Compare Fonts → Sans Serif → IBM Plex Sans vs Asap

IBM Plex Sans vs Asap

Both are sans serif faces on Google Fonts. Asap has the larger x-height, so it looks bigger at the same size. IBM Plex Sans takes more horizontal space.

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IBM Plex Sans

Handgloves & Quartz Jockeys

The quick brown fox jumps over the lazy dog. Pack my box with five dozen liquor jugs, then ship it to 1,842 Grove Street by 9:30 AM.

Asap

Handgloves & Quartz Jockeys

The quick brown fox jumps over the lazy dog. Pack my box with five dozen liquor jugs, then ship it to 1,842 Grove Street by 9:30 AM.

Measured differences

Measured from the font files. Heights and widths are shown as a share of the font size, so they compare directly at any point size.
Measurement	IBM Plex Sans	Asap	Difference
x-heightHeight of lowercase letters, as a share of the font size. Higher reads larger at the same point size.	51.6%	52.3%	0.7%
Cap heightHeight of capitals, as a share of the font size.	69.8%	70.0%	0.2%
x-height to cap ratioProportion of lowercase to uppercase. Higher feels more modern and open.	0.74	0.75	0.01
Stroke weightMeasured thickness of a vertical stroke. Higher is heavier on the page.	8.6%	8.8%	0.2%
Stroke contrastHorizontal stroke divided by vertical. 1.0 is even; below 0.5 means strong thick-thin modulation.	0.83	0.82	0.01
Average character widthMean lowercase advance. Higher takes more horizontal space.	50.5%	49.9%	0.6%

Where they diverge most

x-height: IBM Plex Sans measures 51.6%, Asap measures 52.3%. Height of lowercase letters, as a share of the font size. Higher reads larger at the same point size.
Average character width: IBM Plex Sans measures 50.5%, Asap measures 49.9%. Mean lowercase advance. Higher takes more horizontal space.
Stroke weight: IBM Plex Sans measures 8.6%, Asap measures 8.8%. Measured thickness of a vertical stroke. Higher is heavier on the page.

At a glance

	IBM Plex Sans	Asap
Category	Sans Serif	Sans Serif
Weights	7	9
Variable axes	2	2
Language subsets	6	3
Designer	Mike Abbink	Omnibus-Type