Fit and setup
Check this before you buy
Check the stored size, power needs, space to use it, and daily routine.
U.S. product
- weigh servings in the grinder
- grind into the portafilter
- small changes with a smooth dial
Stored size
4.88 W × 7.56 D × 15.35 H in
Published body size. Leave extra room to use, refill, connect, and clean it.
Power and circuit
110V U.S. listing, 310W manufacturer specification
Regional electrical wording comes from published details; confirm the outlet and branch circuit before purchase.
Daily routine
Keep the beans in the hopper. Turn the grind control smoothly to change the grind size.
Published details suggest this daily-use routine. The exact handle shape can affect how grounds transfer.
Portafilter fit
51mm and 53mm and 54mm and 58mm
A portafilter is the handled tool that holds the filter basket. Supported sizes do not guarantee fit for every handle shape.
We could not confirm thisSpace needed to use it
We could not confirm this
Leave room for the working parts until we confirm a measurement with the portafilter in place.
We could not confirm thisRoom to refill and clean
We could not confirm this
We could not confirm the room needed to fill the hopper, use the dosing cup, or change the grind setting.
How we checked this
What the evidence labels mean
- Source checked
- A cited source stated this fact when Espresso Receipt checked it. This is not a physical product test.
- Our summary
- This is our summary of published product details. It is not a hands-on result.
- We could not confirm this
- The available sources do not establish one reliable answer.
Main source: Eureka. Source checked 2026-08-29. This page lists published product details. It is not a physical fit test.
What we checked
Product details we checked
- Stored size
- 4.88 W × 7.56 D × 15.35 H in
- Voltage
- 110V U.S. listing, 310W manufacturer specification
- Warranty
- 1 year via authorized retailer
- Burrs
- 55mm flat hardened steel
- Adjustment
- Stepless micrometric
- Daily routine
- Keep beans in the hopper.
- Portafilters
- 51mm, 53mm, 54mm, 58mm
Plain definitions for product terms
- Portafilter
- The handled tool that holds the filter basket and locks into the machine.
- Filter basket
- The small filter cup inside the portafilter that holds ground coffee.
- Dose
- The dry coffee put into the filter basket.
- Burrs
- The grinder parts that cut or crush coffee beans.
- Stepless adjustment
- A grinder control that moves smoothly between positions.
- Hopper
- The container that stores beans on the grinder.
Facts and sources
Facts and sources
Maker's Instant Grind Weighing; maker states ±0.2 g consistency
See source: Eureka ↗(opens in a new tab)More things to check before you buy
- The maker or seller reports the ±0.2 g dose consistency and 64 dB noise claims. Espresso Receipt did not measure them.
Sources
Sources used
- Mignon Libra product pageEureka · Manufacturer · Source checked 2026-08-29(opens in a new tab)
- Mignon Libra U.S. listingWhole Latte Love · Authorized retailer · Source checked 2026-08-29(opens in a new tab)
See a problem with a product detail? Send a correction.
Product details checked through 2026-08-29. Product details and price checks can change.
Use and care resources
Guides and manuals
- Site guideEspresso Receipt · practical guideHow to dial in espressoCovers: Use dose, yield, time, taste, and flow without chasing a universal grinder number.
- Site guideEspresso Receipt · practical guideEspresso grind size chartCovers: Translate adjustment systems into a safe starting process for espresso.
- Site guideEspresso Receipt · practical guideCoffee grinders for espressoCovers: Compare grind adjustment, burrs, dosing, and coffee left inside after grinding before choosing a grinder.
Independent reviews · not our tests
Independent reviews
- VideoCoffee KevEureka Mignon Libra. Best Home Espresso Grind By Weight Grinder?Covers: Hands-on assessment of weight-based dosing consistency and whether the Libra is the best home grind-by-weight option.(opens in a new tab)
- VideoitsXrisEureka Mignon Libra Review - GRIND BY WEIGHT at Home!Covers: Hands-on review of the Libra's grind-by-weight accuracy, workflow, and daily espresso use.(opens in a new tab)
- VideoTom's Coffee CornerEureka Mignon Libra Deep Dive ReviewCovers: Deep-dive review covering the integrated scale, dose accuracy, grind quality, and comparison to timed Mignons.(opens in a new tab)
- WrittenKaffeemacherEureka Mignon Libra with integrated scale reviewedCovers: In-depth hands-on review from the Swiss coffee school: scale accuracy, grind quality, workflow with an espresso machine, strengths and weaknesses.(opens in a new tab)
These reviews come from other publishers. Espresso Receipt did not produce, commission, or endorse them. Their opinions belong to their creators. Links last checked 2026-07-31.