What is a Scientific Calculator?
A scientific calculator is an advanced type of calculator that handles a wide range of mathematical operations beyond basic arithmetic. Unlike a standard calculator, a scientific calculator includes functions for trigonometry, logarithms, exponentials, roots, factorials, and memory storage — making it essential for students, engineers, and scientists.
Our free online scientific calculator replicates the functionality of a physical scientific calculator and runs entirely in your browser, with no download or installation required.
Key Functions Available
- Trigonometric functions: sin, cos, tan and their inverses (arcsin, arccos, arctan)
- Logarithmic functions: Common logarithm (log₁₀) and natural logarithm (ln)
- Exponentials: e^x, 10^x, x², x³, xⁿ
- Roots: Square root (√), cube root (∛)
- Constants: π (pi ≈ 3.14159…), e (Euler's number ≈ 2.71828…)
- Other: Factorial (n!), percentage (%), reciprocal (1/x), parentheses
- Angle modes: Degrees (DEG) and Radians (RAD)
- Memory: MS (store), MR (recall), MC (clear)
How to Use This Calculator
Click the buttons on the calculator or use your keyboard to enter numbers and operations. Press = or Enter to compute. Use AC to clear everything, or ⌫ to delete the last character.
Degree vs. Radian Mode
When using trigonometric functions, select the appropriate angle mode:
- DEG (Degrees): Most common in everyday use. A full circle = 360°.
- RAD (Radians): Used in calculus and advanced math. A full circle = 2π ≈ 6.2832 radians.
Example: sin(90°) = 1 in DEG mode. In RAD mode, sin(π/2) = 1.
Common Trigonometry Values
| Angle (°) | Angle (rad) | sin | cos | tan |
|---|---|---|---|---|
| 0° | 0 | 0 | 1 | 0 |
| 30° | π/6 | 0.5 | 0.866 | 0.577 |
| 45° | π/4 | 0.707 | 0.707 | 1 |
| 60° | π/3 | 0.866 | 0.5 | 1.732 |
| 90° | π/2 | 1 | 0 | undefined |
| 180° | π | 0 | −1 | 0 |