To use parentheses on the iPhone Calculator, open the Calculator app, tap the Change Mode button (the calculator icon), and tap Scientific. The scientific keypad includes the ( and ) keys, so you can group part of a calculation and have it worked out first.
These steps follow Apple’s iPhone User Guide pages for the scientific calculator and the basic calculator in iOS 27, and they also match iOS 18 and iOS 26. The basic keypad doesn’t have parentheses, which is why they seem to be missing at first.
Why You Need Parentheses on the iPhone Calculator
Apple notes that the Calculator app uses the standard order of operations, so multiplication and division are done before addition and subtraction. If you want an addition or subtraction worked out first, put it inside parentheses. The scientific calculator also shows the complete expression, including parentheses, before you tap the equal sign, so you can check your grouping before you get an answer.
How to Use Parentheses on the iPhone Calculator
- Open the Calculator app on your iPhone.
- Tap the Change Mode button (the calculator icon) in the lower-left corner of the keypad. A short menu appears.
- Tap Scientific. The keypad gets smaller and extra rows of keys appear above the numbers.
- Tap ( to open a group, enter the numbers and operators that belong together, then tap ) to close it. The display shows each parenthesis as you type it.
- Finish the rest of the calculation and tap =.
Calculator works out the part inside the parentheses first, then uses that value in the rest of the expression.
On older versions of iOS, the scientific calculator appeared when you turned your iPhone sideways. If that’s what you’re used to, the Change Mode button now does the same job without turning the phone, and you can still keep Calculator handy by adding it to Control Center.
Example: Why Parentheses Change the Answer
Say you want to add 4 and 6, then multiply the total by 3.
- Without parentheses: 4 + 6 × 3 = 22, because Calculator multiplies 6 × 3 first, then adds 4.
- With parentheses: (4 + 6) × 3 = 30, because Calculator adds 4 + 6 first, then multiplies by 3.
You get the answer you meant, without having to do the calculation in two steps.
More everyday examples
| What you want | Type this | Answer |
|---|---|---|
| Split a $45 bill plus a $9 tip among 3 people | (45 + 9) ÷ 3 | 18 |
| Two groups multiplied together | (5 + 3) × (2 + 2) | 32 |
| Average of three test scores | (82 + 91 + 76) ÷ 3 | 83 |
| Price after a $5 discount on 3 items | (12 − 5) × 3 | 21 |
Without the parentheses, the first row would give 48, because Calculator would divide 9 by 3 before adding 45.
Tips for using parentheses
- You can put parentheses inside other parentheses, such as ((2 + 3) × 4) − 1, which equals 19. Close the inner group first, and make sure every ( has a matching ).
- To use a negative number inside a group, type the number, then tap +/− to make it negative, for example (−5 + 8) × 2 = 6.
- To fix a mistake, tap the Delete key to remove the last digit, or tap C to clear the number you last entered. Tap AC (All Clear) to clear the whole expression.
- To copy the answer, touch and hold the result in the display, then tap Copy.
- To check an earlier calculation, tap the History button (the list icon) at the top left of Calculator. Your recent expressions appear with their results, as Apple’s previous calculations page describes.
Other Ways to Do Math With Parentheses on iPhone
Calculator’s Math Notes mode lets you write or type expressions, including parentheses, and evaluate them. To open it, tap the Change Mode button, then tap Math Notes. Type an expression that ends with an equal sign, such as (4 + 6) × 3 =, and the answer appears. It’s useful when you want to see several calculations at once or reuse values.
The scientific calculator also has keys for powers, roots, logarithms, and trigonometric functions. Tap the 2nd key near the left to see more functions.
How to Switch Back to the Basic Calculator
Tap the Change Mode button and tap Basic. The parentheses keys disappear, and the keypad returns to the larger standard buttons.
Calculate With Fractions Using Parentheses
Switch Calculator to Scientific with the Change Mode button and tap AC to start a clean expression. Type each fraction as (numerator ÷ denominator), then put the operation between the groups. For example, (1 ÷ 2) + (3 ÷ 4) followed by = gives 1.25, which is 5/4 or 1¼.
If Parentheses or Scientific Mode Won’t Show
- You only see the basic keypad: tap the Change Mode button and choose Scientific. Turning the phone sideways isn’t required.
- You don’t see a Change Mode button: your iPhone may be on iOS 17 or earlier. Turn off rotation lock in Control Center and turn the iPhone sideways to open the scientific keypad, or update under Settings > General > Software Update.
- You can’t find the Calculator app: swipe down on the Home Screen and search for Calculator, or look in the App Library. If it was deleted, search for Calculator in the App Store, make sure Apple is the developer, and download it again.
- The answer looks wrong: check the expression in the display before you tap =. A missing ) or a group closed in the wrong place changes what gets calculated first.
Some websites say tapping +/− reveals the parentheses keys. It doesn’t: +/− only switches a number between positive and negative.
iPhone Calculator Questions
Why don’t I see parentheses on my iPhone calculator?
The basic calculator doesn’t have them. Switch to the scientific calculator with the Change Mode button to see the ( and ) keys.
Does the iPhone calculator follow the order of operations?
Yes. Calculator uses the standard order of operations, so use parentheses around anything you want calculated first.
Can I use more than one set of parentheses?
Yes. You can use several groups side by side, like (5 + 3) × (2 + 2), or put one group inside another.
If you use your iPhone’s other built-in tools often, you might also want to know how to turn off the flashlight on iPhone.
Need square roots or trig functions? Those are on the scientific calculator on an iPhone.
Matthew Burleigh is the founder, head writer, and editor of Solve Your Tech, which he launched in 2012. He has written technology tutorials since 2008 and worked in IT since 2003, including small-business support, IT management, and consulting. He holds Bachelor’s and Master’s degrees in Computer Science from Arizona State University.
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