Hario Polaris Coffee Scale

Brew with confidence and precision using the Hario Polaris Coffee Scale, designed to remove guesswork from your daily coffee ritual. Unlike traditional scales, Polaris automatically calculates the exact amount of water needed based on your chosen extraction ratio — no math, no distractions.

The clear percentage-based display shows how much water you’ve poured relative to your target, helping you achieve consistent, repeatable results every time. Whether you’re perfecting your pour-over at home or brewing on the go, Polaris guides you smoothly toward a balanced, delicious cup.

Inspired by the Southern Star, Polaris becomes your reliable reference point for precision brewing.