Calculator
Free online calculator with basic and scientific functions, memory storage, and calculation history
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M: 0
How to Use the Online Calculator
Our free online calculator offers both basic arithmetic and scientific functions. Use your mouse to click buttons or use your keyboard for faster input. The calculator includes memory functions, calculation history, and supports complex mathematical operations.
Calculator Features
- Basic arithmetic operations (+, -, ×, ÷)
- Scientific functions (sin, cos, tan, log, ln)
- Memory functions (MC, MR, M+, M-, MS)
- Calculation history with quick access
- Keyboard support for faster input
- Square root, square, cube, and factorial functions
Keyboard Shortcuts
- Numbers 0-9: Input digits
- +, -, *, /: Mathematical operations
- Enter or =: Calculate result
- Escape: Clear all (AC)
- Backspace: Delete last digit
- .: Decimal point
Scientific Calculator Functions
Switch to scientific mode to access advanced mathematical functions including trigonometric functions (sin, cos, tan), logarithmic functions (log, ln), square root, power functions, and factorial calculations. All scientific functions work with degrees for trigonometric calculations.
Memory and History Features
The calculator includes full memory functionality with MC (Memory Clear), MR (Memory Recall), M+ (Memory Add), M- (Memory Subtract), and MS (Memory Store) functions. View your calculation history by clicking the History button and quickly reuse previous results in new calculations.
Frequently Asked Questions
What operations does the calculator support?
The calculator supports all standard arithmetic operations — addition, subtraction, multiplication, and division — as well as percentages, square roots, and full memory functions (MC, MR, M+, M−, MS).
How do the memory functions work?
MS stores the current value in memory; MR recalls it; M+ adds the current value to memory; M− subtracts it; MC clears memory. These let you save intermediate results and reuse them without re-typing.
Can I view past calculations?
Yes. Click the History button to see a log of your previous calculations. You can tap any historical result to reuse it in a new calculation.
What order of operations does the calculator use?
The calculator follows standard mathematical order of operations (PEMDAS/BODMAS): parentheses first, then exponents, then multiplication and division left-to-right, then addition and subtraction left-to-right.
Can I use the calculator with my keyboard?
Yes. The calculator is fully keyboard-accessible — type numbers and operators directly, press Enter to evaluate, Backspace to delete, and Escape to clear the display.
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