Serif · Tiro Typeworks
Castoro
Find the font. Find its kind.
CSSfont-family: 'Castoro', serif; font-weight: 400; font-style: normal; line-height: 1.1;
Castoro is a free serif by Tiro Typeworks, John Hudson, Paul Hanslow and Kaja Słojewska, on Google Fonts since 2020. Among the 354 serifs on FontKind, Castoro has an average x-height, is of average width and, at its regular weight, is darker than 81%. Its thickest strokes are 3.0 times its thinnest: high stroke contrast.
01 / Light table
Laid on top of Jacques Francois
Castoro on one light table with its two closest fonts, Jacques Francois (85 out of 100) and Lusitana (82). Jacques Francois is 9% lighter, with an x-height 9% shorter; Lusitana is 6% narrower, with an x-height 9% shorter and less stroke contrast.
Castoro and Jacques Francois laid on top of each other.
Ink shared with CastoroJacques Francois…
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 Castoro 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 / Styles
Castoro, upright and italic
1 weight (400), with italics
- 400 Regular, with its italic
04 / Facts
Who made Castoro, and can you use it?
- Designer
- Tiro Typeworks, John Hudson, Paul Hanslow, Kaja Słojewska
- Kind
- Serif
- Styles
- 1 weight (400), with italics
- On Google Fonts since
- 2020
- Character sets
- latin, latin-ext
- 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.
Castoro 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 Castoro, or upload it with Canva Pro. Canva’s help
- Cricut
- Once installed. Design Space lists Castoro under System. Fonts for Cricut →
From each app’s own font list or help pages, read on 28 September 2026.
05 / Measurements
Castoro, measured
Taken from the font file's own outlines, regular style
- x-height
- 47.7% of the emlowercase x
- Cap height
- 70.1% of the emcapitals
- x / cap
- 0.68lowercase against capitals
- Width
- 51.2% of the emaverage lowercase
- Ink
- 47%letter box filled
- Contrast
- 3.01 : 1high stroke contrast
Where it stands among serifs
Ranked against all 354 serifs on FontKind
x-heightNear the middle of serifs
WidthNear the middle of serifs
InkDarker than 81% of serifs
ContrastMore contrast than 81% of serifs
06 / Similar fonts
Fonts similar to Castoro
Matched letter by letter · its own family apart
Castoro's own familyCastoro Titling
- Jacques Francois85x-height 9% shorter · 9% lighter
- Lusitana82x-height 9% shorter · less stroke contrast · 6% narrower
- Baskervville8023% lighter · x-height 9% shorter
- Average78less stroke contrast · 7% narrower · 10% lighter
- Literata78less stroke contrast · 9% wider · x-height 6% taller
- Esteban77less stroke contrast · 11% lighter
All 100 fonts similar to Castoro →Compare side by side →Get Castoro on Google Fonts
07 / Swap
Swap Castoro without a jump
Running text within 3% of the width, x-height within 5%
- Esteban77text 0.8% narrower · x-height 0.6% taller
- Vollkorn76text 2.1% narrower · x-height 3.6% shorter
- Gelasio75text 1.2% narrower · x-height 1.8% taller
- Poly73same text width · x-height 0.8% shorter
- Nanum Myeongjo73text 2.9% narrower · x-height 1.5% shorter
- Epistle72text 1.0% narrower · x-height 0.6% taller
Fallback while it loads
Until Castoro loads, this sets Times New Roman in its place at 111.4% of its size, so running text keeps Castoro’s width and lines keep their height: nothing moves when it arrives.
@font-face {
font-family: 'Castoro Fallback';
src: local('Times New Roman');
size-adjust: 111.41%;
ascent-override: 67.77%;
descent-override: 21.99%;
line-gap-override: 29.62%;
}
font-family: 'Castoro', 'Castoro Fallback', serif;08 / Pairs
Used together with Castoro
Of the 1,219 home pages that load Castoro, 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
- Open Sans23%275 sites · 1.2× chance
- Work Sans12%146 sites · 9.7× chance
- Roboto10%127 sites · 0.5× chance
- Montserrat9.4%115 sites · 0.7× chance
- Inter9.4%114 sites · 0.9× chance
- Poppins9%110 sites · 0.8× chance
More than chanceSong Myung 1,014×Urbanist 18×Public Sans 17×
Fonts that go with Castoro: pairs and trios →The pairs sites choose most →
Pair checkerCastoro + 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 Castoro
Answered from its licence, Google Fonts and each app’s own font list
Is Castoro free for commercial use?
Yes. Castoro 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 Castoro?
FontKind doesn’t host Castoro’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 font files, one per style. On Windows or a Mac, double-click each font file and choose Install, then restart any app that was open, Word included.
Is Castoro in Microsoft Word?
Not until you install it: Castoro 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 Castoro in Google Docs?
Most likely. Search for Castoro under More fonts in the font menu of Docs; added there, it is in Sheets and Slides too.
Is Castoro in Figma?
Yes: Castoro is in Figma’s font menu, in the browser and the desktop app, with nothing to install.
How many weights does Castoro have?
Castoro comes in one weight, Regular (400), with an italic. Ask for bold and most apps thicken the letters themselves: a faux bold, not a drawn one.
Who designed Castoro?
Castoro was designed by Tiro Typeworks, John Hudson, Paul Hanslow and Kaja Słojewska. It has been on Google Fonts since November 2020. Tiro Typeworks also made STIX Two Text.
What fonts are similar to Castoro?
The closest in our letter-by-letter match are Jacques Francois (85), Lusitana (82) and Baskervville (80), out of 100. Next to Castoro, Jacques Francois is 9% lighter, with an x-height 9% shorter. Its own family, listed apart, adds Castoro Titling. See all 100 fonts like Castoro.