About this scientific calculator
A scientific calculator goes beyond a basic four-function calculator: as well as adding, subtracting, multiplying and dividing, it can work out trigonometry (sin, cos, tan), logarithms (ln and log), square roots, squares and powers, and it knows the constants pi (π) and e. You build up an expression — like (2+3)×4 or sqrt(16) — and press equals to get the answer. The angle functions use degrees, so sin(30) is 0.5. This tool reads your expression with a small safe math parser (it never runs your text as code), and everything happens in your browser, so nothing you type is uploaded.
Frequently asked questions
- What can this scientific calculator do?
- It handles ordinary math (add, subtract, multiply, divide, parentheses) plus scientific functions: sine, cosine, tangent, natural log (ln), log base 10, square root, squaring, powers, percentages, and the constants pi and e.
- Are the trig functions in degrees or radians?
- The sin, cos and tan functions work in degrees, so typing sin(30) gives 0.5 as most people expect.
- Can I use my keyboard?
- Yes. Type digits and operators directly, press Enter or = to calculate, Backspace to delete, and Escape to clear. Everything runs in your browser, so nothing you type is uploaded.