Basic Calculator
Simple arithmetic calculations with addition, subtraction, multiplication, and division in an intuitive interface. Perfect for quick math operations, daily calculations, and educational use with clear display and memory functions.
Complete Guide: Basic Calculator
Everything you need to know about using this tool effectively
A straightforward arithmetic calculator for adding, subtracting, multiplying, and dividing numbers. Features a calculation history so you can review past operations, a memory function for storing values, and keyboard support for fast input. The calculator runs entirely in your browser with no downloads or sign-ups.
The calculator processes arithmetic expressions by following standard operator precedence: multiplication and division are evaluated before addition and subtraction. Parentheses can be used to group operations and override default precedence. All calculations use floating-point arithmetic with precision handling for decimal results.
Quick math
Handle everyday calculations like splitting bills, tipping, or unit pricing without reaching for a phone app.
Homework help
Students can verify arithmetic work and practice with multi-step problems using parentheses.
Shopping calculations
Compare prices per unit, calculate discounts, or total up a shopping list with the running history.
Office work
Perform quick sums and products during meetings or while reviewing spreadsheets without switching applications.
Enter numbers and operators
Click the on-screen buttons or type directly using your keyboard.
Use memory for repeated values
Store a number with M+ and recall it later with MR for multi-step calculations.
Review your history
Scroll through the calculation history to check past results or copy them for use elsewhere.
Use the keyboard number pad for faster input than clicking buttons
The memory function is useful for holding a subtotal while you calculate other values
Use parentheses to control the order of operations in complex expressions
Click any result in the history to copy it to the clipboard instantly
Does this calculator follow order of operations?
Yes, the calculator follows standard mathematical order of operations (PEMDAS/BODMAS). Multiplication and division are performed before addition and subtraction unless parentheses change the order.
Can I use this calculator on my phone?
Yes, the calculator is fully responsive and works on phones, tablets, and desktop computers. The buttons are sized for touch input on mobile devices.
How does the memory function work?
M+ adds the current number to memory, M- subtracts it from memory, MR recalls the stored value, and MC clears the memory. This lets you hold a value across multiple calculations.
Is there a limit to the number size?
The calculator handles numbers up to JavaScript safe integer limits and supports decimal precision. Results are displayed with reasonable rounding to avoid floating-point artifacts.
Does the calculator store my calculations?
No, the history is stored only in your current browser session. Once you close the tab, all history is cleared. No data is sent to any server.
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