ios18 calculator not accurate

The calculations on ios 18 are not correct...


example: 60,751.85 + 163,333.42 = 224,085.30 per ios 18.


The actual correct number is 224085.27. I dont know if iOS is rounding up for some reason, but this is simple addition, and iOS is not getting it right.

iPhone 14 Pro Max

Posted on Sep 30, 2024 1:34 PM

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Question marked as Top-ranking reply

Posted on Oct 11, 2024 8:22 AM

Twitchy303 wrote:

The calculations on ios 18 are not correct...

example: 60,751.85 + 163,333.42 = 224,085.30 per ios 18.

The actual correct number is 224085.27. I dont know if iOS is rounding up for some reason, but this is simple addition, and iOS is not getting it right.

Very late to the party, but....


No, the calculator is not wrong. The Basic Calculator rounds to one digit past the decimal. Enter that same series of numbers, press "=" then change to Scientific Calculator (tap the small calculator in the bottom left and select). You'll see both digits and they are correct.

8 replies
Question marked as Top-ranking reply

Oct 11, 2024 8:22 AM in response to Twitchy303

Twitchy303 wrote:

The calculations on ios 18 are not correct...

example: 60,751.85 + 163,333.42 = 224,085.30 per ios 18.

The actual correct number is 224085.27. I dont know if iOS is rounding up for some reason, but this is simple addition, and iOS is not getting it right.

Very late to the party, but....


No, the calculator is not wrong. The Basic Calculator rounds to one digit past the decimal. Enter that same series of numbers, press "=" then change to Scientific Calculator (tap the small calculator in the bottom left and select). You'll see both digits and they are correct.

Oct 11, 2024 8:59 AM in response to Twitchy303

Twitchy303 wrote:

The calculations on ios 18 are not correct...

example: 60,751.85 + 163,333.42 = 224,085.30 per ios 18.

The actual correct number is 224085.27. I dont know if iOS is rounding up for some reason, but this is simple addition, and iOS is not getting it right.


iOS 18 on iPhone 14 Pro:



On an XR the result is 224,085.3.


It’s a function of screen size and font. If the result doesn’t fit it will round. But try turning your phone to Landscape and you will see the unrounded result.


iOS 18 on iPhone XR

Oct 4, 2024 5:52 AM in response to Twitchy303

Same here. I was calculating some totals in a report written by a colleague and kept getting a result that was $.02 off. I thought her calculations were wrong, so I asked her to double check her work. Turns out, it was my work iPhone which had recently been updated. I added the amounts using an old handheld calculator and confirmed that the total summed by the iPhone running iOS 18 was incorrect. My personal phone, which is still running iOS 17.6.1 calculates the correct totals, so it's definitely linked to the iOS18 update.

Phone running iOS18: $110,765.52+$185+$60,000+$71,000.95+$20,018.35=$261,969.80

Phone running iOS17.6.1: $110,765.52+$185+$60,000+$71,000.95+$20,018.35=$261,969.82 (the correct amount)

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ios18 calculator not accurate

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