How do I use scientific notation?

Scientific notation: number × 10^power. 5.23 × 10³ = 5,230. 3.2 × 10⁻⁴ = 0.00032. On calculators, enter as 5.23E3 or 5.23×10^3. Useful for very large (speed of light: 3×10⁸ m/s) or very small (electron mass: 9.1×10⁻³¹ kg) numbers.

What is the order of operations?

PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division (left to right), Addition and Subtraction (left to right). 2+3×4 = 2+12 = 14, not 20. Use parentheses to override: (2+3)×4 = 20.

How do I calculate logarithms?

log₁₀(x) asks "10 to what power equals x?" log₁₀(100) = 2 because 10² = 100. ln(x) is natural log (base e ≈ 2.718). log₂(x) is used in computing. Change of base: logₐ(x) = log(x)/log(a). Inverse: 10^(log x) = x.

What are common trigonometry functions?

Sin, cos, tan relate angles to sides in right triangles. SOH-CAH-TOA: sin = opposite/hypotenuse, cos = adjacent/hypotenuse, tan = opposite/adjacent. sin(90°) = 1, cos(0°) = 1, tan(45°) = 1. Ensure calculator is in correct mode (degrees vs radians).

What is the difference between degrees and radians?

Degrees: full circle = 360°. Radians: full circle = 2π (≈6.28). Convert: radians = degrees × π/180. 90° = π/2 radians. 180° = π radians. Most programming languages use radians. Check your calculator mode setting before trig calculations.

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Scientific Calculator

Scientific calculators handle advanced math: exponents (x^y), roots (√), logarithms (log, ln), trigonometry (sin, cos, tan). Order of operations: PEMDAS. Scientific notation: 5.23×10³ = 5230.

Scientific calculator with trigonometric functions, logarithms, powers, and more. Supports DEG/RAD modes and calculation history.

Calculator

Keyboard Shortcuts

Enter Calculate

Esc Clear

0-9 Numbers

+ - * / Operators

( ) Parentheses

^ Power

Supported Functions

sin Sine

cos Cosine

tan Tangent

sin⁻¹ Inverse sine

cos⁻¹ Inverse cosine

tan⁻¹ Inverse tangent

log Log base 10

ln Natural log

√ Square root

x² Square

xⁿ Power (^)

π Pi (3.14159…)

e Euler's number (2.71828…)

% Percentage

How to Use

Enter your value in the input field
Click the Calculate/Convert button
Copy the result to your clipboard

Frequently Asked Questions

How do I use scientific notation?: Scientific notation: number × 10^power. 5.23 × 10³ = 5,230. 3.2 × 10⁻⁴ = 0.00032. On calculators, enter as 5.23E3 or 5.23×10^3. Useful for very large (speed of light: 3×10⁸ m/s) or very small (electron mass: 9.1×10⁻³¹ kg) numbers.
What is the order of operations?: PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division (left to right), Addition and Subtraction (left to right). 2+3×4 = 2+12 = 14, not 20. Use parentheses to override: (2+3)×4 = 20.
How do I calculate logarithms?: log₁₀(x) asks "10 to what power equals x?" log₁₀(100) = 2 because 10² = 100. ln(x) is natural log (base e ≈ 2.718). log₂(x) is used in computing. Change of base: logₐ(x) = log(x)/log(a). Inverse: 10^(log x) = x.
What are common trigonometry functions?: Sin, cos, tan relate angles to sides in right triangles. SOH-CAH-TOA: sin = opposite/hypotenuse, cos = adjacent/hypotenuse, tan = opposite/adjacent. sin(90°) = 1, cos(0°) = 1, tan(45°) = 1. Ensure calculator is in correct mode (degrees vs radians).
What is the difference between degrees and radians?: Degrees: full circle = 360°. Radians: full circle = 2π (≈6.28). Convert: radians = degrees × π/180. 90° = π/2 radians. 180° = π radians. Most programming languages use radians. Check your calculator mode setting before trig calculations.