the language setting easily through the initial setup or the settings menu.

Q: Is this calculator allowed on the SAT and ACT exams?

A: Yes, the Casio fx-999CN CW is approved for use on SAT, AP, PSAT/NMSQT, ACT, and IB examinations. However, always double-check with your specific testing center for the latest regulations.

Q: Does this model support complex number calculations in polar form?

A: Absolutely. The fx-999CN CW supports extensive complex number operations, including conversion between rectangular and polar forms, as well as arguments and conjugates.

Q: Can I replace the battery myself or do I need a screwdriver?

A: The calculator uses a standard LR44 button battery. You will need a small Phillips head screwdriver to open the back compartment, which is a common design for durability. Instructions are included in the user manual.

Q: How does the QR code function work?

A: You can input an equation into the calculator, generate a QR code on the screen, and scan it with the official Casio app on your smartphone or tablet to visualize the graph instantly.

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