Question 1

Is 1.06 on a Kingrinder K4 the same as 1.06 on a Wilfa Svart?

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 6 on the Wilfa Svart.

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	Wilfa Svart
Espresso~250 µm	0.30	Too fine
Moka pot~350 µm	0.41	2
AeroPress~450 µm	0.53	4
V60~560 µm	1.06	6
Chemex~700 µm	1.23	9
French press~900 µm	1.47	14
Kalita Wave~600 µm	1.11	7
Cold brew~1100 µm	2.10	18
Siphon~650 µm	1.17	8

Kingrinder K4 to Wilfa Svart

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