A scientific calculator performs advanced mathematical operations beyond basic arithmetic — including trigonometry (sin, cos, tan), logarithms (log, ln), powers, square roots, factorials, and constants like pi (3.14159) and e (2.71828). Use it for maths, physics, chemistry, and engineering.
📐 Math
🧮 Scientific Calculator
Full scientific calculator with trigonometry, logarithms, powers, roots, factorials, and more. Perfect for students, engineers, and anyone who needs advanced maths!
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✨ Your Result
🦉Owl's Explanation
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Fill in the values above and click Calculate ✨
🤔 How Does This Work?
Our Scientific Calculator evaluates mathematical expressions using JavaScript's built-in Math library:
Trig functions: sin, cos, tan (input in degrees, converted to radians)
Logarithms: log (base 10) and ln (natural log, base e)
Powers: x^y using the ** operator
Square root: sqrt() using Math.sqrt()
Constants: pi = 3.14159265... and e = 2.71828182...
Factorial: n! calculates the product of all positive integers up to n
Click buttons to build your expression, then click Calculate (=) to evaluate it.
✅ Trusted Tool
The 365tool.net Scientific Calculator runs entirely in your browser using standard mathematical functions. No data is sent to any server. Free for students, teachers, engineers, and scientists worldwide.
❓ FAQ
What is a scientific calculator used for?▼
A scientific calculator handles advanced maths beyond basic addition and subtraction. Students use it for trigonometry, logarithms, and algebra. Engineers use it for physics calculations. Scientists use it for chemistry and statistics.
What does sin, cos, and tan mean?▼
These are trigonometry functions used to work with triangles and angles. Sin = opposite/hypotenuse. Cos = adjacent/hypotenuse. Tan = opposite/adjacent. They are essential for physics, engineering, and architecture.
What is log vs ln?▼
Log (log10) is the common logarithm — how many times you multiply 10 to get a number. Log(100) = 2 because 10^2 = 100. Ln is the natural logarithm using e (2.71828). Both are used in science, engineering, and finance.
What is pi and why is it important?▼
Pi (pi = 3.14159...) is the ratio of a circle's circumference to its diameter. It is the same for every circle in the universe! It is used to calculate area of circles, volume of cylinders, and appears in hundreds of science and engineering formulas.
What is factorial (n!) used for?▼
Factorial means multiplying a number by every whole number below it. 5! = 5x4x3x2x1 = 120. Factorials are used in probability, statistics, combinations, and permutations. They grow very fast — 10! = 3,628,800!