Determine the primary purpose of the calculator – whether it's for general education, engineering, scientific research, or specific exams like SAT or ACT.
Look for essential functions such as basic arithmetic operations, scientific notation, trigonometric functions, logarithmic functions, and statistical calculations.
Ensure a smooth calculator shopping experience by considering factors like display clarity, crucial for easy reading during long calculations or in dimly lit environments.
Consider the size and portability based on where and how you intend to use the calculator – in classrooms, laboratories, or on the go.
Check the battery life expectancy and whether it uses replaceable batteries or rechargeable ones, ensuring uninterrupted usage when needed.
Evaluate the user interface for ease of navigation and inputting complex equations, ensuring efficient and error-free calculations.