Mahlkönig E64 WS – Grind-by-Weight

Mahlkönig E64 WS – Grind-by-Weight: Your personal barista assistant

Imagine this: You get up in the morning. You're still tired. You want espresso. You don't want to weigh beans, fumble with precision scales, or make adjustments. You want to press a button and have exactly 18.0 grams of ground coffee in the portafilter.

Every single time. Down to the tenth of a gram.

The Mahlkönig E64 WS makes this dream a reality. It brings the legendary "Grind-by-Weight" (GbW) technology, previously reserved for large professional grinders, into your home. This is ultimate convenience combined with German engineering.

Forget timers. Forget estimating. Here, only the weight matters. This is café-quality food for your kitchen.

Why Grind-by-Weight (GBW) is changing everything

Conventional grinders grind by time (e.g., 5 seconds). But beans are natural products. Sometimes they are harder, sometimes softer; sometimes the hopper is full, sometimes empty. The result: In 5 seconds, you sometimes get 17g, sometimes 19g.

The problem? Your espresso tastes different every day.

The E64 WS has a high-precision scale directly beneath the portafilter fork. It weighs the coffee grounds as they fall. It stops the motor precisely when your target weight is reached. This guarantees absolute consistency – the key to perfect taste.

You set it once: 18.0g. From then on, you get 18.0g every day – regardless of whether the beans are fresh or a week old, regardless of whether the hopper is full or empty. That's the difference between "good enough" and "professional".

Technology in detail – German quality

• 64mm special steel burrs: The heart of the system. German quality. These flat burrs produce an extremely homogeneous grind for high extraction and a clear, balanced flavor.
• Grind-by-Weight technology: Real-time weighing during grinding. Precision down to 0.1 grams. Reproducible results, every day, every cup.
• Grind-by-Sync capability: Seamless connection to smart coffee machines. The grinder automatically synchronizes with the machine and adjusts the grind size based on the measured extraction time. That's automated perfection.
• Electronic grind setting (DDD): Patented Disc Distance Detection from Mahlkönig's professional grinders. You adjust the grind setting electronically – measured in micrometers. Tool-free zero-point calibration; simply follow the instructions on the display.
• Mahlkönig Sync App: Connect your grinder to the cloud. Automatic software updates, usage statistics, predictive maintenance alerts. You have everything at a glance – conveniently via smartphone (iOS/Android).
• Fastest grinding speed: At least 3 g/s for espresso (up to 3.5 g/s). That means: 18 g in 6 seconds. Fast, precise, quiet.
• Whisper-quiet grinding: Optimized for home use. You can grind at 6 a.m. without waking anyone. Perfect for early mornings.
• Compact design: 15.4cm wide × 39cm high × 21.8cm deep. Fits on any worktop without being obtrusive. That's space-saving precision.
• 250g Hopper: Perfectly sized for home use – enough for a week, but not so huge that the beans go stale.

Grind-by-Sync: Automatic precision (for time-based extraction)

The E64 WS can synchronize with smart coffee machines. But when does that make sense?

If you're using timed extraction: Most espresso machines extract by time (e.g., 25 seconds). The machine measures: "Was the shot too fast or too slow?" If too fast, it signals the grinder: "Grind finer." If too slow: "Grind coarser." The E64 WS automatically adjusts the grind setting until your shot is perfect. That's grind-by-sync. That's intelligent control.

If you're extracting by weight (e.g., with an Acaia Lunar on the drip tray): then grind-by-weight is even more important. Why? Because even a 0.5g difference in the portafilter changes the entire extraction chemistry.

Technical details – German engineering

Your ritual with the E64 WS – 7:00 to 7:02 AM

The operation is a dream. No weighing, no calculating, no precision scales. Imagine:

1. 7:00 AM – Setting (one-time only):
   You set your recipe once (e.g., 18.0g). You only do this once – from then on, the grinder remembers it. LED display, intuitive and clear. You select your grind setting (electronic, stepless). The E64 WS saves everything.
2. 7:01 AM – Insert portafilter:
   You place the portafilter in the fork. The grinder recognizes it (grind-by-weight scale activated). You press the button. That's it.
3. 7:01:15 AM – The mill is working:
   The motor hums quietly (very quietly – optimized for mornings). The 64mm burrs grind (3g per second). The coffee grounds fall into the portafilter. The scale weighs in real time. At 17.8g... 17.9g... 18.0g – STOP. The motor stops precisely. Accuracy down to 0.1g.
4. 7:02 AM – Finished:
   You take out the portafilter. 18.0g of coffee grounds – fluffy, homogeneous, perfect. You tamp. You pull the shot. You drink. And you realize: It tastes the same every day. That's consistency. That's perfection.
   Perfect for the hopper

   Since you're working with a bean hopper here, we recommend stable, classic blends that taste consistent for weeks:

   • Nutty Delight : Remains consistent in flavor for weeks. The E64 WS perfectly brings out the nutty creaminess. Hazelnut, caramel, chocolate – velvety, full, balanced. Brewing temperature 93°C, 1:2 ratio (18g in, 36g out), 25-28 seconds.
   • Cozy Chocolate : This Brazilian natural coffee benefits greatly from consistent dosing. The E64 WS delivers the same creamy, chocolatey shot every day. Like liquid milk chocolate – rich, sweet, and well-rounded.

Who is the Mahlkönig E64 WS right for?

You don't need the E64 WS if you like to experiment, love single dosing, or try different beans daily. In that case, a Varia VS4 or Weber EG-1 would be better for you.

But treat yourself to the E64 WS if:

• You love convenience . If you don't want to weigh, calculate, or adjust anything in the morning. If you want to press a button and get the perfect espresso. The E64 WS is your personal barista assistant.
• You're looking for consistency . If you want the same brilliant espresso every day – no surprises, no variations, just perfection. The E64 WS delivers reproducible results.
• You love a classic roast . If you have a favorite roast (e.g., Nutty Delight or Cozy Chocolate) and want to perfect it, the E64 WS extracts maximum flavor from stable blends.
• You extract by weight . If you're working with an Acaia scale and need precise ratios (1:2, 1:2.5, etc.), the E64 WS guarantees that your input quantity is always correct – and therefore so is your extraction chemistry.
• You value technology . If you want to use Grind-by-Sync (automatic grind size adjustment with smart machines), view statistics (Sync app), and receive automatic updates, the E64 WS is future-proof.
• If you want peace and quiet , the E64 WS is extremely quiet. You can grind at 6 a.m. without waking anyone. Perfect for early mornings.
• You appreciate German quality . Mahlkönig has been building grinders for over 100 years. That's engineering that lasts forever. The E64 WS isn't a throwaway product – it's an investment.

The truth is: The E64 WS isn't the most versatile grinder (that's what single-dosing grinders are for). But it is the most convenient . It is the most consistent . It is the smartest . If you're ready to invest in maximum convenience—if you want a grinder that thinks for you—then the E64 WS is the right choice.

What you get – Made in Germany

• Mahlkönig E64 WS grinder (color selectable: matte black, matte white)
• 250g bean container (hopper)
• Ball joint outlet (adjustable)
• Grind-by-Weight scale (integrated)
• LED display with ambient lighting (customizable)
• Mahlkönig Sync App (iOS/Android) – Cloud connectivity, statistics, updates
  
• User manual & quick-start guide
• 2-year warranty & support from the official Mahlkönig partner

Frequently asked questions about the Mahlkönig E64 WS

How accurate is grind-by-weight?

Extremely precise. The E64 WS weighs to the nearest 0.1 gram. If you set it to 18.0g, you get 18.0g (±0.1g). That's the same precision as in professional cafés. This consistency is key to reproducible flavor.

What is grind-by-sync?

The E64 WS can synchronize with smart coffee machines (e.g., those with Wi-Fi capability). This is especially useful if you're using timed extraction: The machine measures the extraction time. If the espresso is running too fast, it signals the grinder: "Grind finer." If it's running too slowly: "Grind coarser." The grinder automatically adjusts the grind size – intelligent control.

However, if you're extracting by weight (e.g., with an Acaia scale), grind-by-weight is even more crucial than grind-by-sync. Why? Because even a 0.5g difference in the portafilter fundamentally alters the extraction chemistry and ratio. Using 19g instead of 18g results in a completely different extraction dynamic – even if you achieve the same output (36g). The E64 WS guarantees precise weight and therefore reproducible chemistry.

Do I need the Sync app?

No. The E64 WS works perfectly fine without the app. But the app is extremely useful: you can see usage statistics (how many shots, how many grams ground), receive automatic software updates, and connect the grinder to smart machines. If you love technology, the app is a bonus. If not, just ignore it.

How loud is the E64 WS?

Very quiet. Optimized for home use, especially for early mornings. Compared to other grinders (e.g., Niche Zero, Eureka Mignon): noticeably quieter. You can grind at 6 a.m. without waking anyone. That's a huge advantage.

Will the E64 WS fit my machine?

Yes. The E64 WS grinds directly into your portafilter (the ball-joint spout adapts to different portafilters). It works with any espresso machine – La Marzocco Micra , Arkel Coast , Rocket, Flair, ECM, or any other. The adjustable spout adapts to your machine.

Can I use perfect water?

Absolutely. Combine the E64 WS with our Apax Lab Box Set (water mineralization for maximum flavor). The E64 WS delivers precise grind quality – the Apax Lab Set delivers perfect water. Together: Unbeatable.

Is the E64 WS suitable for single dosing?

No. The E64 WS is designed for hopper use (you fill the bean hopper with 250g). If you love single dosing (different beans daily), we recommend the Varia VS4 , VS6 , Lagom P80 , or Weber EG-1 . But if you have a favorite roast and want to perfect it – then the E64 WS is perfect.

Conclusion – luxury is not having to worry.

The Mahlkönig E64 WS is the grinder for everyone who loves the result but wants to simplify the process. No weighing, no single dosing tubes, no stress. Simply the best espresso, every day. That's professional standard for your kitchen.

Consistency and German engineering. This isn't just a mill – it's an investment in daily perfection.