1Zpresso J-Ultra to Comandante C40 MK4

A V60 grind of about 2.2.8 on a 1Zpresso J-Ultra is roughly 21 clicks on a Comandante C40 MK4. Both land near 560 µm, a medium-fine grind.

1Zpresso J-Ultra2.2.8V60 setting

Comandante C40 MK421 clicksV60 setting

Particle size ~560 µmGrind Medium-fine

Settings by brew method

Brew method	1Zpresso J-Ultra	Comandante C40 MK4
Espresso~250 µm	1.0.2	9 clicks
Moka pot~350 µm	1.4.2	13 clicks
AeroPress~450 µm	1.8.3	17 clicks
V60~560 µm	2.2.8	21 clicks
Chemex~700 µm	2.8.5	26 clicks
French press~900 µm	3.6.6	33 clicks
Kalita Wave~600 µm	2.4.4	22 clicks
Cold brew~1100 µm	4.4.7	40 clicks
Siphon~650 µm	2.6.4	24 clicks

Both grinders are mapped to one particle-size scale, fitted from the Honest Coffee Guide's per-method charts. It is not manufacturer burr-gap data, so treat this as a starting point and adjust by taste.

Go the other way

Comandante C40 MK4 to 1Zpresso J-Ultra

More about these grinders

Questions

Is 2.2.8 on a 1Zpresso J-Ultra the same as 2.2.8 on a Comandante C40 MK4?

No. The two grinders count in different steps, so the same number gives a different grind. 2.2.8 on the 1Zpresso J-Ultra matches about 21 clicks on the Comandante C40 MK4.

How accurate is this conversion?

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.

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

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

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