Scientific Calculator

About this calculator

Our free online scientific calculator handles everything from basic arithmetic to advanced mathematics. Compute sine, cosine, and tangent in both degree and radian modes, evaluate natural and base-10 logarithms, raise numbers to any power, and extract square roots in seconds. Additional functions include factorials, absolute value, reciprocals, the constants π and e, and a percentage key. Every calculation is saved to a scrollable history so you can review or reuse previous results without retyping. Full keyboard support means you can type expressions naturally and press Enter to evaluate — no mouse required. Whether you are solving a trigonometry assignment, checking a physics formula, or verifying an engineering calculation, CalcKit's scientific calculator gives you accurate results instantly, right in your browser.