Scientific calculator
History
No calculations yet. The last 50 calculations show here.
A free scientific calculator with degrees and radians. It has trigonometry, logarithm, square root, power and factorial.
How to use it
- Type the calculation with the keys.
- For a function such as sin, press its key and then type the number.
- Choose DEG for degrees or RAD for radians.
- Press = to show the result.
Questions
What is the difference between degrees and radians?
A full circle is 360 degrees. It is also 2π radians. Press DEG or RAD to choose the unit. The calculator starts in degrees.
How do I calculate a square root?
Press the √ key and type the number. For example, √(16) gives 4. Press the x² key to square a number.
How do I calculate a power?
Type the base, press xʸ, and type the exponent. For example, 2 then xʸ then 10 gives 1024.
What is the difference between log and ln?
The log key is the base 10 logarithm. The ln key is the natural logarithm. For example, log(1000) gives 3.
What is the largest number I can use for a factorial?
The largest number is 170. The number must be a whole number and not negative. If it is not, the calculator shows an error.