Scientific calculator
Type an expression the way you would write it; the answer updates as you type.
Result
Result: 94
How it works
The calculator reads your expression with the usual order of operations: brackets first, then powers and roots, then multiplication and division, then addition and subtraction. Powers group from the right, so 2^3^2 is 2^9.
A minus sign in front applies after the power: −2^2 is −4. A number written next to a bracket, π, e or a function is multiplied, so 2π and 3sin(30) work. % divides by 100 and ! is the factorial.
The answer is rounded to 15 significant digits, which hides tiny floating-point errors such as 0.1 + 0.2 = 0.30000000000000004. In degree mode, sin, cos and tan give exact values at multiples of 90°.
Formula
Order: ( ) → ^ √ ! % → × ÷ → + − sin, cos, tan take degrees or radians log = base 10, ln = base e 1.5e3 = 1.5 × 10³
Worked example
2 × (3 + 4)^2 − √16 = 2 × 49 − 4 = 94. In degree mode sin(30) = 0.5, and in radian mode sin(π/6) gives the same 0.5.
Questions people ask
Why is −2^2 equal to −4?
Powers are worked out before the minus sign, as in standard maths notation. Type (−2)^2 to get 4.
How do I switch between degrees and radians?
Use the Angles setting. It changes how sin, cos and tan read their input and how asin, acos and atan give their answer.
Does the calculator store what I type?
No. The expression is worked out in your browser and is not sent or saved anywhere.