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Standard & Scientific Calculator
Whether you need a quick sum or full scientific functions, this free online calculator handles both. The standard mode covers everyday arithmetic — addition, subtraction, multiplication, division, percentages and memory keys — while the scientific mode adds trigonometric functions (sin, cos, tan and their inverses), logarithms, exponents, roots and constants like π and e. Everything runs locally in your browser, so results appear instantly with no page reloads and nothing is ever sent to a server.
Standard & Scientific Calculator
Arithmetic, powers, roots, trigonometry, logarithms, and memory functions.
Also known as: online calculator, basic calculator, math calculator, scientific calculator online.
FAQ
Is this scientific calculator free to use?
Yes, the scientific calculator on CalcDesk is completely free with no sign-up or download required.
Does it support degrees and radians?
Yes — toggle between DEG and RAD in scientific mode before using trigonometric functions.