Intuitive, Spacious, and Multifunctional Calculator

Perfect for professional tasks, academic work, or personal calculations. Perform everything from basic arithmetic to complex computations like loan interest, service cost estimates, and utility bill calculations.

Use your mouse or keyboard’s numeric keypad to input commands. Detailed guidance on using the calculator is provided below.

Guide to Using the Enhanced Calculator

Button Functions

• [ 0 ], [ 1 ], [ 2 ], ..., [ 9 ] - Numeric keys for entering digits;
• [ 00 ] - Adds two zeros in one click;
• [ ← ] - Deletes the most recent character on the screen;
• [ +/- ] - Toggles the sign of the displayed number;
• [ xʸ ] - Raises a number (X) to the power of another (Y);
• [ √ ] - Computes the square root of the displayed value;
• [ + ], [ - ], [ × ], [ ÷ ] - Performs addition, subtraction, multiplication, or division;
• [ % ] - Executes percentage-based calculations;
• [ M+ ] - Adds the current value to memory;
• [ M- ] - Subtracts the current value from memory;
• [ MR ] - Recalls the stored memory value;
• [ MC ] - Clears the memory completely;
• [ AC ] - Resets the calculator and clears memory;
• [ C ] - Resets the calculator without affecting memory.

Sample Calculations

• Square root of 529: Input 529 [ √ ]. Result: 23.
• Raise 3 to the power of 4: Input 3 [ xʸ ] 4 [ = ]. Result: 81.
• Find 25% of 500: Input 500 [ × ] 25 [ % ]. Result: 125.
• Calculate what percent 25 is of 500: Input 25 [ ÷ ] 500 [ % ]. Result: 5%.
• Add 25% to 500: Input 500 [ + ] 25 [ % ]. Result: 625.
• Subtract 25% from 500: Input 500 [ - ] 25 [ % ]. Result: 375.

Keyboard Input for PC/Mac

Operate this advanced calculator using the numeric keys at the top of your keyboard or the numeric keypad on the right.

To calculate [ = ] - Press [Enter].

To erase the last character - Use [Backspace].

For [ + ] - Press top [ + ] or numeric pad [ + ].

For [ - ] - Press top [ - ] or numeric pad [ - ].

For [ × ] (multiply) - Use numeric pad [ * ] or [ * ] with [ Shift ].

For [ ÷ ] (divide) - Use numeric pad [ / ] or [ : ] with [ Shift ].

Common Questions

Why does 2 + 2 × 2 give 8?

This calculator processes operations in the order they are entered, not following the standard mathematical order of operations. The current calculation is shown in a secondary display above the main screen.

For example: 2 + 2 equals 4 first, then 4 × 2 equals 8.

The Evolution of Calculators

The modern calculator traces its roots to the Abacus, a Latin term meaning "flat surface." It consisted of a framed board with sliding beads or stones for counting.

The earliest Abacus likely emerged in ancient Babylon around 3000 BC. In ancient Greece, it became prominent around the 5th century BC.

This calculator includes a calculation history log, allowing you to review past computations. Toggle the history panel using the button above.

Advanced Scientific Calculator

The Ultimate Free Online Scientific Calculator

Powerful, User-Friendly, and Versatile Calculator

Designed for complex mathematical tasks, this calculator handles trigonometric functions (sine, cosine, tangent, cotangent), logarithms, powers, and roots, including nth roots. Ideal for students, engineers, and professionals.

Operate it effortlessly online using a mouse or numeric keypad, with no downloads or installations required. Customize settings and save them for a tailored experience.

Explore usage instructions and examples below to master this scientific calculator.

Using the Scientific Calculator

Trigonometric and Scientific Function Keys

• [ sin ] - Computes the sine of an angle (in degrees);
• [ cos ] - Computes the cosine of an angle (in degrees);
• [ tan ] - Computes the tangent of an angle (in degrees);
• [ cot ] - Computes the cotangent of an angle (in degrees);
• [ π ] - Inserts the constant π (pi, ~3.14159);
• [ e ] - Inserts the constant e (Euler’s number, ~2.71828);
• [ log ] - Calculates the common logarithm (base 10);
• [ ln ] - Calculates the natural logarithm (base e);
• [ logY ] - Calculates the logarithm of a number to a specified base;
• [ √ ] - Computes the square root;
• [ x² ] - Squares the current number;
• [ xʸ ] - Raises a number (x) to the power of another (y).

Standard Button Functions

• [ 0 ], [ 1 ], [ 2 ], ..., [ 9 ] - Numeric keys for digit input;
• [ 00 ] - Quickly inputs two zeros;
• [ ← ] - Removes the last character from the display;
• [ +/- ] - Switches the sign of the displayed number;
• [ + ], [ - ], [ × ], [ ÷ ] - Performs addition, subtraction, multiplication, or division;
• [ % ] - Handles percentage calculations;
• [ M+ ] - Adds the current value to memory;
• [ M- ] - Subtracts the current value from memory;
• [ MR ] - Retrieves the stored memory value;
• [ MC ] - Clears the memory;
• [ AC ] - Resets the calculator and memory;
• [ C ] - Resets the calculator without clearing memory.

Keyboard Input for PC/Mac

Use the numeric keys at the top of your keyboard or the numeric keypad on the right for input.

To calculate [ = ] - Press [Enter].

To delete the last character - Press [Backspace].

For [ + ] - Use top [ + ] or numeric pad [ + ].

For [ - ] - Use top [ - ] or numeric pad [ - ].

For [ × ] (multiply) - Use numeric pad [ * ] or [ * ] with [ Shift ].

For [ ÷ ] (divide) - Use numeric pad [ / ] or [ : ] with [ Shift ].

To reset - Use [Esc], [Del], or [End] keys.

Sample Calculations

• Tangent of 45 degrees: Input 45 [ tan ]. Result: 1.
• Sine of 30 degrees: Input 30 [ sin ]. Result: 0.5.
• Common logarithm of 100: Input 100 [ log ]. Result: 2.
• Logarithm of 125 base 5: Input 125 [ logY ] 5. Result: 3.
• Square root of 529: Input 529 [ √ ]. Result: 23.
• Raise 3 to the power of 4: Input 3 [ xʸ ] 4 [ = ]. Result: 81.
• Find 25% of 500: Input 500 [ × ] 25 [ % ]. Result: 125.
• Calculate what percent 25 is of 500: Input 25 [ ÷ ] 500 [ % ]. Result: 5%.
• Add 25% to 500: Input 500 [ + ] 25 [ % ]. Result: 625.
• Subtract 25% from 500: Input 500 [ - ] 25 [ % ]. Result: 375.

Calculator Evolution

The modern calculator evolved from the arithmometer, a mechanical device primarily used for multiplication and division. While capable of addition and subtraction, these operations were cumbersome. As a digital tool, the arithmometer’s calculations were highly accurate, laying the foundation for today’s calculators.

This calculator includes a calculation history log to review past computations. Toggle the history panel using the button above for easy access to your calculation records.

Versatile Root Calculator

This calculator is designed to compute roots of any degree, from square roots to nth roots, with customizable precision. By default, it calculates square roots, but you can adjust the degree and decimal accuracy to suit your needs.

How to Use the Root Calculator

• Number Input: Enter the number for which you want to calculate the root in the "Number" field.
• Degree Input: Specify the root degree (e.g., 2 for square root, 3 for cube root) in the "Degree" field. The default is 2.
• Precision Setting: Adjust the number of decimal places using the dropdown menu (default is 10 decimal places).
• Automatic Results: The calculator updates results instantly as you type or modify settings, so there's usually no need to press "OK."
• Reset Option: Click the "Reset" button to restore the calculator to its initial state.

This calculator features real-time computation, instantly updating results as you input numbers or change settings, enhancing efficiency for quick calculations.

Enjoy seamless and precise root calculations!

Comprehensive Percentage Calculator

This calculator simplifies a variety of percentage-based computations, including finding a percentage of a number, determining what percentage one number is of another, adding a percentage to a number, and subtracting a percentage from a number. It also calculates percentage increases or decreases between two values.

How to Use the Percentage Calculator

• Select Calculation Mode: Choose the desired calculation type from the dropdown menu (e.g., "What is X% of Y?", "Add X% to Y").
• Enter Values: Input the required numbers in the corresponding fields.
• Set Precision: Adjust the number of decimal places using the precision dropdown menu.
• View Results: Results update automatically as you enter numbers or change settings, eliminating the need to press "OK" in most cases.
• Copy Results: Click the result to copy it to your clipboard.
• Clear Inputs: Use the "Clear" button to reset individual calculation fields.
• Manage Calculations: Save, delete, or adjust previous calculations using the memory feature.

Calculation Examples

• What is 58% of 240.2591? Select mode, enter 58 and 240.2591, set precision to 4. Result: 139.3503.
• What percentage is 258 of 457.2578? Select mode, enter 258 and 457.2578, set precision to 6. Result: 56.423313%.
• Add 27% to 534: Select mode, enter 27 and 534, set precision to 2. Result: 678.18.
• Deduct 18% from 3587.4578: Select mode, enter 18 and 3587.4578, set precision to 4. Result: 2941.7154.

Manual Percentage Calculations

What is 18% of 450?

• Divide: 450 ÷ 100 = 4.5
• Multiply: 4.5 × 18 = 81
• Result: 81

What percentage is 45 of 500?

• Divide: 500 ÷ 45 = 11.1111
• Calculate: 100 ÷ 11.1111 = 9
• Result: 9%

Add 12% to 572:

• Divide: 572 ÷ 100 = 5.72
• Multiply: 12 × 5.72 = 68.64
• Add: 572 + 68.64 = 640.64
• Result: 640.64

Deduct 45% from 2870:

• Divide: 2870 ÷ 100 = 28.7
• Multiply: 45 × 28.7 = 1291.5
• Subtract: 2870 − 1291.5 = 1578.5
• Result: 1578.5

History of Percentage Calculations

Percentage calculations trace back to ancient Babylon, where "per hundred" (from Latin) was used to compute yields, recorded on cuneiform tablets. Another origin lies in India, where accountants used the rule of three for proportional calculations. In ancient Rome, percentages emerged to regulate the maximum interest creditors could charge debtors beyond the principal amount.

This calculator saves your previous calculations, allowing you to review, adjust, or delete them, enhancing efficiency for repeated tasks.