How To Choose a Coffee Grinder for Beginners Whole Latte ...
Burr size is measured in millimeters and range from around 40 millimeters for lower cost but capable home use grinders, up into the 60 millimeter range for prosumer level espresso focused grinders and into 80+ millimeters for high volume commercial rated grinders. In general larger burrs tend to produce a higher quality grind and do it faster.