The Hario Prism is a manual, conical ceramic burr coffee grinder with an 800 mL capacity, built around a compact metal body designed for home use and travel. The grinder is available in Black and Silver; both share the same dimensions and capacity.
The Prism uses conical ceramic burrs, which shave coffee beans rather than cracking them the way blade grinders do. Ceramic burrs transfer less heat than metal during grinding, producing a more uniform particle distribution that is easier to dial in and repeat across brews.
The Prism's grind adjustment knob and nut are designed to be set and held, so once you find the right setting for your brew method you can return to it without re-calibrating each time. That repeatability matters whether you are dialing in a pour-over at home or packing the grinder for a trip and wanting consistent results on arrival.
The outer body is aluminum alloy, keeping the grinder light while giving it the rigidity of a metal tool rather than a plastic one. A silicone rubber non-slip base holds the mill steady on a countertop while you crank, reducing the effort needed to keep it in place. At 280 mm wide by 136 mm deep by 170 mm tall, the Prism fits in a bag without taking up significant space.
| Specification | Detail |
|---|---|
| Capacity | 800 mL |
| Dimensions | W 280 x D 136 x H 170 mm |
| Weight | 1.2 lb |
| Burr type | Conical ceramic |
| Handle material | Aluminium diecast, polypropylene |
| Outer hopper / bottle | Aluminum alloy |
| Inner hopper / bottle | ABS resin |
| Lid | Methacrylate resin |
| Shaft, spring, adjustment nut | Stainless steel |
| Washer, shaft cover, burr holder, adjustment knob | Nylon |
| Non-slip base | Silicone rubber |
| Available colors | Black, Silver |
| Country of manufacture | China |
The Hario Prism suits home brewers and travelers who want a manual grinder with repeatable grind settings and a durable metal body. Its 800 mL capacity and compact dimensions make it practical for single-origin pour-overs at home or coffee on the road.
The Prism is a hand-crank grinder and requires manual effort for every grind session; it is not suited to anyone who needs the speed or automation of an electric grinder. It does not connect to power and has no motor.
The Hario Prism uses conical ceramic burrs. Ceramic burrs transfer less heat than metal burrs during grinding and shave coffee beans rather than cracking them, which produces a more consistent grind particle size compared to blade-style grinders.
Yes. The Hario Prism has a grind adjustment knob and nut that hold their position once set, so the same grind size can be reproduced across multiple sessions without re-calibrating from scratch each time.
The Hario Prism is designed with travel in mind. Its compact dimensions (280 x 136 x 170 mm) and metal body keep it sturdy without adding significant bulk, and because it is a manual hand-crank grinder it requires no power source.
The Hario Prism has an 800 mL capacity. This applies to both the Black and Silver color variants, which share identical dimensions and specifications.
The Hario Prism has a silicone rubber non-slip base that holds the mill in place on a countertop during grinding, reducing the need to brace it with a second hand.
At CoffeeRoast Co., we are passionate about coffee. Every piece from our catalog is designed and rigorously tested to make sure you get perfect and consistent roasts every time.
We’ve partnered with various manufacturers that operate around the globe under a strict set of guidelines both on a local and corporate level so that when you shop with us, you will be able to select from the highest quality coffee roasters and coffee equipment available on the market.
Whether you are a coffee enthusiast or a small business owner, you're sure to find whatever so you have the perfect roast you've been looking for.
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In most cases, once the order is processed, it is final and not cancellable due to the larger nature of these products. Requests for returns/exchanges after the item has been delivered will be evaluated on a case by case basis. Any return request is subject to an administrative and cancellation fee equal to 10% of your order with a minimum of $35.
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Should an item be returned because it was defective, misrepresented, not as described, etc., CoffeeRoast Co. will issue a full refund and will reimburse the customer for all shipping expenses associated with the return.
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