Use our free online scientific calculator for advanced math operations — including trigonometry, logarithms, exponents, square roots, factorials, and more. Works directly in your browser with no download needed.
How to Use the Scientific Calculator
Click numbers and operators to build your expression. Trig functions (sin, cos, tan) use degrees. For exponents, use xʸ followed by the exponent — for example, pow(2)4 calculates 2⁴ = 16. Use AC to clear all, and ⌫ to delete the last character.
Supported Functions
- sin / cos / tan — Trigonometric functions (degrees)
- √ — Square root
- log — Base-10 logarithm
- ln — Natural logarithm (base e)
- x² — Square of a number
- xʸ — Power/exponent
- n! — Factorial (integers only)
- |x| — Absolute value
- π — Pi (3.14159…)
- e — Euler's number (2.71828…)
Frequently Asked Questions
What is a scientific calculator used for?
Scientific calculators handle advanced math beyond basic arithmetic — including trigonometry, logarithms, square roots, exponents, and factorials. They're used by students, engineers, scientists, and anyone dealing with complex calculations.
What is sin, cos, and tan in a calculator?
These are trigonometric functions used in geometry and physics. Sin (sine), cos (cosine), and tan (tangent) relate the angles of a right triangle to its side lengths. This calculator uses degrees, not radians.
What is the difference between log and ln?
log (or log₁₀) is the base-10 logarithm — log(100) = 2 because 10² = 100. ln is the natural logarithm (base e) — ln(e) = 1. In science and engineering, ln is commonly used for growth and decay calculations.
How do I calculate factorial (n!) on this calculator?
Press the n! button, then enter the number and press =. For example: n!(5) = 120, because 5! = 5 × 4 × 3 × 2 × 1 = 120. Factorials grow very quickly — this calculator supports up to 170!.
What is Euler's number (e)?
Euler's number (e ≈ 2.71828) is a mathematical constant that appears naturally in problems involving continuous growth or decay — compound interest, population growth, radioactive decay, and more. Press the e button to insert it in a calculation.