fx-115ES Plus 2nd Edition Advanced Scientific Calculator
#3
Casio

Casio fx-115ES Plus 2nd Edition Advanced Scientific Calculator

Rating

Model: FX-115ESPLS2
$16.99(incl. tax)Amazon price as of 2025-09-29
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Product Overview

The Casio fx-115ES Plus 2nd Edition is an advanced scientific calculator featuring Natural Textbook Display, which shows fractions and expressions as they appear in textbooks. It has over 280 functions, including complex number calculations, linear regression, and matrix operations. It is suitable for high school and college students in math, science, engineering, and statistics. The calculator has a solar panel with battery backup and a multi-replay function for easy error checking.

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Product Specifications

Display Digits
16digits
Display Type
LCD
Power Source
Solar Powered
Number of Functions
280
Memory
9locations
Fractions
Yes
Complex Numbers
Yes
Statistics Functions
Yes
Regression Analysis
Yes
Unit Conversions
YesYes

Size & Weight

Weight
3.68 ounces
Hight
9 inches
Width
5.5 inches
Depth
0.1 inches

Features

Equation Solver Function

The equation solver function allows users to solve complex equations directly on the calculator, saving time and reducing errors. This is particularly useful for algebraic problems and other mathematical tasks where manual manipulation can be cumbersome.

Matrix Calculation Function

The matrix calculation function enables users to perform operations on matrices, such as addition, subtraction, multiplication, and finding determinants and inverses. This is beneficial for linear algebra calculations in engineering, physics, and computer graphics.

Complex Number Calculation Function

The complex number calculation function allows calculations involving complex numbers, including addition, subtraction, multiplication, division, and finding magnitudes and arguments. This simplifies calculations in electrical engineering, quantum mechanics, and other fields involving imaginary numbers.

Base-N Calculation Function

The calculator does not have a dedicated Base-N calculation function. While this function is useful for computer science and digital electronics, its absence does not significantly impact the calculator's overall utility for general scientific and engineering applications.

Statistical Calculation Function

The statistical calculation function enables users to perform statistical analysis, including calculating mean, standard deviation, variance, regression, and distributions. This is useful for statistics courses, data analysis, and research projects.

Unit Conversion Function

The unit conversion function allows users to easily convert between different units of measurement, such as length, mass, volume, and temperature. This saves time and reduces errors when working with different units in physics, chemistry, or engineering problems.

SHOPSTAFF Rating Score

#3
Ranked #3 out of 56 products in Category
4.6
Overall Rating

The Casio fx-115ES Plus 2nd Edition is a solid scientific calculator for students and professionals needing a wide range of functions at an affordable price. It lacks some advanced features found in higher-end models but offers excellent value for its cost. Expect several years of reliable use with proper care.

Display Type and Readability
4.5
The LCD display with Natural Textbook Display offers a clear and intuitive way to view expressions and results. The 4-line display allows for easy input and review of complex calculations, enhancing the overall user experience.
Functionality and Number of Built-in Functions
4.7
With over 280 functions, this calculator provides a comprehensive set of tools for various mathematical tasks. It includes advanced capabilities like complex number calculations, linear regression, and matrix operations, making it versatile for different applications.
Calculation Accuracy and Precision
4.6
The calculator delivers accurate results for a wide range of calculations. Its internal precision is suitable for most scientific and engineering applications, ensuring reliable outcomes for both simple and complex problems.
Ease of Use and Ergonomics
4.4
The calculator features a well-organized keyboard layout and intuitive menu navigation, making it easy to use for extended periods. The keys provide good tactile feedback, and the multi-replay function allows for easy error checking and correction.
Power Source and Battery Life
4.5
The combination of solar power and battery backup ensures reliable power and long battery life. The Solar Plus technology is energy-efficient, and the battery backup keeps the calculator working without interruption, making it suitable for various environments.
Durability and Build Quality
4.3
The calculator is made from sturdy materials and has a solid construction, making it durable enough to withstand everyday use. While it may not be as rugged as some higher-end models, it offers good reliability for its price point.
Manufacturer Reliability and Warranty
4.8
Casio is a reputable manufacturer known for producing reliable and accurate scientific calculators. The brand has a long track record of quality and customer support, providing peace of mind in case of any defects or malfunctions.
Cost Performance
4.7
The Casio fx-115ES Plus 2nd Edition offers excellent value for its price. It provides a comprehensive set of features and reliable performance, making it a worthwhile investment for students and professionals needing a versatile scientific calculator.

Brand & Manufacturer Details

Casio
From the brand Boost Your CuriosityVisit the Store

Key Highlights

  • Natural Textbook Display
  • Extensive Functionality
  • Solar Plus Power
  • Affordable Price

Considerations

  • Avoid dropping the calculator
  • Keep away from moisture
  • Replace battery when needed
  • Avoid direct sunlight for extended periods

Recommended For

  • High school students
  • College students
  • Engineers
  • Scientists
  • Math enthusiasts

Not Recommended For

  • Professionals requiring advanced graphing
  • Users needing programmable functions
  • none in particular

Suitable For

  • Classroom
  • Exams
  • Homework
  • Scientific Research

Not Suitable For

  • Advanced financial modeling
  • Complex engineering simulations
  • none in particular

Frequently Asked Questions (FAQ)

Q.Is this calculator suitable for engineering students?
A.Yes, according to staff confirmation, this calculator works perfectly for college engineering and is cheaper than a TI calculator while performing just as well. It's allowed for all exams and has a long-lasting battery.
Q.Can this calculator be used for complex calculations?
A.Yes, staff confirmation indicates this calculator includes advanced capabilities like complex number calculations, linear regression, summation, integration, permutations and combinations, polar-rectangular conversions, and matrix/vector operations.
Q.Is the display easy to read?
A.Staff confirmation notes the display is generally clear and easy to read. However, one staff member mentioned that visibility might be an issue due to smaller digits and less contrast compared to some other calculators, especially in varying lighting conditions. Consider the white model for better clarity.
Q.Is this calculator suitable for a Ph.D. student in clinical psychology?
A.According to staff confirmation, the Casio fx-115ESPLUS2 is an invaluable tool for a Ph.D. program in Clinical Psychology, adept at handling statistical analyses, complex algebraic expressions, and matrices. Its user-friendly interface and approved status in academic settings make it suitable for coursework and exams.
Q.Does the calculator have good battery life?
A.Yes, staff confirmation indicates the battery life is impressive and that it has a reliable power with energy-efficient Solar Plus technology and battery back-up to keep you working without interruption.

SHOPSTAFF Rating Ranking

#1

Casio

FX-991ESPLUS-2WDTV

$24.5(incl. tax)Amazon price as of 2025-09-29

Casio FX-991ES Plus-2nd Edition Scientific Calculator with Natural Textbook Display and 417 functions.

Display Digits10 + 2 digitsDisplay TypeLCD (dot-matrix)
Power SourceSolar & BatteryNumber of Functions417
Memory- locationsFractionsYes
Complex NumbersYesStatistics FunctionsYes
Regression Analysis-Unit Conversions-
Equation Solver FunctionMatrix Calculation FunctionComplex Number Calculation FunctionBase-N Calculation FunctionStatistical Calculation FunctionUnit Conversion Function
4.6Overall Rating
4.5Display Type and Readability
4.8Functionality and Number of Built-in Functions
4.7Calculation Accuracy and Precision
4.6Ease of Use and Ergonomics
4.5Power Source and Battery Life
4.6Durability and Build Quality
4.9Manufacturer Reliability and Warranty
4.4Cost Performance
#2

Casio

fx-991CW Advanced Scientific Calculator

$19.99(incl. tax)Amazon price as of 2025-09-29

Casio fx-991CW Advanced Scientific Calculator with High-Res 4-Tone Display and 540+ Functions.

Display Digits- digitsDisplay TypeHigh-Resolution 4-Tone
Power SourceSolar PoweredNumber of Functions540+
Memory9 locationsFractionsYes
Complex Numbers-Statistics FunctionsYes
Regression Analysis-Unit ConversionsYes
Equation Solver FunctionMatrix Calculation FunctionComplex Number Calculation FunctionBase-N Calculation FunctionStatistical Calculation FunctionUnit Conversion Function
4.6Overall Rating
4.5Display Type and Readability
4.8Functionality and Number of Built-in Functions
4.7Calculation Accuracy and Precision
4.4Ease of Use and Ergonomics
4.3Power Source and Battery Life
4.6Durability and Build Quality
4.9Manufacturer Reliability and Warranty
4.5Cost Performance
#3

Casio

fx-115ES Plus 2nd Edition Advanced Scientific Calculator

$16.99(incl. tax)Amazon price as of 2025-09-29

Casio fx-115ES Plus 2nd Edition: Advanced scientific calculator with Natural Textbook Display and 280+ functions.

Display Digits16 digitsDisplay TypeLCD
Power SourceSolar PoweredNumber of Functions280
Memory9 locationsFractionsYes
Complex NumbersYesStatistics FunctionsYes
Regression AnalysisYesUnit Conversions Yes
Equation Solver FunctionMatrix Calculation FunctionComplex Number Calculation FunctionBase-N Calculation FunctionStatistical Calculation FunctionUnit Conversion Function
4.6Overall Rating
4.5Display Type and Readability
4.7Functionality and Number of Built-in Functions
4.6Calculation Accuracy and Precision
4.4Ease of Use and Ergonomics
4.5Power Source and Battery Life
4.3Durability and Build Quality
4.8Manufacturer Reliability and Warranty
4.7Cost Performance
#4

Texas Instruments

TI-36X Pro Engineering/Scientific Calculator

$20(incl. tax)Amazon price as of 2025-09-24

TI-36X Pro: Engineering/Scientific calculator with MultiView display, ideal for high school through college.

Display Digits- digitsDisplay TypeLCD
Power SourceBattery PoweredNumber of Functions-
Memory- locationsFractionsYes
Complex NumbersNoStatistics FunctionsYes
Regression AnalysisYesUnit ConversionsYes
Equation Solver FunctionMatrix Calculation FunctionComplex Number Calculation FunctionBase-N Calculation FunctionStatistical Calculation FunctionUnit Conversion Function
4.5Overall Rating
4.5Display Type and Readability
4.3Functionality and Number of Built-in Functions
4.7Calculation Accuracy and Precision
4.4Ease of Use and Ergonomics
4.6Power Source and Battery Life
4.5Durability and Build Quality
4.8Manufacturer Reliability and Warranty
4.6Cost Performance
#5

Texas Instruments

TI-30XIIS Scientific Calculator

$21(incl. tax)Amazon price as of 2025-09-29

TI-30XIIS: A fundamental two-line scientific calculator for high school math and science with solar and battery power.

Display Digits12 digitsDisplay TypeLCD
Power SourceSolar & BatteryNumber of Functions-
Memory5 locationsFractionsYes
Complex NumbersNoStatistics FunctionsYes
Regression AnalysisYesUnit ConversionsYes
Equation Solver FunctionMatrix Calculation FunctionComplex Number Calculation FunctionBase-N Calculation FunctionStatistical Calculation FunctionUnit Conversion Function
4.5Overall Rating
4.5Display Type and Readability
4.0Functionality and Number of Built-in Functions
4.5Calculation Accuracy and Precision
4.3Ease of Use and Ergonomics
4.7Power Source and Battery Life
4.5Durability and Build Quality
4.8Manufacturer Reliability and Warranty
4.7Cost Performance