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Fix PowerPoint for Mac Showing Inches Instead of Centimeters in Sonoma
Question details
Users need to use centimeters in PowerPoint for Mac, but the application incorrectly defaults to displaying inches after upgrading to macOS Sonoma.
- Product
- PowerPoint for Mac
- Device & OS
- macOS Sonoma
- Scenario
- Adjusting slide dimensions, margins, or shape sizes using metric units (centimeters) while designing a presentation on macOS Sonoma.
- Observed behavior
- PowerPoint ignores the system's Measurement System settings and forces the display of inches. It incorrectly links the measurement unit to the system language (such as US English) rather than the regional metric preference.
Verify your current macOS regional settings by navigating to Apple menu > System Settings > General > Language & Region, and ensure the Measurement system is set to Metric.
Use the Direct Unit Entry Workaround
Since PowerPoint forces inches based on language settings in Sonoma, you can manually type 'cm' to force the correct metric size without changing system languages.
This is the fastest method to ensure your shapes and slides are accurately sized in centimeters while waiting for an official patch from Microsoft.
Click on the shape, image, or slide dimension you want to resize in your presentation.
In the size input box on the ribbon or format pane, highlight the current measurement in inches and type your desired size followed directly by 'cm' (for example, '5cm').
Hit the Enter key. PowerPoint will automatically convert your metric input and apply the exact size to the object, even though the text box may revert to showing the converted inch equivalent.
Report the Bug via the PowerPoint Feedback Tool
This is a recognized software conflict between macOS Sonoma and Microsoft 365. Reporting it directly ensures the Microsoft development team prioritizes a permanent fix.
Check for System and App Updates
New operating systems often introduce software bugs that are swiftly patched in subsequent minor updates. Keep both macOS and Microsoft 365 updated.
Switch to WPS Office for a Bug-Free Mac Experience
If OS compatibility bugs in Microsoft Office are disrupting your workflow, WPS Office offers a free, lightweight, and highly reliable alternative. It perfectly adapts to macOS regional settings, allowing you to seamlessly design presentations in centimeters without frustrating workarounds.
- 1. Download WPS Office for Mac: Visit the official WPS website and download the latest macOS version.
- 2. Install the Application: Open the downloaded file and drag the WPS Office icon into your Applications folder.
- 3. Open Your Presentation: Launch WPS Presentation, open your .pptx file, and continue editing with fully accurate centimeter measurements.
Frequently Asked Questions
Why did my measurement units change after updating to macOS Sonoma?
In macOS Sonoma, a compatibility bug causes PowerPoint to prioritize the system's primary preferred language (like US English) over the dedicated 'Measurement System' setting. Because US English defaults to Imperial units, PowerPoint forces the display of inches.
Will changing my Mac system language fix the centimeter issue in PowerPoint?
Yes, as a workaround, changing your primary macOS language to a region that natively uses the metric system (such as English UK or English Australia) in System Settings > General > Language & Region often forces PowerPoint to display centimeters again.
Does the inch bug affect how my PowerPoint slides print or export to PDF?
No. The issue is strictly a user interface display bug. If you input a measurement like 5cm, the object will print or export at exactly 5 centimeters, even if the settings menu displays the equivalent size of 1.97 inches.
