Free online scientific calculator with trig functions, logarithms, exponents, factorials, and more.
Type your mathematical expression using the on-screen buttons or your keyboard. You can use numbers, operators (+, −, ×, ÷), parentheses, and scientific functions. The expression line at the top shows what you've entered in real time, so you can verify your input before calculating. Use the backspace button or the Delete key to fix mistakes, and the AC button to start over completely.
Access advanced functions by tapping the labeled buttons: sin, cos, tan for trigonometry; ln and log for logarithms; x², x³, xⁿ for powers; n! for factorials; √ for square roots; and π or e for mathematical constants. Toggle the INV button to access inverse trigonometric functions (arcsin, arccos, arctan). Switch between DEG (degree) and RAD (radian) mode depending on whether your angle is measured in degrees or radians.
Press the = button or hit Enter on your keyboard to evaluate your expression. The result appears in the large display area below your expression. Every calculation is automatically saved in the History panel on the right — click any past calculation to reload it instantly. This makes it easy to compare results or revisit previous work without re-entering long expressions. Use the Clear button in the history panel to erase all saved calculations.
A scientific calculator is a calculator designed to perform complex mathematical operations beyond basic arithmetic, including trigonometric functions (sin, cos, tan), logarithms (ln, log), exponentials, factorials, and constants like π and e. It is widely used in engineering, physics, chemistry, and advanced mathematics courses. Unlike a basic calculator, it can handle multi-step expressions with proper order of operations and nested parentheses. Our online scientific calculator provides all these features directly in your browser with no download required, making it convenient for students, professionals, and anyone who needs advanced math capabilities on the go.
The key to using trigonometric functions correctly is selecting the right angle mode. Use DEG mode when your angle is measured in degrees (e.g., sin(30°) = 0.5), which is common in geometry and everyday applications. Use RAD mode when working with radians (e.g., sin(π/2) = 1), which is standard in calculus and higher mathematics. Toggle the INV button before pressing sin, cos, or tan to compute inverse functions (arcsin, arccos, arctan), which return the angle whose trig value equals the input. Remember that inverse trig functions have restricted domains: arcsin and arccos only accept values between -1 and 1, and their outputs are limited to specific ranges to ensure valid results.
ln (natural logarithm) uses the mathematical constant e ≈ 2.71828 as its base, while log (common logarithm) uses base 10. The natural logarithm appears frequently in calculus, differential equations, and natural growth or decay models. The common logarithm is used in chemistry (pH calculations), acoustics (decibel scale), and many engineering applications. For example, ln(e) = 1 and ln(1) = 0, while log(100) = 2 and log(1000) = 3. Understanding which logarithm to use depends on your field and the formula you're working with — check whether the equation specifies "log" or "ln" before calculating.
© 2024 Risetop. Free online tools for everyone.