Build on earlier lines
Define a=5 or f(x)=x^2+1, then reuse them in later expressions. ans always points to the most recent numeric result.
a=5→a^2+126CALCULATE · DEFINE · EXPLORE
Scientific Calculator
Type naturally or use the keypad. Work with fractions, variables, functions, lists, statistics, and complex numbers without leaving the calculator.
3 padsmain · abc · functions
livepreview + history
localno account
Radians · real mode
Your calculation history appears here.Press Enter to keep a line. Use ↑ and ↓ to recall earlier expressions.
LIVE1
Enter evaluates · ↑/↓ recalls history · type
ans for the previous resultTry
Calculate across a list
Use [1...10] or stepped ranges like [1,3...11]. Lists work with powers and statistics such as mean, median, sum, and standard deviation.
[1...5]^2[1, 4, 9, 16, 25]Keep complex work in the same place
Turn on Complex to use i, square roots of negative numbers, and real, imag, conj, arg, and modulus. Complex mode stays in radians.
sqrt(-4)2iSwitch the answer, not the expression
Real scalar results can toggle between decimal and fraction form. Large or tiny values automatically use scientific notation when that is easier to scan.
1 + 5/81.625 ↔ 13/8FUNCTION REFERENCE
Everything stays behind the calculator until you need it
Core
+ − * / ^ % !sqrt(x) · cbrt(x) · nthroot(n,x)abs(x) · ln(x) · log(x) · log(x,b)
Trig
sin cos tanasin acos atansec csc cotsinh cosh tanh
Statistics
sum(L) · mean(L)median(L) · min(L) · max(L)stdevp(L) · stdevs(L)
Complex
real(z) · imag(z)conj(z) · arg(z) · mod(z)
Enable Complex to use i.
Calculator scope, conventions & privacy
Expression rules
Powers bind before unary minus, so -2^2 is -(2^2) = -4. Powers associate right-to-left, so 2^3^2 means 2^(3^2). Implicit multiplication works in expressions such as 2pi and 2(3+4).
Real and complex results
Real mode reports when an expression leaves the real numbers instead of silently returning a complex value. Enable Complex for those calculations. In Complex mode the angle unit is radians.
Fractions
Fraction view uses a bounded continued-fraction approximation for real decimal results. It is a display conversion, not a claim that every floating-point result is an exact rational.
Privacy
The calculator runs locally in your browser. Recent history and display settings are stored locally only so the workspace can resume without an account.