Precision Meets Performance
The FC-991ES PLUS offers the exact same features as the FX-991 PLUS calculator and is your ultimate partner for tackling complex calculations with ease. Featuring 417 functions, including calculus, matrix, and statistical capabilities, this advanced scientific calculator is ideal for students, engineers, and science professionals. With its Natural Textbook Display, mathematical expressions like fractions and roots appear just as they do in textbooks, simplifying your learning and problem-solving experience.

All-in-One Study Solution
This bundle includes not just a high-performance scientific calculator but also a sleek notebook and premium pen for all your note-taking needs. Perfect for classrooms, labs, or offices, it ensures you're fully equipped for any task. Whether you're solving equations or sketching out your ideas, this set keeps everything you need in one place.

Built to Excel, Built to Last
Crafted from premium ABS plastic, this non-programmable calculator is compact yet rugged. It's compliant with international standards like CE, giving you peace of mind with every use. Whether you're calculating integrals or analyzing statistical data, the 991ES PLUS delivers accuracy and performance you can trust.

Enhanced Learning Made Simple
Simplify your studies and boost productivity with the multi-replay function, allowing you to review and reuse previous calculations effortlessly. From physics constants to angle conversions (degrees, radians, gradians), this calculator supports every aspect of advanced math and science. Paired with the notebook and pen, it's the ultimate toolkit for achieving academic and professional success.

417 Functions
Equation Solver
9 Variable Memories
Trigonometric and Inverse Trigonometric Function:
Hyperbolic and Inverse Hyperbolic Functions
Exponential/ Logarithmic
Power Functions
Fraction Calculations
Sexagesimal Functions
Base-n Calculations
40 Scientific Constants
40 Metric Conversions
Algebra
Calculation with square/pi symbol
Including simplifying radicals
Simultaneous Equations
Polynomial Equations
Table Function
Matrix/ Vector Calculations
Complex Number Calculations
Geometry
Coordinate Conversion
Probability
Permutation and Combination
Statistics
Statistical Calculations (Standard Deviation)
Statistical Calculations (Regression Analysis)