Use the basic calculator on Mac
You can perform simple arithmetic calculations with a basic calculator.
If your Mac has a Touch Bar, you can easily do quick calculations—without even moving the pointer.
Siri: Say something like: “What’s 74 times 9?” or “What’s 18 percent of 225?” Learn how to use Siri.
Tip: To learn a key’s function, hold the pointer over the key to see its help tag.
Switch to the basic calculator
Go to the Calculator app on your Mac.
Do one of the following:
Choose View > Basic in the menu bar.
While using the scientific or programmer calculator, click , then choose Basic.
Press Command-1.
Clear the display
Go to the Calculator app on your Mac.
Enter a digit or calculation.
Do one of the following:
Delete the expression: Click the All Clear (AC) key, or click and hold .
Delete the last digit: If you make a mistake when you enter a number, click .
Round results or increase precision
When you round your results, Calculator stores the full value and displays the rounded value.
Go to the Calculator app on your Mac.
Choose View > Decimal Places in the menu bar, then choose the number of digits you want to show after the decimal.
Trailing zeros never appear.
Note: Use caution when rounding, as your results may not be as precise as they should be. For example, the calculator returns 10 (rather than 9.9) when you enter “99 ÷ 10 =” with decimal places set to zero.
Show commas in large numbers
Go to the Calculator app on your Mac.
Choose View > Show Thousands Separators in the menu bar.
Tip: You can also perform calculations—and dictate them—in Spotlight on Mac. See Search for anything with Spotlight.