Scientific Calculator
Free online scientific calculator with trigonometry, logarithms, powers, roots, and memory functions.
A full-featured scientific calculator with sin, cos, tan, log, ln, powers, roots, factorials, and more. Supports keyboard input and DEG/RAD modes.
Tip: Use your keyboard to type expressions. Press Enter to evaluate.
Frequently Asked Questions
What is a scientific calculator?
A scientific calculator is an advanced calculator that can perform operations beyond basic arithmetic, including trigonometric functions (sin, cos, tan), logarithms (log, ln), exponents, roots, factorials, and more. It follows proper order of operations (PEMDAS/BODMAS).
What is the difference between DEG and RAD mode?
DEG (degrees) and RAD (radians) determine how angles are measured for trigonometric functions. In DEG mode, a full circle is 360 degrees. In RAD mode, a full circle is 2π radians (approximately 6.283). For example, sin(90) = 1 in DEG mode, while sin(π/2) = 1 in RAD mode. DEG mode is more common in everyday use.
How do I calculate powers and roots?
Use x² for squaring, x³ for cubing, or xʸ for any power. For roots, use √ for square root, ³√ for cube root. You can also type expressions like 2^10 (= 1024) or sqrt(144) (= 12) using your keyboard.
Does this calculator support order of operations?
Yes. This calculator follows standard mathematical order of operations (PEMDAS): Parentheses first, then Exponents, then Multiplication and Division (left to right), then Addition and Subtraction (left to right). For example, 2 + 3 × 4 = 14, not 20.