Casio fx-115ES PLUS Scientific Calculator


Casio Scientific Calculator FX-115ES PLUS with Natural Textbook Display

Casio’s latest and most advanced scientific/engineering calculator, Casio scientific calculator FX-115ES PLUS features new Natural Textbook Display and improved math functionality. FX-115ES PLUS has been designed to be the perfect choice for high school and college students learning General Math, Trigonometry, Statistics, Algebra I and II, Calculus, Engineering, Physics.

  • Natural textbook display shows expressions and results exactly as they appear in the textbook
  • Over 280 functions, including fractions, statistics, complex number calculations, base arithmetic, linear regression, standard deviation, computer science, and polar-rectangular conversions
  • List-Based STAT Data Editor
  • Table Function
  • Matrix and Vector Calculations
  • 40 Metric Conversions
  • Multi-replay function allows you to backtrack step-by-step through calculations, where you can edit expressions and recalculate answers

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Easy To Use Casio Scientific Calculator FX-115ES PLUS

Casio's most advanced scientific calculator to date, has been designed and engineered for easy operation at any level. The Natural Display and enhanced features like displaying root forms of equations, finding derivatives, product notation templates, and advanced inequality functionality, makes the FX-115ES PLUS extremely versatile and the perfect choice for high school and college students alike.

Hardware Features

The FX-115ES PLUS calculator is intuitive and easy to use as you progress through your coursework. It has two-way power, "Solar Plus with Battery Back-up", so you're always ready!

Large Display

Offers a large, multi-line display that allows for important multi-replay functionality.

Exam Allowance

The Casio scientific calculator FX-115ES PLUS is permitted for use on the PSAT/NMSQT, SAT and ACT college entrance exams, AP tests, and NCEES exams.

Suggested Courses

The FX-115ES PLUS scientific calculator is designed to support all users in the following courses:

  • All General Mathematics courses
  • Pre-Algebra
  • Algebra I & II
  • Statistics
  • Pre-Calculus
  • Trignonmetry
  • Chemistry
  • Physics
  • Engineering


  • Number of display digits: 10
  • 40 metric conversions/40 scientific constants, comes with slide-on hard case
  • Display notation: Standard scientific, display type: Natural textbook
  • Memory: 6 (constant)
  • Display angle: Fixed
  • Protective cover: Hard case
  • Square root key
  • Fraction calculations, fraction/decimal conversions, decimal function, metric conversion, complex number calculations, equation editor, hyperbolic functions, linear regression, trig/log functions, variable regression, variable statistics
  • Higher mathematical functions: Trigonometry
  • Fully featured with 417 built-in functions, natural textbook display shows formula and results exactly as they appear in the textbook, improved math functionality with standard deviation, multi-replay function, logarithm log and list-based STAT data editor
  • Fraction calculation, list based STAT data editor, logarithm log, standard deviation, multi replay function
  • 2-line natural textbook display shows formula and results exactly as they appear in the textbook
  • Designed for general math, calculus, pre-Algebra, biology, Algebra I and II, chemistry, geometry, physics, Trigonometry, engineering and statistics
  • Accurate 10-digit, 10+2 display and easy menu function
  • Includes complex number, matrix and vector calculations, plus solve and equation calculations
  • Table, fraction and multi-replay functions
  • List-based STAT Data Editor
  • 1 independent an 6 constant memories
  • Solar Plus feature protects memory in any lighting
  • Slide-on hard case
  • 2-Line Dislay shows formulas and results simultaneously
  • Intuitive Functions, Improved math functionality, Natural Textbook Display
  • Prime Number Factorization, Reocurring Decimal, Remainder Calculation
  • Greatest Common Divisor, Least Common Multiple, Metric Conversion
  • High School & College Level. Advanced Scientififc Calculator for General Math, Trigonometry, Statistics Algebra I and II, Calculaus, Engineering, Physics
  • Dimensions: 3.15"H x 0.44"W x 6.38"L
  • Weight: 3.35 oz.
  • Power source: Solar and battery
  • Solar powered

User Reviews

User: Doug
User Rating: ★★★★
Good scientific calculator for high schooler, seems to be preferred to another similar older calculator. Gives the math & physics functions that my son needs for 11th grade classes and at home too.


User: CJ
User Rating: ★★★★★
This is the best scientific calculator you'll find, which makes it perfect for the PE and FE exams. This is really capable of doing anything that you need it to do.
You can go back through your calculator using the arrow buttons and correct any mistakes that you might've made, which is a big help.
It has built in conversions on it.
There's a mode allowing you to convert between base 2, 8, 10, 16 easily.
Can solve linear equations and linear systems.
Gives exact answers. You can switch the answer format to decimal/fraction with the push of a button
Matrix inversion!
Recommended, casio scientific calculator fx-115es plus


User: HARRY P.
User Rating: ★★★★
A lot of power for the money. This nice little machine is fairly well loaded with most any type of scientific calculation tools you would probably need. It has a lot of features you won't find on more expensive models. It is light and shirt pocket small with its slide case. It's a good buy for students or anyone who needs to use any advanced math in their job.


User: S. Gomez
User Rating: ★★★★★
Really good calculator for the price. If you don't want to spent more money on a calculator this casio scientific calculator fx-115es plus is perfect for everything that youll need on a 90{490ede0002b08415e87ccfeefe6774198f39eeaaf2837a3b8bd3ca5866846f85} regular day/study task day. Really easy to use to.


User: Carmen L.
User Rating: ★★★★★
The best and most affordable calculator ever! This will get you through college math, pre-calc and stats! You won't even need to get your hands on any other graphing calculator!


User Rating: ★★★★
Canon scientific calculator fx-115es plus, definitely an upgrade from my vintage Casio FX-115. The capabilities are remarkable supports advanced functions, exponential function displays all the equation and solutions. Handy display inside the calculator cover for simple equations. Not a graphing calculator. Inexpensive usage can be used for matrices and vectors.


User: beth l.
User Rating: ★★★★
I bought for my class to use for the regents. It is good for students who don't know how to simplify radicals or need the exact values of the special angles.


User: Ellie in Chicagoon June 23, 2017
User Rating: ★★★★★
This has been a great calculator for use in my beginning level college chemistry class. I have 3 more chemistry classes to take after this one and I am grateful to have it for the rest of my courses too. It is much easier to use than my old TI 83 and it is allowed on exams and in exam centers, unlike the programable calculators. It does everything I need so far, and more. Great quality!