Most iPhone users will be aware of their device's built-in calculator, but not everyone will know some of the tricks that you can perform with the app that can save you time. Here are some of our favorite tips.

1. Swipe to Delete Numbers

It's a common misconception that if you type the wrong number into the Calculator app, you have to start the whole sum all over again. Happily, that isn't the case: Simply swipe right or left with a finger across the number display to remove the last number you typed, and repeat the action if necessary to remove several numbers.

calculator

2. Scientific calculator

The default calculator app includes a built-in scientific calculator that you can use to perform logarithms, square roots, trigonometric calculations, and more advanced math equations.

calculator
To access the scientific calculator, simply rotate your iPhone to landscape mode. If it's not showing up, make sure the portrait orientation lock is disabled in Control Center. To switch back to the regular calculator, rotate your phone to portrait mode.

3. Copy and Paste

You don't need to memorize the results of your calculations to input them into other apps. Use the clipboard functions instead - just long press on the number field to copy or paste the result.

calculator

4. Copy Last Result

If you've switched to another app, you can still quickly paste the last figure that you calculated without returning to the calculator to copy it.

calculator
Using either a swipe up or a swipe down, launch the Control Center on your iPhone, then long press the Calculator button, and you'll see a handy option to Copy Last Result.

5. Spotlight Calculations

Did you know that calculator functions are built into Spotlight Search on your iPhone?

spotlight
Simply swipe down from the Home screen to bring up Spotlight, and you can perform basic calculations by typing them directly into the Search field at the top of the screen without having to open the Calculator app.

Bonus Tip for Apple Watch Users

The Calculator app on Apple Watch comes with a couple of additional features that make short work of calculating how much you should tip and how much each person in a group owes if you're splitting a bill.

The steps below show you how it's done. Note that the two features can be used together, but you can also use them independently by selecting a 0% tip and changing the number of people, or changing the tip and leaving the People field set to 1.

  1. Launch the Calculator app on your Apple Watch.
  2. Enter the total amount of the bill.
  3. Tap the TIP button in the top-right corner, just left of the divide button.
  4. With the Tip field highlighted in green, turn your watch's Digital Crown to change the percentage.
  5. To split the bill between a group of people, tap People and then use the Digital Crown to change the number (the maximum is 50).apple watch split the bill tip

You'll see the total amount below the two fields change to reflect your tip adjustments, and the amount below that will change depending on how many people are paying.

Here's another little tip: If you don't use the TIP function, you can actually change the button on the calculator layout to a standard percentage (%) function. Simply press firmly on the main calculator screen and tap either Tip Function or Percent.

Top Rated Comments

osta.doc Avatar
63 months ago
Why don’t go ahead and add this calculator app to the iPads? I had no idea that Apple didn’t install calculators on iPads, until I bought an iPad Pro a month ago.
Score: 22 Votes (Like | Disagree)
glenthompson Avatar
63 months ago
For us long time HP calculator users the lack of RPN makes it a no go. I willingly pay for 3rd party calculators with RPN.
Score: 9 Votes (Like | Disagree)
femike Avatar
63 months ago
Any news on the Apple's calculator and weather app for the iPad? After 10 years of developer time it should be almost ready by now.
Score: 8 Votes (Like | Disagree)
Mr. Awesome Avatar
63 months ago

just had to look up RPN in Wikipedia... ?
Lack of Calculator on IPad is worse - to me ?
According to Siri knowledge, it stands for Radio Philippines Network.
Score: 6 Votes (Like | Disagree)
citysnaps Avatar
63 months ago
I've pretty much forgotten how to use a non-RPN calculator.
Score: 6 Votes (Like | Disagree)
thisisnotmyname Avatar
63 months ago
article author: what did you buy for $72.5k that you are paying a 20% tip on?
Score: 4 Votes (Like | Disagree)

Popular Stories

CarPlay Hero

Apple Releases Wireless CarPlay Fix

Wednesday April 16, 2025 11:28 am PDT by
If you have been experiencing issues with wireless CarPlay in your vehicle lately, it was likely due to a software bug that has now been fixed. Apple released iOS 18.4.1 today, and the update's release notes say it "addresses a rare issue that prevents wireless CarPlay connection in certain vehicles." If wireless CarPlay was acting up for you, updating your iPhone to iOS 18.4.1 should...
AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Friday April 18, 2025 5:16 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Beyond iPhone 13 Better Triad

Apple's 20th Anniversary iPhone May Finally Go All Screen

Tuesday April 15, 2025 6:31 am PDT by
Apple is preparing a "bold" new iPhone Pro model for the iPhone's 20th anniversary in 2027, according to Bloomberg's Mark Gurman. As part of what's being described as a "major shake-up," Apple is said to be developing a design that makes more extensive use of glass – and this could point directly to the display itself. Here's the case for Apple releasing a truly all-screen iPhone with no...
maxresdefault

iPhone 17 Pro Launching Later This Year With These 12 New Features

Sunday April 13, 2025 7:52 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Subscribe to the MacRumors YouTube channel for more videos. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and ...
iOS 19 Roundup Feature

iOS 19 Will Add These New Features to Your iPhone

Tuesday April 15, 2025 7:37 am PDT by
The first iOS 19 beta is less than two months away, and there are already a handful of new features that are expected with the update. Apple should release the first iOS 19 beta to developers immediately following the WWDC 2025 keynote, which is scheduled for Monday, June 9. Following beta testing, the update should be released to the general public in September. Below, we recap the key...
tvOS 18 Thumb 1

Apple Releases tvOS 18.4.1

Wednesday April 16, 2025 10:04 am PDT by
Apple today released tvOS 18.4.1, a minor update to the tvOS 18 operating system that came out last September. tvOS 18.4.1 comes two weeks after Apple released tvOS 18.4, and it is available for the Apple TV 4K and Apple TV HD models. tvOS 18.4.1 can be downloaded using the Settings app on the ‌Apple TV‌. Open up Settings and go to System > Software Update to get the new software....
iPhone Security Feature 25

Five iPhone Security Features You Should Be Using

Wednesday April 16, 2025 4:15 pm PDT by
Apple has quite a few security features that it's added to iPhones, iPads, and Macs over the years. Now more than ever, it's important to make sure you're taking advantage of the built-in security tools that are available to keep yourself and your data safe, so we've rounded up a list of the most important options. If you don't already have these enabled, you might want to consider turning...
vision air cable

Images of Apple 'Vision Air' Power Cable Emerge Online

Thursday April 17, 2025 5:55 am PDT by
More images of a redesigned power cable allegedly for a future Apple "Vision Air" headset were today shared online by the prototype collector and leaker known as "Kosutami." Yesterday, the leaker explained that the Apple "Vision Air" will feature a thinner design and switch the battery enclosure and several of its internal structures to titanium to reduce the device's overall weight. Most of ...