Hakaru - Coffee Calculator

Hakaru is a simple coffee calculator for home baristas and specialty coffee lovers. Calculate the perfect coffee-to-water ratio in seconds. Enter beans or water, choose 1:X or g/L, and get precise results for pour-over, espresso, and everyday brewing. Use the built-in brew timer to track your extraction, then save recipes with grind, equipment, brew time, and taste notes so you can repeat your best cups. Features: • Coffee ratio calculator (1:X and g/L) • Quick conversion between beans (g) and water (ml) • Brew timer with recent history • Save and organize recipes • Taste profile notes for each brew • Clean, focused design for fast use at the counter Brew smarter with Hakaru — your coffee companion.