Basic Calculator
Simple math calculator with full keyboard support and calculation history
History
How to Use the Basic Calculator
This calculator supports all basic arithmetic operations with full keyboard support and calculation history
Features
Basic Operations
Addition, subtraction, multiplication, and division
Keyboard Support
Full keyboard shortcuts for faster calculations
Calculation History
Keep track of all your calculations
Order of Operations
Follows standard mathematical order (PEMDAS)
How to Use
Basic Calculations
Click numbers and operation buttons, or use your keyboard. Press equals (=) or Enter to calculate results.
Keyboard Shortcuts
Use number keys (0-9), operators (+, -, *, /), decimal point (.), Enter/= to calculate, Escape to clear, and Backspace to delete last entry.
Advanced Features
Use +/- button to change sign, AC to clear all, and view your calculation history on the right panel.
Frequently Asked Questions
Common questions about using the basic calculator
Q: How accurate are the calculations?
Our basic calculator uses JavaScript's native arithmetic operations, providing accuracy up to 15-17 significant digits. For most everyday calculations, this level of precision is more than sufficient.
Q: Can I use keyboard shortcuts?
Yes! Use number keys (0-9), operators (+, -, *, /), decimal point (.), Enter or = to calculate, Escape to clear, and Backspace to delete the last entry. This makes calculations much faster.
Q: Is my calculation history saved?
Yes, your calculation history is automatically saved in your browser's local storage. This means your recent calculations will be available when you return to the calculator, even after closing your browser.
Q: Does this calculator follow order of operations?
This basic calculator performs operations in the order they are entered, rather than following mathematical order of operations (PEMDAS). For complex expressions requiring order of operations, consider using parentheses or breaking calculations into steps.
Q: Can I copy the results?
You can select and copy the result from the display screen. The calculation history also shows previous results that you can reference or copy for use in other applications.