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Calculates width of text.

Component Version macOS Windows Linux Server iOS SDK
Font 6.5 ✅ Yes ✅ Yes ❌ No ✅ Yes, on macOS and Windows ✅ Yes
MBS( "Font.CalculateTextWidth"; Text { ; Font; Size } )   More


Parameter Description Example Flags
Text The text to measure. "Hello World"
Font The font name.
Using System font in case of empty parameter.
"Arial" Optional
Size The font size to use.
Default is system font size.
12 Optional


Returns number or error.


Calculates width of text.
The plugin uses system font rendering to calculate width. This may be different from what FileMaker renders with it's own engine.
You can use the measured size to detect if text fits a field.

Mac result in logical points, but on Windows in pixels.


Calculate width of Hello World:

MBS( "Font.CalculateTextWidth"; "Hello World" )
# e.g. 70.9 on Mac and 77 on Windows.

Calculate with Arial

MBS( "Font.CalculateTextWidth"; "Hello World"; "Arial"; 12 )
# e.g. 61 on Windows, 61,7 on Mac

See also

Release notes

Example Databases

Blog Entries

This function checks for a license.

Created 21st October 2016, last changed 16th November 2018

Font.CalculateTextHeight - Font.Deactivate