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Ratio Eight Cobalt Glass Coffee Maker

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Ratio believes you shouldn't need to be a professional barista to make great-tasting coffee. The company's smart coffee maker uses precise brewing science and a powerful heating element to create reliably smooth batches of freshly brewed coffee. The best part: the entire process is automated so you can do more drinking and less thinking.

  • Developed with champion baristas, the machine emulates a manual pour-over coffee, fine-tuned to provide a sweet cup that lacks bitterness.
  • Powerful heating element delivers water at the optimum temperature of 200°F.
  • Features a bloom cycle that allows the grinds to settle down before delivering the rest of the hot water, resulting in more evenly extracted grounds.
  • Sensors determine the amount of water added to the tank and adjust the brewing time accordingly.
  • One-button operation and subtle light display for simple use and clean-lined aesthetic.
  • Handblown borosilicate glass carafe.
  • Handblown borosilicate glass water tank.
  • Brews up to 40-fl.-oz.
  • Hand assembled in Portland, Oregon.
Dimensions & More Info
  • Overall: 13 1/2" x 9" x 14" high.
  • Glass Carafe: 7" x 9 3/4" high (including handle).
  • 40-fl.-oz cap. 
  • 1400W.

Additional Information

  • Includes glass carafe, silicone lid, one bottle of Ratio wash, Ratio microfiber towel, four Chemex paper filters, operation guide and power cord.
  • All metal and wood parts are sanded and polished by hand. All glass parts are produced by glass artisans in a hand-blown process.
  • 5-year warranty.
  • This product is intended for use in the United States and Canada, and is built to U.S. electrical standards.
Use & Care


  • Hand-wash.
  • After brewing, simply rinse out the sturdy glass carafe with hot water and discard or compost the used paper filter. 
  • For deeper cleaning, clean water tank and carafe with detergent.

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