Simple and easy to use online calculator for use at work, at school or at home.

With our online calculator you will be able to perform not only simple arithmetic, but also raise a number to a power, calculate the square root, calculation of interest.

Commands for the calculator you can enter both the mouse and using the computer keyboard. Detailed instructions for using the free online calculator, see below.

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Instructions for using the online calculator

Keys function

, , , - standard number keys; - key input 2 zeros; - remove the last character on the display; - change the mathematical sign of; - calculate the square root; - addition, - subtraction, - multiplication, - division; - calculate interest; - raise a number to a power; - stored in the memory with the sign + ; - stored in the memory with the sign - ; - get the contents of memory; - clear the memory; - reset the last digit of the; - reset the last value and clear the memory.

Examples of calculations on the online calculator

Calculate the square root of 529: . Result - 23. Raise the number 3 to a power 4: . Result - 81. Calculation of percentage of the number of - . Result - 125. Adding percentage to the number - . Result - 625. Deduction percentage of the number - . Result - 375.

Entering commands from the keyboard

For the work of the free online calculator You can use both ordinary numeric buttons above the keyboard and separate numeric buttons on the right.

To enter [ = ], you can use the [Enter].
To erase the last character you can use the key to erase the last character [ Backspace ] (arrow keys).
To enter the sign [ + ] you can use either the [ + ] key at the top or press the [ + ] on the numeric keypad on the right.
To enter the sign [ - ] you can use either the [ - ] key at the top or press the [ - ] on the numeric keypad on the right.
To enter a [ x ] (multiplication) you can use the [ * ] key on the numeric keypad to the right or a combination of keys[ * ] and [ Shift ].
To enter a [ ÷ ] (divide) you can use the [ / ] key on the numeric keypad to the right or a combination of keys [ : ] and [ Shift ].