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Grinder conversion

Wilfa Svart to 1Zpresso X-Ultra

A V60 grind of about 6 on a Wilfa Svart is roughly 1.5.1 on a 1Zpresso X-Ultra. Both land near 560 µm, a medium-fine grind.

Wilfa Svart6V60 setting
1Zpresso X-Ultra1.5.1V60 setting
Particle size ~560 µmGrind Medium-fine

Settings by brew method

Brew methodWilfa Svart1Zpresso X-Ultra
Espresso~250 µmToo fine0.5.0
Moka pot~350 µm21.0.9
AeroPress~450 µm41.2.9
V60~560 µm61.5.1
Chemex~700 µm92.1.9
French press~900 µm142.5.9
Kalita Wave~600 µm71.5.9
Cold brew~1100 µm183.3.8
Siphon~650 µm82.0.9

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

More about these grinders

Questions

Is 6 on a Wilfa Svart the same as 6 on a 1Zpresso X-Ultra?

No. The two grinders count in different steps, so the same number gives a different grind. 6 on the Wilfa Svart matches about 1.5.1 on the 1Zpresso X-Ultra.

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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