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Display · Kostas Bartsokas

Oi

Case
72 px
Weight400 RegularThe only weight it comes in
0 em
1.10

Find the font. Find its kind.

CSSfont-family: 'Oi', sans-serif; font-weight: 400; font-style: normal; line-height: 1.1;

Oi is a free display font by Kostas Bartsokas, on Google Fonts since 2021. Among the 554 display faces on FontKind, Oi has an x-height taller than 91%, is wider than 98% and, at its regular weight, is darker than 99%. Its thickest strokes are 1.3 times its thinnest: moderate stroke contrast.

Compare with Sigmar →Compare with another font

01 / Light table

Laid on top of Sigmar

Oi on one light table with its two closest fonts, Sigmar (74 out of 100) and Chango (73). Sigmar is 35% narrower, with an x-height 16% shorter and more stroke contrast; Chango is 20% narrower, with an x-height 29% shorter and more stroke contrast.

Layout
Letters
Show

Oi and Sigmar laid on top of each other.

Ink shared with OiSigmar…

Most different letters first; the figure is the share of ink the fonts have in common. Where the fonts agree the letters cancel to black: every white sliver is a real difference.

Open in the compare tool →

02 / Letters

The Oi alphabet

Capitals, lowercase, figures and signs · weight 400

Tap the letters you like, here and in other fonts, to find the fonts whose letters look most like them.

  • &
  • ?
  • !
  • @
  • %
  • (
  • )

03 / Sizes

Oi at every size

1 weight (400) · six sizes, in your words

  • 12 px
  • 16 px
  • 24 px
  • 36 px
  • 48 px
  • 72 px

04 / Facts

Who made Oi, and can you use it?

Designer
Kostas Bartsokas
Kind
Display
Styles
1 weight (400)
On Google Fonts since
2021
Character sets
arabic, cyrillic, cyrillic-ext, greek, latin, latin-ext, tamil, vietnamese
Licence
SIL Open Font License 1.1

Can I use it?

Commercial use
Yes.
Logos
Yes.
Websites and apps
Yes. Self-hosted or loaded from Google Fonts.
PDFs and documents
Yes.
Changes
Yes.
Sharing the files
Yes, but not for sale. With the licence.

Oi is under the SIL Open Font License 1.1. This is a plain summary, not legal advice: the licence itself decides.

What each licence allows →

Read the licence

Already in your apps?

Google Docs
Most likely. Under More fonts, in Sheets and Slides too. Google’s guide
Word, PowerPoint
No. Install it from Google Fonts first. Microsoft’s list
Figma
Yes. Built in, nothing to install. Figma’s help
Canva
Not verified. Search its font menu for Oi, or upload it with Canva Pro. Canva’s help
Cricut
Once installed. Design Space lists Oi under System. Fonts for Cricut →

From each app’s own font list or help pages, read on 28 September 2026.

How each app gets its fonts →

Get Oi on Google Fonts

05 / Measurements

Oi, measured

Taken from the font file's own outlines, regular style

Hxgp in Oi. Lines at the measured heights, as a share of the em · The parts of a letter, named
x-height
71.3% of the emlowercase x
Cap height
77.5% of the emcapitals
x / cap
0.92lowercase against capitals
Width
95.7% of the emaverage lowercase
Ink
92%letter box filled
Contrast
1.33 : 1moderate stroke contrast

How we measure →

Where it stands among display faces

Ranked against all 554 display faces on FontKind

  • x-heightLarger than 91% of display faces

  • WidthWider than 98% of display faces

  • InkDarker than 99% of display faces

  • ContrastNear the middle of display faces

07 / Swap

Swap Oi without a jump

Running text within 3% of the width, x-height within 5%

Fallback while it loads

Until Oi loads, this sets Arial in its place at 183.9% of its size, so running text keeps Oi’s width and lines keep their height: nothing moves when it arrives.

@font-face {
  font-family: 'Oi Fallback';
  src: local('Arial');
  size-adjust: 183.93%;
  ascent-override: 58.18%;
  descent-override: 27.73%;
  line-gap-override: 0.00%;
}

font-family: 'Oi', 'Oi Fallback', sans-serif;

08 / Questions

Questions about Oi

Answered from its licence, Google Fonts and each app’s own font list

Is Oi free for commercial use?

Yes. Oi is under the SIL Open Font License 1.1 , which allows commercial use at any scale, logos, websites, apps and PDFs included.

How do I download and install Oi?

FontKind doesn’t host Oi’s files: it comes free from Google Fonts . On its page there, choose Get font, then Download all, and unzip the file. It holds a single font file. On Windows or a Mac, double-click each font file and choose Install, then restart any app that was open, Word included.

Is Oi in Microsoft Word?

Not until you install it: Oi isn’t one of Microsoft 365’s cloud fonts. Installed, it is in Word’s font menu and PowerPoint’s. For someone who hasn’t installed it, turn on Embed fonts in the file in Word’s save options: its licence allows that.

Is Oi in Google Docs?

Most likely. Search for Oi under More fonts in the font menu of Docs; added there, it is in Sheets and Slides too.

Is Oi in Figma?

Yes: Oi is in Figma’s font menu, in the browser and the desktop app, with nothing to install.

How many weights does Oi have?

Oi comes in one weight, Regular (400). Ask for bold and most apps thicken the letters themselves: a faux bold, not a drawn one.

Who designed Oi?

Oi was designed by Kostas Bartsokas. It has been on Google Fonts since February 2021. Kostas Bartsokas also made Playpen Sans and Commissioner.

What fonts are similar to Oi?

The closest in our letter-by-letter match are Sigmar (74), Chango (73) and Sigmar One (72), out of 100. Next to Oi, Sigmar is 35% narrower, with an x-height 16% shorter and more stroke contrast. See all 100 fonts like Oi.