Scientific Calculator
Enter values to calculate scientific with a clear result.
Calculate
Enter values and select Calculate.
How it works
Expressions follow parentheses, powers, multiplication and division, then addition and subtraction. sin, cos and tan use the selected angle unit; sqrt(x) is the principal square root of x.
Worked examples
- sqrt(81) + 2^3: 17
- sin(30) in degrees: 0.5
Frequently asked questions
Is this calculator free?
Yes. You can use it without paying or creating an account.
Does it work on a phone?
Yes. The page adapts to small and large screens.
Can I enter zero?
Where zero is mathematically valid, the calculator accepts it.
What happens if I enter an invalid value?
You will see a clear message explaining what to correct.
Does the calculation run in my browser?
Yes. The calculator runs with JavaScript on your device.
Related tools
Last updated: October 17, 2026