Free Online Scientific Calculator
Use this free scientific calculator for everyday arithmetic and advanced maths. Calculate trigonometric functions, roots, powers and logarithms in a clean, mobile-friendly tool, with no app or download required.
Keyboard supported: numbers, + − × ÷, brackets, ^, %, !, Enter to calculate and Esc to clear.
How to use the scientific calculator
Tap the number and operation keys to build an expression, then press = to calculate it. Use AC to start over or DEL to remove the last character. Select degrees or radians before using trigonometric functions.
- Basic maths: addition, subtraction, multiplication, division and parentheses.
- Trigonometry: sine, cosine, tangent and inverse trig functions.
- Powers and roots: exponents, squares and square roots.
- Logs and constants: base-10 logarithms, natural logarithms, π and e.
- Extra operations: percentages, factorials and negative values.
What can a scientific calculator help with?
A scientific calculator is useful for school maths, homework, science and engineering basics, and checking expressions that need more than simple arithmetic. It keeps common advanced functions together in one fast browser tool.
Frequently asked questions
Is this scientific calculator free?
Yes. You can use it in your browser without creating an account or installing software.
What is the difference between degrees and radians?
They are two ways to measure angles. Degrees use 360 for a full turn, while radians use 2π. Choose the mode that matches your maths problem.
Can I calculate powers, roots and logarithms?
Yes. Use xʸ for powers, √ for square roots, log for base-10 logarithms and ln for natural logarithms.
Does it work on phones and tablets?
Yes. The keypad adjusts to smaller screens and works on modern mobile, tablet and desktop browsers.