Scientific calculator
Click the keys like on a pocket calculator, or type the whole expression, such as 2sin(30) + √16. The result updates as you type.
How to enter expressions
- The usual order of operations applies: powers first, then multiplication and division, then addition and subtraction.
- You can leave out the multiplication sign:
2π,3(4+1)and2sin(30)all work. - Use a decimal point. Separate function arguments with a comma:
max(2, 7). - Write very large or small numbers as
1.5e-3, or use the ×10ˣ key. - Ans is the last result. After pressing =, press an operator to keep calculating from the result.
- Percent works as written:
200 × 15%= 30. - Missing closing parentheses at the end are added for you, so
√(9+16gives 5.
Available functions
| Notation | Meaning | Example |
|---|---|---|
sin, cos, tan, cot | trigonometric functions | sin(30) = 0.5 |
asin, acos, atan | inverse functions | asin(0.5) = 30 |
sinh, cosh, tanh | hyperbolic functions | cosh(0) = 1 |
√x, ∛x, root(x, n) | roots | root(81, 4) = 3 |
x^y, x², x³ | powers | 2^10 = 1024 |
log, ln, log(a, b) | logarithms: base 10, natural, base a | log(2, 8) = 3 |
n! | factorial | 5! = 120 |
nCr(n, k), nPr(n, k) | combinations and permutations | nCr(49, 6) = 13,983,816 |
abs, floor, ceil, round | absolute value and rounding | round(2.5) = 3 |
gcd, lcm, mod | greatest common divisor, least common multiple, remainder | gcd(12, 18) = 6 |
π, e, Ans | constants and the last result | 2π ≈ 6.2832 |
Degrees or radians?
The switch above the expression decides the angle unit for sin, cos, tan and cot, and for the results of the inverse functions. School geometry usually works in degrees; calculus and physics use radians. A full turn is 360° or 2π radians.
Common questions
How do I calculate sine in degrees?
Keep Degrees selected (the default) and type sin(30). The result is 0.5. Switch to Radians if your angle is in radians, for example sin(π/6).
Why does tan(90°) have no result?
The tangent of 90° is undefined, because cos(90°) = 0 and tan x = sin x / cos x. The calculator says so instead of showing a huge, meaningless number.
What is the difference between log and ln?
log is the common logarithm (base 10) and ln is the natural logarithm (base e ≈ 2.718). For any other base, use log(base, number), for example log(2, 8) = 3.
How do I enter other roots?
Use root(number, degree), for example root(32, 5) = 2. The square root is √ and the cube root is ∛.
Is my calculation history sent anywhere?
No. The history is saved only in your browser's storage and disappears when you click Clear history or clear this site's data.