Comandante C40 to AeroPress Manual Grinder grind size converter

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📱 Get access to our mobile app

After sign up you can download our mobile app from App Store or Google Play, log-in with your account and unlock all pro features with no extra cost.

🔬 Get access to all conversion modes

With Pro, you can set a target grind size in microns and get the recommended settings for your grinder or get recommended settings for different ranges (medium, medium-coarse, etc.).

📨 Request new grinders

Got a grinder we don’t support yet? Pro users can easily submit new grinder requests. We aim to add your requested grinder within 3 days.

🔓 Unlock access to all Pro grinders

As a Pro user you get access to 100+ grinders including the all Pro grinders. See if your grinder is available by searching for it above on the converter.

🎨 Set custom app icon (iOS-only)

Customize your home screen by setting your own grinder as the app icon.

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What our users say

I find it’s especially good for giving me a starting point when roasters give their recommended grind size for machines like the EK43. Appreciate the work you’ve done 

It’s a lot more helpful than some people in the forums who would rather lecture about how even the same branded grinders and beans vary, instead of simply saying what setting they’re using so new users have a reference point to start from.

I converted the grind size from my Varia EVO Hybrid to my new Timemore Sculptor 078S this morning for my V60 recipe, and it was delicious.

I lost count of how many times I’ve looked for grinder conversions, even if approximate and geometry is different, having a ballpark within a few clicks when testing a recipe someone loves is amazing.

I love that I can convert microns into clicks for each grinder! Thank you for what you do.

This is great. Just getting into this coffee grinding thing, and most of the recipes declare the grind size by the hallowed Comandante C40. And you’ve got my 1Zpresso Q there. Sorted.

Seems quite good between my j ultra and df54. I think it will help lots of people with general ballpark calculations.

I find it’s especially good for giving me a starting point when roasters give their recommended grind size for machines like the EK43. Appreciate the work you’ve done 

It’s a lot more helpful than some people in the forums who would rather lecture about how even the same branded grinders and beans vary, instead of simply saying what setting they’re using so new users have a reference point to start from.

I converted the grind size from my Varia EVO Hybrid to my new Timemore Sculptor 078S this morning for my V60 recipe, and it was delicious.

I lost count of how many times I’ve looked for grinder conversions, even if approximate and geometry is different, having a ballpark within a few clicks when testing a recipe someone loves is amazing.

I love that I can convert microns into clicks for each grinder! Thank you for what you do.

This is great. Just getting into this coffee grinding thing, and most of the recipes declare the grind size by the hallowed Comandante C40. And you’ve got my 1Zpresso Q there. Sorted.

Seems quite good between my j ultra and df54. I think it will help lots of people with general ballpark calculations.

I find it’s especially good for giving me a starting point when roasters give their recommended grind size for machines like the EK43. Appreciate the work you’ve done 

It’s a lot more helpful than some people in the forums who would rather lecture about how even the same branded grinders and beans vary, instead of simply saying what setting they’re using so new users have a reference point to start from.

I converted the grind size from my Varia EVO Hybrid to my new Timemore Sculptor 078S this morning for my V60 recipe, and it was delicious.

I lost count of how many times I’ve looked for grinder conversions, even if approximate and geometry is different, having a ballpark within a few clicks when testing a recipe someone loves is amazing.

I love that I can convert microns into clicks for each grinder! Thank you for what you do.

This is great. Just getting into this coffee grinding thing, and most of the recipes declare the grind size by the hallowed Comandante C40. And you’ve got my 1Zpresso Q there. Sorted.

Seems quite good between my j ultra and df54. I think it will help lots of people with general ballpark calculations.

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