Order of operations
The calculator applies the standard order: brackets and functions first, then exponents, then multiplication and division, and finally addition and subtraction. That is why 2 + 3 · 4 comes out as 14 rather than 20.
Scientific calculator online
Powers, roots, logarithms and trigonometric functions in one box. You type the whole expression and the calculator evaluates it with the correct order of operations.
Which functions are available
sqrt for roots, log and ln for base-10 and natural logarithms, sin, cos and tan with their inverses, abs, round and factorial. The constants pi and e are typed by name.
Frequently asked questions
Write sqrt(144) or √144 — both give 12. For higher roots use a fractional exponent, for example 1024^(1/5).
Exponentiation binds more tightly than the minus sign, so the expression reads as −(2²) = −4. To square a negative number write (−2)^2 = 4.
Radians, as on most scientific calculators. To get the sine of 30 degrees, enter sin(30 · pi / 180).
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