Scientific Calculator
Free online scientific calculator with sin, cos, tan, log, ln, square root, exponents, and factorial. Works on any device.
Our free online Scientific Calculator handles everything from basic arithmetic to advanced math functions, right in your browser. Perform addition, subtraction, multiplication, and division alongside trigonometric functions (sin, cos, tan), logarithms (log base 10 and… Use the fields above to enter values and get an instant answer. All processing happens on your device.
About This Calculator
Our free online Scientific Calculator handles everything from basic arithmetic to advanced math functions, right in your browser. Perform addition, subtraction, multiplication, and division alongside trigonometric functions (sin, cos, tan), logarithms (log base 10 and natural log), exponentials (e^x, x^y), square roots, factorials, and reciprocals. The calculator works on phones, tablets, and desktops with a responsive button layout, making it a handy replacement for a physical calculator during exams prep, homework, engineering projects, or lab work. No app download required — just open the page and start calculating.
How It Works
Click the number and operator buttons (or type on your keyboard) to build an expression. Press "=" to evaluate. The calculator follows standard mathematical order of operations (PEMDAS/BODMAS). Trigonometric functions accept angles in degrees. Logarithm (log) computes base-10 logarithm; ln computes the natural logarithm (base e). The x^y button raises x to any power, and n! computes the factorial. The display shows both your current expression and the result, so you can verify your input before committing.
How to Use
- Enter your values in the calculator fields above
- Click the calculate button or let the calculator auto-update
- Review your results instantly
- Adjust values as needed to see different scenarios
Frequently Asked Questions
What functions does this scientific calculator include?
Basic: +, -, x, /. Trigonometry: sin, cos, tan (in degrees). Logarithms: log (base 10), ln (base e). Exponentials: x^y (any power), e^x. Roots: square root. Other: factorial (n!), reciprocal (1/x), parentheses for grouping, pi constant, and percentage.
Does the calculator use degrees or radians for trigonometry?
It uses degrees by default, which is the most common setting for schoolwork and everyday use. For example, sin(30) returns 0.5 and cos(60) returns 0.5. If you need radians, convert first: radians = degrees x (pi / 180).
What is the difference between log and ln?
log is the common logarithm (base 10): log(100) = 2 because 10^2 = 100. ln is the natural logarithm (base e, approximately 2.718): ln(e) = 1. Use log for pH calculations, decibels, and orders of magnitude. Use ln for compound interest, population growth, radioactive decay, and calculus.
Can I use this on my phone during study sessions?
Yes. The calculator is fully responsive and works on any device with a browser — phone, tablet, or desktop. The button layout adjusts to your screen size for easy tapping. No app installation is needed.
Does it follow order of operations (PEMDAS)?
Yes. The calculator respects standard mathematical precedence: Parentheses first, then Exponents, then Multiplication/Division (left to right), then Addition/Subtraction (left to right). Use parentheses to override the default order when needed.
Why Use Our Free Scientific Calculator Online?
Our Scientific Calculator uses standard formulas and works in your browser—no install or sign-up. Use it for homework, travel, or everyday conversions. Results are instant and we don't collect your inputs. Explore our other math and unit converters from the link below.