How do I use the memory buttons (M+, M-, MR, MC)?

MC clears the system memory. M+ adds the current display value into memory. M- subtracts it. MR recalls the stored memory value to the display. This is highly useful for running totals, like summing up a list of grocery items.

Does this calculator follow the order of operations (PEMDAS)?

No. Like a traditional handheld desk calculator, this tool processes mathematical calculations sequentially as they are entered. For example, 2 + 3 × 4 is calculated as (2 + 3) = 5, then 5 × 4 = 20.

Can I use my physical computer keyboard?

Yes. The calculator is fully bound to your keyboard. You can use the numpad, operators (+, -, *, /), the Enter key to solve, and the Backspace key to delete digits.

Basic Calculator | Online & Free with Memory Functions

The Ultimate Guide to the Basic Calculator

In a world of highly complex digital tools, sometimes you just need a reliable, simple utility that works instantly. A basic calculator is the digital equivalent of the trusted handheld desktop device we've all used, designed specifically for quick, straightforward arithmetic without the clutter of scientific functions.

What Defines a Basic Calculator?

A basic calculator is engineered to execute the four fundamental arithmetic operations: addition (+), subtraction (-), multiplication (×), and division (÷). Unlike an advanced scientific calculator, it processes calculations sequentially exactly as they are entered.

For example, if you input 2 + 3 × 4, this basic calculator will solve (2 + 3) first, resulting in 5, and then multiply by 4 to get 20. This sequential logic makes it perfect for everyday tasks like balancing a checkbook, calculating a tip, or totaling a grocery list.

Mastering Memory Functions (M+, M-, MR, MC)

Our online calculator includes a standard Memory cache, which is incredibly useful for maintaining a running total across multiple, separate equations.

MC (Memory Clear): Wipes the saved memory cache back to zero.
M+ (Memory Add): Takes the number currently on your display and adds it to the hidden memory cache.
M- (Memory Subtract): Takes the number currently on your display and subtracts it from the hidden memory cache.
MR (Memory Recall): Instantly pastes the total value stored in the memory cache onto your display screen.

Example: Tallying Expenses

Imagine you bought three items costing $12.50, $25.00, and $7.75, but you had to calculate tax on each one separately before finding the total. To find the grand total using memory:

Press AC to clear the screen, then press MC to ensure memory is empty.
Calculate your first item with tax, then press M+.
Calculate your second item with tax, then press M+.
Calculate your third item with tax, then press M+.
Finally, press MR (Memory Recall) to pull up the grand total of all three calculations combined.

Pro-Tip: Keyboard Shortcuts

For maximum speed, this calculator is fully bound to your physical keyboard. You do not need to click the buttons with your mouse.

Numpad / Numbers: Enter digits directly.
Operators: Use the +, -, *, and / keys.
Solve: Press the Enter or Return key to calculate the final result.
Clear: Press the Escape key to trigger the AC (All Clear) function.
Delete: Press the Backspace key to delete a single digit.