Sans serif · Paul D. Hunt
Source Sans 3
Find the font. Find its kind.
CSSfont-family: 'Source Sans 3', sans-serif; font-weight: 400; font-style: normal; line-height: 1.1;
Source Sans 3 is a free sans serif by Paul D. Hunt, on Google Fonts since 2021. Among the 697 sans serifs on FontKind, Source Sans 3 has an x-height shorter than 79%, is narrower than 69% and, at its regular weight, is of average darkness. Its thickest strokes are 1.2 times its thinnest: nearly even strokes.
01 / Light table
Laid on top of Nebula Sans
Source Sans 3 on one light table with its two closest fonts, Nebula Sans (80 out of 100) and Tajawal (77). Nebula Sans is 16% wider and 18% lighter, with an x-height 9% taller; Tajawal is 15% lighter, with an x-height 7% shorter.
Source Sans 3 and Nebula Sans laid on top of each other.
Ink shared with Source Sans 3Nebula Sans…
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.
02 / Letters
The Source Sans 3 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 / Weights
Source Sans 3 in 8 weights
8 weights, 200–900, with italics · variable from 200 to 900
Variable weight, 200 to 900
- 200 Extra light, with its italic
- 300 Light, with its italic
- 400 Regular, with its italic
- 500 Medium, with its italic
- 600 Semibold, with its italic
- 700 Bold, with its italic
- 800 Extra bold, with its italic
- 900 Black, with its italic
04 / Facts
Who made Source Sans 3, and can you use it?
- Designer
- Paul D. Hunt
- Kind
- Sans serif
- Styles
- 8 weights, 200–900, with italics
- Variable axes
- Weight 200–900
- On Google Fonts since
- 2021
- Character sets
- cyrillic, cyrillic-ext, greek, greek-ext, latin, latin-ext, 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, under another name. Not as “Source”: the licence reserves the name.
- Sharing the files
- Yes, but not for sale. With the licence.
Source Sans 3 is under the SIL Open Font License 1.1. This is a plain summary, not legal advice: the licence itself decides.
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 Source Sans 3, or upload it with Canva Pro. Canva’s help
- Cricut
- Once installed. Design Space lists Source Sans 3 under System. Fonts for Cricut →
From each app’s own font list or help pages, read on 28 September 2026.
05 / Measurements
Source Sans 3, measured
Taken from the font file's own outlines, regular style
- x-height
- 48.6% of the emlowercase x
- Cap height
- 65.6% of the emcapitals
- x / cap
- 0.74lowercase against capitals
- Width
- 47.5% of the emaverage lowercase
- Ink
- 41%letter box filled
- Contrast
- 1.24 : 1nearly even strokes
Where it stands among sans serifs
Ranked against all 697 sans serifs on FontKind
x-heightSmaller than 79% of sans serifs
WidthNarrower than 69% of sans serifs
InkNear the middle of sans serifs
ContrastMore contrast than 65% of sans serifs
06 / Similar fonts
Fonts similar to Source Sans 3
Matched letter by letter · its own family apart
Source Sans 3's letters under another nameVartaNarnoorKedebideri
- Nebula Sans8016% wider · x-height 9% taller · 18% lighter
- Tajawal7715% lighter · x-height 7% shorter
- Mukta778% heavier · x-height 3% shorter
- Epunda Sans754% narrower
- Carlito744% narrower
- CMU Sans Serif70x-height 8% shorter · 4% narrower
All 100 fonts similar to Source Sans 3 →Compare side by side →Get Source Sans 3 on Google Fonts
07 / Swap
Swap Source Sans 3 without a jump
Running text within 3% of the width, x-height within 5%
- Mukta77text 0.7% wider · x-height 3.3% shorter
- Epunda Sans75text 2.1% narrower · x-height 2.9% taller
- Carlito74text 2.1% narrower · x-height 1.8% shorter
- Skeena Indigenous69text 0.5% narrower · x-height 5.0% shorter
- Puritan68text 0.8% wider · x-height 4.5% taller
- Gudea65text 1.8% wider · x-height 3.1% taller
Fallback while it loads
Until Source Sans 3 loads, this sets Arial in its place at 94.7% of its size, so running text keeps Source Sans 3’s width and lines keep their height: nothing moves when it arrives.
@font-face {
font-family: 'Source Sans 3 Fallback';
src: local('Arial');
size-adjust: 94.72%;
ascent-override: 108.11%;
descent-override: 42.23%;
line-gap-override: 0.00%;
}
font-family: 'Source Sans 3', 'Source Sans 3 Fallback', sans-serif;08 / Pairs
Used together with Source Sans 3
Of the 32,125 home pages that load Source Sans 3, the share that load each font too, and how that compares with chance.
Same page, not which sets the headings · HTTP Archive , 1 September 2026
- Exo 27.6%2,434 sites · 24× chance
- Montserrat7.1%2,286 sites · 0.5× chance
- Roboto6.4%2,057 sites · 0.3× chance
- Open Sans6.3%2,036 sites · 0.4× chance
- Playfair Display5.8%1,876 sites · 2.2× chance
- Poppins4.3%1,371 sites · 0.4× chance
More than chanceMs Madi 25×Exo 2 24×Source Serif 4 19×
Fonts that go with Source Sans 3: pairs and trios →The pairs sites choose most →
Pair checkerSource Sans 3 + any fontHow many of the 6,276,350 home pages counted load the two together, and how that compares with chance.Check this font with any other09 / Questions
Questions about Source Sans 3
Answered from its licence, Google Fonts and each app’s own font list
Is Source Sans 3 free for commercial use?
Yes. Source Sans 3 is under the SIL Open Font License 1.1 , which allows commercial use at any scale, logos, websites, apps and PDFs included; a changed version may not be called “Source”.
How do I download and install Source Sans 3?
FontKind doesn’t host Source Sans 3’s files: it comes free from Google Fonts . On its page there, choose Get font, then Download all, and unzip the file. It holds two variable files, one for the uprights and one for the italics, and a static folder with a file per style: install one set or the other, not both. On Windows or a Mac, double-click each font file and choose Install, then restart any app that was open, Word included.
Is Source Sans 3 in Microsoft Word?
Not until you install it: Source Sans 3 isn’t one of Microsoft 365’s cloud fonts. Installed, it is in Word’s font menu and PowerPoint’s. On Windows, its weights beyond Regular and Bold show as fonts of their own, such as Source Sans 3 ExtraLight and Source Sans 3 Black. For someone who hasn’t installed it, turn on Embed fonts in the file in Word’s save options: its licence allows that.
Is Source Sans 3 in Google Docs?
Most likely. Search for Source Sans 3 under More fonts in the font menu of Docs; added there, it is in Sheets and Slides too.
Is Source Sans 3 in Figma?
Yes: Source Sans 3 is in Figma’s font menu with all eight weights and their italics, in the browser and the desktop app, with nothing to install.
How many weights does Source Sans 3 have?
Source Sans 3 comes in eight weights, from ExtraLight (200) to Black (900), each with an italic. It is a variable font: it takes any weight from 200 to 900.
Who designed Source Sans 3?
Source Sans 3 was designed by Paul D. Hunt. It has been on Google Fonts since September 2021. Paul D. Hunt also made Source Code Pro and Genjyuu Gothic.
What fonts are similar to Source Sans 3?
The closest in our letter-by-letter match are Nebula Sans (80), Tajawal (77) and Mukta (77), out of 100. Next to Source Sans 3, Nebula Sans is 16% wider and 18% lighter, with an x-height 9% taller. See all 100 fonts like Source Sans 3.