Scientific Calculator
A full scientific calculator with trigonometric functions, logarithms, exponents, and mathematical constants — all running in your browser.
Angle:
0
Notes
How to Use
- Choose DEG (degrees) or RAD (radians) for trigonometric calculations.
- Enter a number, then press a function button (sin, cos, √, etc.) to apply it instantly.
- Use + − × ÷ for standard arithmetic operations.
- Use xⁿ to raise a number to a power: enter the base, press xⁿ, enter the exponent, press =.
Function Reference
| Button | Function | Example (DEG) |
|---|---|---|
| sin | Sine of the displayed angle | sin(30) = 0.5 |
| cos | Cosine of the displayed angle | cos(60) = 0.5 |
| tan | Tangent of the displayed angle | tan(45) = 1 |
| asin | Inverse sine (arcsin) → returns angle | asin(0.5) = 30° |
| acos | Inverse cosine (arccos) → returns angle | acos(0.5) = 60° |
| atan | Inverse tangent (arctan) → returns angle | atan(1) = 45° |
| √ | Square root | √(16) = 4 |
| x² | Square the current number | 5 x² = 25 |
| xⁿ | Raise to a power: enter base, xⁿ, exponent, = | 2 xⁿ 8 = 256 |
| log | Base-10 logarithm | log(1000) = 3 |
| ln | Natural logarithm (base e) | ln(e) = 1 |
| 1/x | Reciprocal of the current number | 1/x of 4 = 0.25 |
| π | Insert π ≈ 3.14159265 | — |
| e | Insert e ≈ 2.71828182 | — |
Trig functions (sin, cos, tan, asin, acos, atan) use the DEG/RAD setting at the top. Switch to RAD before entering values in radians.
Frequently Asked Questions
When should I use DEG vs RAD?
Use DEG (degrees) for everyday angles — a right angle is 90°, a full circle is 360°. Use RAD (radians) for calculus and physics — a right angle is π/2 ≈ 1.5708 rad, a full circle is 2π rad.
How do I calculate sin(45°)?
Make sure DEG is selected, type 45, then press sin. Result: 0.7071067812.
How do I raise a number to a power?
Enter the base (e.g. 2), press xⁿ, enter the exponent (e.g. 10), then press =. Result: 1024.
What is log vs ln?
log is the base-10 logarithm (log₁₀). ln is the natural logarithm (base e ≈ 2.718). For example: log(100) = 2, ln(100) ≈ 4.6052.
How do I calculate √(2)?
Type 2, then press √. Result: 1.414213562.