Casio fx-991ES PLUS Emulator | Free Online Scientific Calculator

CASIO

fx-991ES PLUS

NATURAL-U.P.A.M.

2nd edition

Math ▲

SHIFT

ALPHA

MODE

SETUP

SHIFTSOLVE=

CALC

x^-1

log□□

A^b/c

sin^-1

cos^-1

tan^-1

hyp

sin

cos

tan

STO

M+

ENG

()

nPr

nCr

x²

x³

√

INS

OFF

DEL

−

Pol

Ans

Mastering Scientific Calculations with Our Online Casio fx-991ES PLUS Emulator

Our free online Casio fx-991ES PLUS calculator emulator provides all the functionality of the physical calculator without the need to carry one around. Whether you're a student tackling complex equations, an engineer working on technical designs, or a professional needing quick calculations, this tool is perfect for you.

Key Features:

• Full scientific functions including trigonometric, logarithmic, and exponential calculations

• Memory functions for storing and recalling values

• Percentage calculations for financial and statistical work

• Complete emulation of the Casio fx-991ES PLUS interface

Why Use Our Online Calculator?

Unlike many online calculators that simplify the interface, we've faithfully recreated the exact experience of using a real Casio fx-991ES PLUS. This means you can practice with our emulator and be fully prepared when using the physical calculator for exams or professional work.

The calculator works on any device with a web browser - computers, tablets, and smartphones. No downloads or installations required, just visit our site and start calculating!

For Students

Perfect for algebra, calculus, statistics, and advanced mathematics courses. Great for homework help and exam preparation.

For Engineers

Essential engineering calculations, complex number operations, matrix calculations, and equation solving.

For Professionals

Financial calculations, statistical analysis, and scientific computations for various professional fields.

Comprehensive Scientific Calculator for All Your Mathematical Needs

Our Casio fx-991ES PLUS emulator is the perfect tool for students, engineers, scientists, and anyone needing advanced mathematical functions. This online scientific calculator replicates all the features of the popular physical calculator, providing a seamless experience for users familiar with the Casio fx-991ES PLUS model.

Advanced Mathematical Functions

This calculator emulator supports a wide range of mathematical operations including:

Trigonometric and hyperbolic functions (sin, cos, tan, sinh, cosh, tanh)
Inverse trigonometric functions (sin⁻¹, cos⁻¹, tan⁻¹)
Logarithmic functions (log, ln) and exponential calculations
Square roots, cube roots, and higher-order roots
Power functions (x², x³, x^y)
Fraction calculations and conversions
Permutations (nPr) and combinations (nCr)
Statistical calculations including standard deviation and regression
Matrix operations and vector calculations
Equation solving and complex number calculations

Perfect for Educational Use

Students at all levels can benefit from using our online Casio calculator emulator. Whether you're in high school tackling algebra and trigonometry, or in college studying calculus, engineering mathematics, or statistics, this tool provides all the functions you need. The interface matches the physical calculator, making it an excellent preparation tool for exams where specific calculator models are required.

Engineering and Scientific Applications

Engineers, physicists, and other professionals will find our online calculator indispensable for quick calculations. The ability to perform complex number operations, matrix calculations, and equation solving makes it suitable for a wide range of technical applications. The calculator's precision and advanced functions ensure accurate results for even the most complex computations.

Happy Calculation