Scientific Calculator
A full-featured scientific calculator for algebra, trigonometry, calculus, and science. Works on any device — no download needed.
Scientific calculator Sin · Cos · Log · √ · x²
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Keyboard shortcuts
0–9Number keys
EnterCalculate
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+ − * /Operators
.Decimal point
Frequently asked questions
What is the difference between DEG and RAD mode? ›
DEG (degree) mode measures angles in degrees (0–360°). RAD (radian) mode measures angles in radians (0–2π). Most high school math and everyday problems use degrees. Calculus and advanced math often use radians. If you get unexpected results from sin, cos, or tan, check that you're in the right mode.
What does the log button calculate? ›
The log button computes the base-10 logarithm (log₁₀). The ln button computes the natural logarithm (base e). log(100) = 2 because 10² = 100. ln(e) = 1 because e¹ = e. Use log for chemistry (pH calculations), decibels, and earthquake magnitude. Use ln for growth/decay problems and calculus.
How do I calculate exponents? ›
Use the xʸ button to raise any number to any power. Enter the base first, press xʸ, then enter the exponent, then press =. For example: 2 → xʸ → 10 → = gives 1024 (2¹⁰). The x² button squares a number instantly. For square roots, use the √ button.
Can I use this on my phone? ›
Yes — this calculator is fully responsive and works on any smartphone or tablet. You can also add this page to your home screen for quick access without opening a browser every time. Tap the share button in your browser and select "Add to Home Screen."
About this scientific calculator
This free online scientific calculator includes all the functions found on a standard handheld scientific calculator — trigonometric functions (sin, cos, tan), logarithms (log, ln), exponents, square roots, factorials, absolute value, and the constants π and e. It supports both degree and radian mode for trig calculations.