Thai font \u00b7 OFL

Chakra Petch

จักรเพชร

By Narongsak Chaiwong

Typography & Licensing Specialist, ThaiGraph · April 16, 2026

Information verified as of April 2026

What Chakra Petch is

Chakra Petch is a display geometric Thai sans-serif from Cadson Demak, distinguished by its chamfered (cut) corners on stem terminals that give the font a machined, technical feel. The name translates roughly to “diamond wheel” (จักรเพชร), and the design leans into that industrial-precision metaphor. It ships five weights with matching italics under the SIL Open Font License.

The cut-corner treatment is unusual in Thai type. Most display Thai fonts either keep clean geometric terminals (Kanit) or add organic flares (Bai Jamjuree). Chakra Petch sits between those — clearly geometric, but with a specific visual quirk that reads as “engineered” at display sizes.

In commercial use, Chakra Petch is a favourite for tech-adjacent, automotive, and sports branding. The cut corners photograph well on large signage and carry a premium-technical tone on packaging.

Character design and tone

Chakra Petch uses geometric skeletons with chamfered terminals, high x-height, and wider proportions than Athiti, giving it a confident, grounded display silhouette. The head of ก is an angular open hook; where most fonts would round a corner, Chakra Petch cuts it at 45°.

The corner cuts are most visible at Bold and SemiBold weights. At Light, the chamfer reads as a subtle bevel rather than a dominant feature. Tone marks and vowel signs follow the same geometry — angular openings rather than soft curves. Thai numerals share the chamfered terminals, which keeps the typographic texture cohesive at display sizes.

Italic cuts tilt roughly 8°, and the Latin companion is a geometric sans that shares the cut-corner detail. Uppercase letters like N, M, W pick up the chamfer on their apex points, which matches the Thai treatment closely.

Weights and availability

Chakra Petch ships five weights from Light to Bold with matching italics across the full range. Download from Google Fonts or the Cadson Demak catalogue.

File sizes are around 45-60KB per weight in WOFF2 with Thai + Latin subset. For display deployment, SemiBold and Bold carry most of the load; Light and Regular are useful for subheads that want to retain the technical feel without the heavy chamfer.

Best use cases

Chakra Petch is purpose-built for brands where “technical”, “precise”, or “performance” is the core message. Strong briefs:

• Automotive marketing and dealer branding, particularly EV and performance segments
• Tech hardware packaging — audio, gaming, cameras, accessories
• Sports and esports branding, tournament graphics, athletic apparel
• Industrial design companies, engineering consultancies, architecture firms
• Fitness, supplements, and performance nutrition where the tone is masculine-adjacent

Where it doesn’t fit: editorial long-form (the chamfers fatigue at small sizes), hospitality and wellness (too technical), and traditional or cultural brands where Thai looped serifs carry more weight.

Pairings

Chakra Petch pairs best with strong geometric Latin sans or mono typefaces that share its technical register. Three pairings:

• Rajdhani — Indian Type Foundry Latin with very similar chamfered geometry, close visual sibling
• IBM Plex Mono — monospace companion for spec sheets and data displays
• Barlow — wider geometric Latin for body text under Chakra Petch display

Licensing

Chakra Petch is released under the SIL Open Font License, free for commercial use, modification, and bundling provided the OFL notice remains. Verify at the Google Fonts specimen or the Cadson Demak page. See the fonts directory and the typography hub for more display Thai options and pairing guidance.

Information verified as of April 2026