Scientific Calculator

A full scientific calculator

The Scientific Calculator evaluates complete mathematical expressions — not just one operation at a time. It handles the standard arithmetic plus trigonometry, logarithms, square roots, exponents, parentheses, and the constants π and e. Tap the buttons or type an expression directly and press equals (or Enter) to compute it.

What it can do

Function	Example
Arithmetic	2 + 3 × 4
Powers	2 ^ 10
Square root	sqrt(144)
Trigonometry	sin(0), cos(π)
Logarithms	log(1000), ln(e)

How to use it

1. Build an expression with the buttons, or type it in the field.
2. Use parentheses to control the order of operations.
3. Press = (or Enter) to see the result.

Order of operations

The calculator follows the standard order of operations (PEMDAS/BODMAS): parentheses first, then exponents, then multiplication and division, then addition and subtraction. So 2 + 3 × 4 is 14, not 20. Use parentheses whenever you want to force a different order, like (2 + 3) × 4 = 20.

Trigonometry note

The trig functions work in radians, the mathematical standard. To work with degrees, convert first by multiplying by π/180 — for example, sin(30 × π / 180) gives the sine of 30 degrees. The constant π is available as a button so these conversions are easy.

Safe and private

Expressions are parsed and evaluated with a proper math parser in your browser — not by running arbitrary code — so it's both safe and private. Nothing is uploaded, and there's no limit on how many calculations you do.

Tips

• You can type directly: try sqrt(2)^2 or log(100).
• Use ^ for powers and π / e for the constants.
• Press C to clear and start a new calculation.

Private and free

The calculator is completely free with no sign-up, running entirely in your browser.