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Item #:
44271349
Casio fx-991es Plus Scientific Calculator FX 991 ES – New & Sealed Ship to World Wide by Casio
Item #:
44271349
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What Stands Out
Versatile functions
The Casio fx-991ES Plus offers over 400 functions, including advanced calculations, making it ideal for students and professionals in mathematics, science, and engineering fields.
User-friendly interface
With an intuitive design and natural display, this calculator allows users to view formulas and equations as they appear in textbooks, enhancing understanding and usability.
Durability & portability
Compact and lightweight, the fx-991ES Plus is built to last and is easy to carry, making it an essential tool for exams, classes, and fieldwork.
Product Details
- Casio FX-991ES Plus Scientific Calculator featuring 417 functions for various math and science calculations
- Textbook display patterns for better comprehension of results
- High resolution dot matrix display for easy viewing
- Plastic keys with natural display and 10+2 digit display
- Integral and differential calculation modes for complex calculations
- Convenient features such as random integers, exponential calculations, and statistics
| Calculator Type | Engineering/Scientific |
| Power Source | Battery Powered |
| Screen Size | 20 Centimeters |
| Number of Batteries | 1 LR44 batteries require. |
| Display Type | LCD |
| Color | silver |
| Enclosure Material | Plastic |
| Brand | Casio |
| UPC | 610395200024 |
| Manufacturer | Calculator |
| Mfr Part Number | FX-991 ES PLUS |
| Model Number | Casio FX 991 ES PLUS |
| Item Weight | 0.29 pounds (130 grams) |
Who Should Buy?
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students
Ideal for high school and university students for math and science courses that require complex calculations.
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Engineers
Useful for engineering professionals needing precise calculations for designs, analysis, and problem-solving tasks.
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Researchers
Beneficial for researchers who perform statistical analysis and require advanced mathematical functions during data evaluation.
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Casual Users
Not the best option for occasional users who only need basic arithmetic functions on a simple calculator.
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Young children
Inappropriate for young children who may find the advanced features complex and unnecessary for their needs.
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Budget Shoppers
May not suit those looking for the cheapest calculator options, as it is priced higher than basic models.
Product Description
Casio fx-991es Plus Scientific Calculator FX 991 ES – New & Sealed Ship to World Wide by Casio
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Product Buying Guide
The Casio FX 991 ES Plus Scientific Calculator is a versatile and efficient tool designed to simplify complex mathematical calculations. Whether you're a student, engineer, or professional, this calculator offers a wide range of functions and features to aid in various mathematical tasks.
Product Specifications
- Crafted with 417 functions for comprehensive mathematical calculations
- Textbook display pattern for improved viewing and comprehension of results
- List format for easy access to data
- Multi-replay function for quick recall and editing of executed formulas
- 10-digit mantissa and 2-digit exponential display for clear representation of large numbers
- High-resolution screen with dot matrix display for graph presentations
- New equation mode for complex number calculations
- Random integer feature for generating integers within specified values
- Additional features include plastic keys, natural V.P.A.M. display, numerical integral and differential calculus, statistics calculations with complex numbers, and more
Key Features
- Comprehensive set of 417 functions for versatile mathematical calculations
- Textbook display pattern and list format for improved viewing and easy data access
- Multi-replay function for quick recall and editing of formulas
- High-resolution screen with dot matrix display for clear graph presentations
- New equation mode for complex number calculations and random integer feature for added versatility
Usage Scenarios
- Ideal for students, engineers, professionals, and anyone requiring advanced mathematical calculations
- Suitable for conducting statistics, logistics, equations, and matrix operations
- Useful for standard functions, permutation and combination calculations, and statistical analysis
Usage Scenarios
Competitors' scientific calculators with similar functionality and features
Some User Review
- Users appreciate the comprehensive set of 417 functions that cover a wide range of mathematical operations
- The textbook display pattern and list format have been praised for enhancing visibility and data accessibility
- The high-resolution screen and dot matrix display receive positive feedback for clear and visually appealing graph presentations
- The multi-replay function has been beneficial in quickly recalling and editing previously executed formulas
Competitors
Analysis of the competitive pricing of the Casio FX 991 ES Plus Scientific Calculator compared to similar models
Buying Considerations
- Consider your specific mathematical requirements and whether the calculator's 417 functions cover your needs
- Assess the importance of features such as textbook display pattern, multi-replay function, and random integer generation based on your usage scenarios
- Compare the pricing and availability with competitors to make an informed purchasing decision
Conclusion
The Casio FX 991 ES Plus Scientific Calculator is a reliable and feature-rich tool suitable for various mathematical tasks, offering a comprehensive set of functions, clear display capabilities, and efficient usability. Whether for educational, professional, or personal use, this calculator provides the versatility and functionality required for advanced mathematical calculations.
View LessThe Casio FX 991 ES Plus Scientific Calculator is a versatile and efficient tool designed to simplify complex mathematical calculations. Whether you're a student, engineer, or professional, this calculator offers a wide range of functions and features to aid in various mathematical tasks. Continue Reading
Customer Questions & Answers
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Question:
How many functions does this calculator have?
Answer: This calculator has 417 functions. -
Question:
Does it have a high resolution screen?
Answer: Yes, it has a high resolution Dot Matrix Display. -
Question:
Can it handle complex number calculations?
Answer: Yes, it has various complex number calculation functions.
Scientific Casio FX 991 ES PLUS Editorial Review
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12 June 2026 · via Trustpilot
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Features & Benefits
- 417 functions for math and science calculations
- Textbook display patterns
- Data and data list format for easy understanding
- Multi-Replay function for quick recall and execution
- High resolution Dot Matrix Display
- Various complex number calculation functions
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