Question 1

Is 1.06 on a Kingrinder K4 the same as 1.06 on a Baratza Virtuoso+?

Accepted Answer

No. The two grinders count in different steps, so the same number gives a different grind. 1.06 on the Kingrinder K4 matches about 14 on the Baratza Virtuoso+.

Question 2

How accurate is this conversion?

Accepted Answer

It is a starting point. Both grinders are mapped to particle size in microns, fitted from the Honest Coffee Guide charts for each brew method, not from manufacturer burr-gap specs. Beans, roast and burr wear change the result, so adjust by taste.

Question 3

The coffee tastes sour or bitter after converting. What should I change?

Accepted Answer

Sour and thin: grind finer by a step or two. Bitter and harsh: grind coarser. Change one thing at a time.

Brew method	Kingrinder K4	Baratza Virtuoso+
Espresso~250 µm	0.30	2
Moka pot~350 µm	0.41	6
AeroPress~450 µm	0.53	10
V60~560 µm	1.06	14
Chemex~700 µm	1.23	20
French press~900 µm	1.47	28
Kalita Wave~600 µm	1.11	16
Cold brew~1100 µm	2.10	36
Siphon~650 µm	1.17	18

Kingrinder K4 to Baratza Virtuoso+

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