Compare Fonts → Sans Serif → Nunito Sans vs Rethink Sans

Nunito Sans vs Rethink Sans

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

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Nunito 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.

Rethink 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.

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	Nunito Sans	Rethink Sans	Difference
x-heightHeight of lowercase letters, as a share of the font size. Higher reads larger at the same point size.	48.6%	49.6%	1.0%
Cap heightHeight of capitals, as a share of the font size.	70.5%	70.0%	0.5%
x-height to cap ratioProportion of lowercase to uppercase. Higher feels more modern and open.	0.69	0.71	0.02
Stroke weightMeasured thickness of a vertical stroke. Higher is heavier on the page.	8.2%	8.5%	0.3%
Stroke contrastHorizontal stroke divided by vertical. 1.0 is even; below 0.5 means strong thick-thin modulation.	0.79	0.86	0.07
Average character widthMean lowercase advance. Higher takes more horizontal space.	50.7%	52.1%	1.3%

Where they diverge most

Stroke contrast: Nunito Sans measures 0.79, Rethink Sans measures 0.86. Horizontal stroke divided by vertical. 1.0 is even; below 0.5 means strong thick-thin modulation.
Average character width: Nunito Sans measures 50.7%, Rethink Sans measures 52.1%. Mean lowercase advance. Higher takes more horizontal space.
x-height: Nunito Sans measures 48.6%, Rethink Sans measures 49.6%. Height of lowercase letters, as a share of the font size. Higher reads larger at the same point size.

At a glance

	Nunito Sans	Rethink Sans
Category	Sans Serif	Sans Serif
Weights	9	5
Variable axes	4	1
Language subsets	5	2
Designer	Vernon Adams	Hans Thiessen