HARIO Polaris Coffee Scale

Take control of your coffee brewing with the HARIO Polaris Coffee Scale—a smart, feature-rich scale engineered for both the home enthusiast and café operator aiming for consistency and precision. Developed by Japanese specialist HARIO, this scale is built specifically for coffee, combining accurate weighing (to 0.1 g) with a unique ratio calculation function that eliminates guess-work and empowers you to hit your target brew strength every time.

With the Polaris scale, you simply input your desired brew ratio (for example, 1:15 coffee to water), weigh your grounds, and the scale automatically calculates the total water required. A live percentage display tracks your pour progress—so you can see exactly how much water you’ve added relative to your target. This built-in ratio mode ensures you recreate favourite recipes or refine new ones with confidence.

For café professionals, this means less time doing mental calculations and more time focusing on extraction, flavour clarity and service speed. The large platform (W 127 × D 165 mm) and capacity up to ~2 000 g make it capable of handling both pour-over sets and baby-espresso machines, enabling a dual role for back-bar and home bar setups.

At home, the Polaris is equally compelling. Its sleek profile, intuitive interface and responsive buttons deliver an effortless experience whether you’re brewing a 20 g pour-over or a single shot espresso. The timer function integrates seamlessly into the professional workflow, while the non-slip base ensures stability and reliability across surfaces.

Aside from its smart features, the Polaris offers superb build quality. Despite its advanced functionality, it is compact enough to fit underneath many espresso group heads without compromising workspace. The minimal design suits modern kitchens and barista stations alike. According to independent testing, its accuracy, display clarity and smart features place it among the top scales for both espresso and brew-method versatility.

If your brewing practice demands repeatable results, the ability to track extraction with precision, and a tool that spans from café throughput to quiet Sunday morning brews, the HARIO Polaris Coffee Scale delivers in form, function and durability.