Scientific Calculator
Free online scientific calculator with trigonometry, logarithms, powers and factorials.
What this scientific calculator can do
- Arithmetic: + − × ÷, brackets, powers (x², x³, xy), percent and factorials (n!).
- Roots: square root (√), cube root (∛) and any root with root(n, x).
- Trigonometry: sin, cos, tan, their inverses (sin⁻¹, cos⁻¹, tan⁻¹) and sinh, cosh, tanh, in degrees or radians.
- Logarithms and exponents: ln, log (base 10), log₂ and ex and 10x.
- Other: absolute value, floor and ceiling, modulo, combinations nCr, permutations nPr, the constants π and e, and Ans for your last result.
Type directly or tap the keys. Press = to lock in a result as Ans. Functions use brackets, such as sqrt(144) or root(3, 27), and writing 2pi or 3(4 + 1) means multiplication.
Order of operations
Brackets first, then powers, then multiplication and division, then addition and subtraction. So 2 + 3 * 4 is 14, while (2 + 3) * 4 is 20.
Worked examples
- sqrt(144) = 12, root(3, 27) = 3 and 2^10 = 1,024
- 5! = 120, nCr(5, 2) = 10 and nPr(5, 2) = 20
- 200 * 10% = 20 and mod(10, 3) = 1
- sin(30) = 0.5 in degrees mode, ln(e) = 1 and log(1000) = 3
Frequently asked questions
Should I use degrees or radians?
Use degrees for everyday angles such as 30 or 90. Use radians when the angle is written with pi, such as pi/2. The unit selector changes how the trigonometric functions read and return angles.
What is the difference between ln and log?
ln is the natural logarithm, with base e. log is the common logarithm, with base 10. So ln(e) is 1 and log(1000) is 3.
What do nCr and nPr mean?
nCr counts the ways to choose r items from n when order does not matter. nPr counts them when order matters. For example, nCr(5, 2) is 10 and nPr(5, 2) is 20.
Why do I get an error?
Common causes are a missing bracket, an operator at the end such as 5+, or a function without brackets. Write sin(30) rather than sin 30.