Scientific Calculator
A full-featured scientific calculator with trig functions, logarithms, powers, and history.
Free Online Scientific Calculator
This free online scientific calculator lets you perform basic arithmetic as well as advanced scientific calculations right in your browser. It supports trigonometric functions (sin, cos, tan), logarithms (log base 10 and natural log), square roots, exponents, factorials, and mathematical constants like π and e. All calculations run locally with no data sent to any server.
How to Use
- Click the number and operator buttons to build your expression, or type using your keyboard.
- Use scientific function buttons (sin, cos, tan, log, ln, √) to insert functions. Arguments go inside parentheses.
- Press = or Enter to evaluate the expression.
- Use the xʸ button for exponents (e.g., 2^10 = 1024).
- Your last 10 calculations appear in the history. Click any entry to reuse its result.
Frequently Asked Questions
What functions does this scientific calculator support?
It supports addition, subtraction, multiplication, division, trigonometric functions (sin, cos, tan in radians), logarithms (log base 10 and natural log), square root, exponentiation, factorials, and the constants π and e.
Are trig functions in degrees or radians?
Trig functions use radians by default, matching the JavaScript Math library. To convert degrees to radians, multiply by π/180. For example, sin(90°) would be entered as sin(1.5707963).
Can I use keyboard shortcuts?
Yes. You can type numbers (0-9), operators (+, -, *, /), parentheses, the caret (^) for exponents, Enter or = to evaluate, Backspace to delete, and Escape to clear.
Is my data saved anywhere?
No. All calculations happen locally in your browser. The history is stored only in memory and is cleared when you close or refresh the page.