Scientific Calculator

Basic Calculations

Enter numbers using the number pad or keyboard, then use the operator buttons (+, -, ×, ÷) to perform calculations. Press = or Enter to see the result.

Scientific Functions

Enter a value first, then click the desired function button (sin, cos, tan, log, ln, √, x², etc.). The function will be applied to the displayed value.

Constants

Click π to insert Pi (3.14159...) or e to insert Euler's number (2.71828...). These constants can be used in any calculation.

Memory Functions

M+ adds the current display to memory, M- subtracts it, MR recalls the stored value, and MC clears the memory completely.

Angle Modes

Toggle between DEG (degrees) and RAD (radians) mode using the DEG/RAD button. This affects trigonometric functions like sin, cos, and tan.

Keyboard Shortcuts

• Numbers 0-9: Enter numbers
• +, -, *, /: Operators
• .: Decimal point
• Enter or =: Calculate result
• Escape: Clear all (AC)
• Backspace: Delete last character

How do I use trigonometric functions?

Enter a number in the display, then click the desired function (sin, cos, tan). The calculator will apply the function to the displayed value. Use the DEG/RAD button to switch between degree and radian modes.

What is the difference between DEG and RAD mode?

DEG mode interprets angles as degrees (360 degrees = full circle), while RAD mode interprets angles as radians (2π radians = full circle). Most common calculations use degrees.

How do I calculate powers and exponents?

Click the x² button to square a number, or use the xʸ button followed by the exponent value to raise a number to any power.

How does the memory function work?

M+ adds the current display to memory, M- subtracts it, MR recalls the stored value, and MC clears the memory. Memory persists until you clear it or refresh the page.

Can I use my keyboard with this calculator?

Yes! Numbers 0-9, operators (+, -, *, /), decimal point (.), Enter/= for equals, Escape for clear, and Backspace to delete are all supported.

What is the difference between log and ln?

log is the base-10 logarithm (common logarithm), while ln is the natural logarithm with base e. Both are commonly used in mathematics and science.

Is my calculation history saved?

Your calculation history is stored locally in your browser during your current session. It will be cleared when you refresh the page or close the browser.

Is this calculator free to use?

Yes! This scientific calculator is 100% free with no sign-up required. All calculations happen in your browser for complete privacy.