🧮 Free Scientific Calculator

Our free online scientific calculator provides all the functions you need for advanced mathematics, from basic arithmetic to trigonometry, logarithms, exponents, and constants. Unlike a basic calculator, it supports sine, cosine, tangent, logarithms (base 10 and natural log), square roots, powers, and mathematical constants like Pi and Euler's number. Whether you are a student tackling precalculus, an engineer running quick calculations, or a professional who needs a reliable browser-based scientific calculator online, this tool gives you a full-featured computing experience without any downloads or installations. Every calculation runs locally in your browser — nothing is sent to a server, so your data stays private.

This online scientific calculator uses JavaScript's built-in Math library to evaluate expressions in real time. When you press a button, the corresponding symbol or function is appended to the expression string displayed in the input area. When you press the equals sign, the tool evaluates the expression using safe JavaScript evaluation with the Math object, handling operator precedence automatically. Trigonometric functions accept angles in radians by default, and you can use parentheses to control the order of operations. The display shows both your current input and the running expression so you can keep track of complex calculations step by step.

Core Functions

Here is a quick reference for the most common scientific calculator operations and their keyboard equivalents.

1. Enter your calculation — Click the number buttons (0–9) and operators (+, −, ×, ÷) to build your expression. The current input appears in the display area.
2. Use scientific functions — Click sin, cos, tan, log, or ln to insert the function. For example, click “sin(” then type “30” and close with “)” to calculate sin(30).
3. Apply powers and roots — Click x² to square, x³ to cube, or xʸ to raise to any power. Use √ to calculate the square root of the number that follows.
4. Use parentheses — Click ( and ) to control the order of operations in complex expressions.
5. Get the result — Press the = button to evaluate your expression. The result appears in the main display, while the expression history is preserved above.

Is this scientific calculator free to use?

Yes, completely free. There are no subscriptions, hidden fees, or account requirements. Ourfree scientific calculatoris available to anyone with a web browser, and all calculations are performed locally on your device.

Does this calculator use degrees or radians?

Trigonometric functions (sin, cos, tan) use radians by default, which is the standard in mathematics and most scientific contexts. If you need to convert degrees to radians, multiply the degree value by π/180 (approximately 0.01745). For example, sin(30°) = sin(30 × π/180) = sin(0.5236) = 0.5.

Can I use this for exam or homework?

Absolutely. Thisonline scientific calculatoris suitable for homework, self-study, and professional use. However, always check with your institution's policy on calculator usage during exams, as some may restrict browser-based tools.

What happens to my calculations?

Nothing. Every calculation runs entirely within your browser using JavaScript. No data is transmitted to any server, and no history is stored. Your privacy is fully protected — this is a core design principle of Muxtly tools.

To get the most out of your scientific calculator, remember to use parentheses to clarify complex expressions. For instance, "2 + 3 × 4" equals 14 (multiplication first), but "(2 + 3) × 4" equals 20. For trigonometric calculations, verify whether you are working in radians or degrees and convert accordingly. When dealing with very large or very small numbers, scientific notation is supported — for example, "1e6" represents one million. Bookmark this page for quick access during study sessions, engineering work, or data analysis tasks.