Question 1

What functions does the scientific calculator support?

Accepted Answer

Our scientific calculator supports basic operations (+, -, ×, ÷), trigonometric functions (sin, cos, tan), logarithms (log, ln), exponential functions (exp, xʸ), powers and roots (x², x³, √, ³√), constants (π, e), parentheses for order of operations, and memory functions (MC, MR, M+, M-).

Question 2

What is the difference between DEG and RAD mode?

Accepted Answer

DEG (degree) mode interprets angles in degrees (0-360°), while RAD (radian) mode uses radians (0-2π). For example, sin(90) in DEG mode equals 1, but sin(90) in RAD mode equals approximately 0.894. Most everyday calculations use degrees, while advanced mathematics and physics often use radians.

Question 3

How do I use the memory functions?

Accepted Answer

Memory functions let you store and recall values: MC (Memory Clear) resets memory to 0, MR (Memory Recall) displays the stored value, M+ adds the current display to memory, and M- subtracts the current display from memory. This is useful for complex calculations where you need to temporarily store intermediate results.

Question 4

Can I use my keyboard with the calculator?

Accepted Answer

Yes! The calculator supports full keyboard input: numbers (0-9), operators (+, -, *, /), parentheses, decimal point (.), Enter or = to calculate, Backspace to delete, C to clear display, and Escape for all clear. This makes calculations faster and more convenient than clicking buttons.

Question 5

What is the order of operations?

Accepted Answer

The calculator follows standard mathematical order of operations (PEMDAS/BODMAS): Parentheses first, then Exponents (powers), then Multiplication and Division (left to right), then Addition and Subtraction (left to right). For example, 2+3×4 equals 14, not 20, because multiplication happens before addition.

Question 6

How accurate are the calculations?

Accepted Answer

The calculator uses JavaScript's built-in Math functions, which provide double-precision floating-point arithmetic (about 15-17 significant digits). This is sufficient for most scientific and engineering calculations. Results are displayed with up to 10 decimal places, with trailing zeros removed for cleaner display.

Quick Reference

⌨️ Keyboard Shortcuts

Free Online Scientific Calculator

Key Features:

Frequently Asked Questions