If you're into coffee brewing you must have seen some version of:
“What’s Comandante 26 clicks like on 1Zpresso J-Max?”
I remember having the same problem when I got into home coffee brewing. When I first got a cheap Hario Mini Slim, I struggled because most recipes online referenced Comandante C40 clicks.
So many years later (and now owning a Comandante) So, I built a simple crowdsourced grinder conversion tool. It gives a rough estimate of how different grinders compare at various settings.
Here's how it works - I've mapped out recommended grind ranges from manufacturers and gathered some data shared across various coffee forums and wrote a simple algorithm that converts between different settings. The cool part is that anyone can submit feedback on whether a conversion worked for them, making future results (hopefully) more accurate.
A quick disclaimer: This isn’t an exact science, grinders have different burr geometry, steps, and quirks. But I wanted to create a starting point that improves over time.
If you’re curious about the process, it took me about three weeks of evenings to build. The app runs on Next.js with an SQL database that stores conversions and displays the three most popular ones.
