Last updated: October 20, 2026
The Subminimal SubScale is the best espresso scale pick for 58mm portafilters if you single-dose: it is a dosing cup with a built-in 0.1 gram scale, a Tritan body and USB-C charging, so you can weigh beans, catch grounds and transfer them to the basket in one cup. A 58mm scale in this sense means a dosing cup or platform sized to work with 58mm baskets and portafilters. If you mainly want a timer to track shot yield under the cup, the Maestri House S2 is the one to look at.
Quick List
- Bucanim Dosing Cup Scale – best for the finest readout in a steel dosing cup
- Subminimal SubScale – best for single dosing with documented specifications
- Magnetic Detachable 2-in-1 Scale – best for a cup that detaches from the scale base
- Maestri House S2 – best for timing shots on the drip tray
- modone 3-in-1 Espresso Scale – best for a metal dosing cup with an auto timer
- Jaan & Zen Dosing Cup Scale – best for weighing beans and catching grounds in a compact cup
Which One Is Right for You?
See also: 6 Best Pour Over Kettles (October 2026) Top Reviews • Washed vs Natural Coffee Process: Complete Guide (2026)
| If you… | Choose |
|---|---|
| single-dose and want a cup that weighs beans and catches grounds | Subminimal SubScale |
| want the finest readout and a waterproof steel cup | Bucanim dosing cup |
| want an all-metal cup with a built-in auto timer | modone 3-in-1 scale |
| need a platform scale with auto timer to track shot yield | Maestri House S2 |
| want a detachable cup you can separate from the scale | Magnetic 2-in-1 scale and cup |
| want a small cup for weighing beans and dosing into the basket | Jaan & Zen dosing cup |
Decide first whether you need a dosing cup or a shot scale. A dosing cup sits under the grinder and measures the dose, while a platform scale sits on the drip tray and measures the liquid coming out. Some products here try to combine the two.
Bucanim Espresso Dosing Cup with Scale, 58mm Coffee Dosing Cup and Digital Scale 0.01g Precision, USB-C Rechargeable Waterproof Stainless Steel, 500g x 0.01g for Barista, Silver
Included for '6 Best Espresso Scales for 58mm (October 2026) Expert Picks' because the listing specifies 58mm Coffee Dosing Cup and Digital Scale 0.01g Precision and USB-C Rechargeable Waterproof Stainless Steel, details this guide uses to compare options.
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Subminimal SubScale Digital Dosing Cup with LED Display - Black | Sleek & precise scale, dosing cup accessories, measures coffee grounds for espresso
Included for '6 Best Espresso Scales for 58mm (October 2026) Expert Picks' because the listing specifies Black and Sleek & precise scale, details this guide uses to compare options.
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Magnetic Detachable Espresso Coffee Scale & Dosing Cup 2-in-1 | Fits 58mm Portafilter | Precision 0.1g/500g | Minimalist Hidden LED Display | for Grinding & Brewing | Black
Included for '6 Best Espresso Scales for 58mm (October 2026) Expert Picks' because the listing specifies Fits 58mm Portafilter and Precision 0.1g/500g, details this guide uses to compare options.
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Maestri House S2 Espresso Coffee Scale with Timer 0.1g Precision Shot Scale | USB-C Rechargeable, Dual Timing Modes, 2kg/0.1g Digital Scale with Borosilicate Glass Top for Espresso and Pour-Over Brewing
Included for '6 Best Espresso Scales for 58mm (October 2026) Expert Picks' because the listing specifies USB-C Rechargeable and Dual Timing Modes, details this guide uses to compare options.
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modone Espresso Scale with Auto Timer, 3‑in‑1 SUS304 Coffee Dosing Cup, 0.1g Precision 300g, USB‑C Rechargeable OLED Display, Portable Shot Scale for Coffee Beans & Ground Powder, Black
Included for '6 Best Espresso Scales for 58mm (October 2026) Expert Picks' because the listing specifies 3‑in‑1 SUS304 Coffee Dosing Cup and 0.1g Precision 300g, details this guide uses to compare options.
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Jaan & Zen Espresso Dosing Cup with Built-In Scale — Weigh Beans, Catch Grounds & Dose with Precision | 58mm Portafilter, 35g, USB-C Rechargeable
Included for '6 Best Espresso Scales for 58mm (October 2026) Expert Picks' because the listing specifies Catch Grounds & Dose with Precision and 58mm Portafilter, details this guide uses to compare options.
View on AmazonAfter that, compare capacity and readout. A 0.1 gram step is enough for most home espresso, whereas a 0.01 gram readout only helps if the load cell and your routine can actually make use of it.
All 6 Picks in Detail
1. Bucanim Dosing Cup Scale – Best for the finest readout in a steel dosing cup
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Bucanim’s listing describes a 58mm espresso dosing cup with a digital scale, 0.01 gram precision, USB-C charging, a waterproof build and a stainless steel body. It suits single-dose enthusiasts who weigh beans, grind them into the cup and want to see a small loss of grounds as a lower number after transfer.
Be careful with the headline precision figure. A scale can display two decimal places without being repeatable to that level, especially in a small cup that is moved around and affected by static and air currents. Treat 0.01 grams as the display step and look for the listed maximum capacity and auto-off behavior on the product page, since the truncated listing title does not state them.
Stainless cups also conduct heat, so keep the cup away from steam and a hot drip tray. They are straightforward to wipe clean, which is useful because coffee oils cling to plastic over time.
- Dosing cup size: 58mm class, per the listing name
- Display precision: 0.01 g step stated; maximum capacity, confirm on listing
- Material: stainless steel cup, per the listing name
- Charging: USB-C rechargeable
- Water resistance: described as waterproof; rating, confirm on listing
Pros
- Very fine display step suits micro adjustments in dose
- Steel cup is easy to wipe clean and durable
Cons
- Capacity and timing features are not visible in the truncated title
- A display step finer than 0.1 g can flicker in drafty kitchens
Against the Subminimal SubScale, this offers a finer readout and a metal body, while the SubScale’s published specifications are more fully documented.
2. Subminimal SubScale – Best for single dosing with documented specifications
The SubScale is a purpose-made digital dosing cup with an LED display. Retail specification pages describe a Tritan body, an 80 mm diameter by about 105 mm height, a weight near 122 grams, bean capacity around 60 grams and a 120 ml cup volume. It suits people who grind straight from whole beans each morning and want to weigh the beans and the grounds without extra containers.
Published details include 0.1 gram accuracy, IPX4 water resistance, USB-C charging and a 400 mAh battery, with auto-off after about 30 seconds empty or 60 seconds when it holds beans. The display tops out at 99.9 grams, which is more than enough for single doses of 18 to 22 grams. Subminimal’s own information says it fits 58mm baskets as standard, and the 54mm size needs an adapter; confirm how the lip sits on your portafilter.
A heat-rated body lets you catch a shot in the cup for quick checks, though a platform scale is better for repeated yield measurements.
- Display precision: 0.1 g, with a 99.9 g display limit
- Cup size: about 120 ml, about 60 g bean capacity
- Dimensions: about 80 mm diameter by 105 mm tall
- Material: Tritan body; IPX4 water resistance
- Battery: about 400 mAh, USB-C charging; 30 to 60 second auto-off
Pros
- Clear published specifications and a purpose-built shape
- Display step of 0.1 g is plenty for single dosing
Cons
- The cup holds roughly 60 g of beans, so larger doses will not fit
- No built-in shot timer
It is simpler than the modone 3-in-1 model, which adds a timer, and better documented than the other dosing cups here.
3. Magnetic Detachable 2-in-1 Scale – Best for a cup that detaches from the scale base
This 2-in-1 model combines a scale and a dosing cup that detach magnetically, according to its listing. It also names a 0.1 gram step, a 500 gram capacity and a minimalist hidden LED display, with a 58mm portafilter fit. The pitch is flexibility: use the base alone as a small scale, then snap the cup on for dosing.
The 500 gram capacity is the most useful figure on the list because it is large enough for a shot glass and cup on top during yield weighing, which the smaller dosing cups cannot do. A hidden display only lights up when the unit is on, which keeps the front clean but can be harder to read in direct sun.
Magnet strength matters in practice. Check that the cup sits flat and does not shift when you tap the portafilter, because a loose seat can create a reading error. Find out whether the unit has an auto timer, since the listing title does not say.
- Fit: 58mm portafilter, per the listing name
- Precision and capacity: 0.1 g, 500 g maximum
- Design: detachable cup with magnetic attachment
- Display: hidden LED; brightness, confirm on listing
- Timer, battery and charging: confirm on listing
Pros
- Large capacity doubles as a general espresso scale
- Detachable cup gives two tools in one
Cons
- Timer and battery details are not stated in the title
- Magnetic seat quality is worth checking
It is more versatile than the Subminimal SubScale but less documented; the Maestri House S2 is the better choice if timing shots matters most.
4. Maestri House S2 – Best for timing shots on the drip tray
The S2 is a platform espresso scale rather than a dosing cup. Its maker lists a 0.1 gram step, a 2 kilogram maximum, automatic and manual timing modes, a borosilicate glass surface with hidden LED display and USB-C charging through a built-in battery of about 500 mAh. It suits anyone who wants to track brew ratio, such as 18 grams in and 36 grams out, without carrying another cup.
The footprint is about 4.1 inches square, so it fits on most drip trays, though tall machines may leave little clearance beneath the spout. A removable silicone pad provides grip and some heat insulation. Sleep time is listed as five or six minutes depending on the listing, so confirm it if you pull shots slowly.
Because it is not a 58mm-specific accessory, check whether the portafilter handle will overhang the platform when you weigh a basket directly on it.
- Type: platform scale with timer, not a dosing cup
- Precision and range: 0.1 g, up to about 2,000 g
- Timing: auto and manual modes
- Surface: borosilicate glass with silicone pad; about 4.1 inch square
- Battery: built-in lithium, USB-C charging
Pros
- Dual timing modes and a large range suit shot tracking
- Compact footprint and a glass surface that wipes clean
Cons
- Not a dosing cup, so it does not help with single-dose workflows
- Hidden display can be hard to read in bright light
Pair it with a dosing cup such as the SubScale and you cover both ends of the workflow.
5. modone 3-in-1 Espresso Scale – Best for a metal dosing cup with an auto timer
The modone combines an espresso scale, an automatic timer and a SUS304 stainless steel dosing cup, according to its listing. It also names 0.1 gram precision, a 300 gram maximum, an OLED display and USB-C charging. That mix suits a barista who wants one device to weigh beans, track the shot and measure yield.
A 300 gram range is more than a dosing cup alone needs but enough for a small cup of espresso. OLED displays are crisp and legible from an angle, though they use more power than basic LED screens, so check the battery life listed for the specific model. SUS304 is a common food-grade stainless alloy that resists corrosion and does not retain odors.
The truncated listing title suggests a portable shot-tracking design, so confirm the exact cup diameter against your portafilter before relying on it as a 58mm accessory.
Auto timers differ in how they trigger: some start when weight appears, others when the first drop lands. Confirm the behavior on the product page.
- Type: 3-in-1 scale, timer and stainless dosing cup
- Precision and range: 0.1 g, 300 g
- Cup material: SUS304 stainless steel
- Display: OLED; auto timer
- Charging: USB-C; 58mm fit, confirm on listing
Pros
- Combines dosing and timing in one device
- Stainless cup and OLED display feel durable and readable
Cons
- Lower capacity than the Maestri House S2 or the magnetic model
- Exact cup diameter is not clear from the title
It does more than the SubScale thanks to the timer, but the SubScale has the clearest published dimensions.
6. Jaan & Zen Dosing Cup Scale – Best for weighing beans and catching grounds in a compact cup
Jaan & Zen’s listing frames its cup as a built-in scale that lets you weigh beans, catch grounds and dose with precision into a 58mm portafilter. It also mentions a 35 gram figure and USB-C recharging. Because the title is truncated, treat the 35 gram value as unconfirmed: it could be bean capacity, the cup mass, or a tare feature, so check the product page.
A compact cup is a good match for single-dose grinders, where the bean amount is typically 16 to 22 grams. It is less useful if your dose is above 30 grams or if you want to catch a liquid shot directly in the cup.
The best test of any dosing cup is whether it stays steady on the counter when the grinder’s chute meets the rim. Look for a wide base, a non-slip surface and a simple tare button.
Check the product page for the tare function and the auto-off delay as well.
- Type: dosing cup with a built-in scale
- Fit: 58mm portafilter, per the listing name
- Capacity: 35 g figure in the title; meaning, confirm on listing
- Charging: USB-C rechargeable
- Timer, precision and material: confirm on listing
Pros
- Compact and focused on the single-dose workflow
- Weighs beans and grounds in one cup
Cons
- Key specifications are not clear in the title
- May not suit doses above the stated capacity
It is the least documented of the dosing cups here, so the Subminimal SubScale is the safer choice when specifications matter.
Specs Compared
| Product | Type | Precision | Capacity | Timer | Charging | Material |
|---|---|---|---|---|---|---|
| Bucanim dosing cup scale | Dosing cup with scale | 0.01 g | Confirm on listing | Confirm on listing | USB-C | Stainless steel |
| Subminimal SubScale | Dosing cup with scale | 0.1 g | 99.9 g display; about 60 g beans | No | USB-C | Tritan |
| Magnetic 2-in-1 scale and cup | Scale with detachable cup | 0.1 g | 500 g | Confirm on listing | Confirm on listing | Confirm on listing |
| Maestri House S2 | Platform shot scale | 0.1 g | About 2,000 g | Auto and manual | USB-C | Borosilicate glass |
| modone 3-in-1 scale | Scale, timer and cup | 0.1 g | 300 g | Auto timer | USB-C | SUS304 stainless |
| Jaan & Zen dosing cup | Dosing cup with scale | Confirm on listing | 35 g stated; confirm on listing | Confirm on listing | USB-C | Confirm on listing |
How We Chose These
The six scales were selected from current catalog listings that mention 58mm portafilters, dosing cups or espresso shot scales. Each was compared on whether it is a dosing cup or a platform scale, the stated precision step, maximum capacity, built-in timing, charging method and body material.
Information came from manufacturer and retailer specification pages and from the full listing names. Where figures were missing or inconsistent between sources, the table says to confirm on the listing rather than assuming. Precision claims were treated as display steps, not guaranteed accuracy.
Products with unclear dimensions are flagged in their sections so readers can verify fit before relying on them.
What to Look For
Dosing Cup or Shot Scale?
A dosing cup is a small scale with a cup on top. It sits under the grinder outlet so you can weigh whole beans first, grind them in, and then see how many grams reached the cup. This workflow is called single dosing, and it needs a cup that holds roughly 20 to 30 grams of beans and a display limit above your dose. A shot scale is a flat platform that sits on the drip tray under your cup. It measures how much liquid you extract and often includes a timer, so you can follow a brew ratio. The two jobs are different, which is why many home baristas end up with one of each.
What 58mm Means for a Scale
A 58mm portafilter holds a basket about 58 millimeters across at the rim, which is the standard commercial size. A scale described as 58mm should let the basket or the portafilter seat on or over it without wobble, or it should have a cup rim that lines up with the basket for easy transfer. Many machines use 54mm or 51mm baskets, so verify that the cup mouth is not wider than the top of your grinder’s chute. A good rule of thumb is to check the listed diameter and height against your grinder’s clearance, usually about 100 to 120 mm below the outlet.
Precision, Capacity and Response
For espresso, a resolution of 0.1 gram is the working standard. At an 18 gram dose, 0.1 gram is about half of one percent. Finer steps such as 0.01 gram look attractive but rarely change the taste in the cup, and the noise from a draft or a hot basket can be larger than the step. Capacity matters more than most people expect: 100 grams is fine for beans, but a shot scale should handle at least 300 grams so a cup and a double shot fit within range. Fast response time is the other key trait. An auto timer should start when the first drop lands, not when you press a button.
Power, Water and Heat
Most of these products are rechargeable over USB-C. Charge them from a normal computer or low-power adapter and avoid using a damaged cable, because lithium batteries can swell or overheat if abused. Water resistance ratings such as IPX4 mean splash resistance, not submersion, so do not run a cup under the tap while the unit is on. Keep scales away from steam wands and hot drip trays, and use the silicone pad or a folded towel under the scale if the surface gets warm.
Cleaning and Static
Ground coffee carries static charge and oils, which cling to plastic and can add a few tenths of a gram to a reading. Wipe the cup with a dry cloth after each session, wash it with mild soap weekly, and dry it fully before use. A small spritz of water on whole beans before grinding, known as the Ross droplet technique, reduces static and retention, but keep moisture off the scale electronics.
Putting It Together
A worked example: you want an 18 gram dose and a 2:1 ratio. Weigh 18.0 grams of beans in the cup, grind them, and confirm the cup reads about 17.8 to 18.0 grams, accounting for retention. Place the portafilter on the machine and set the shot scale on the tray with the timer running. Stop at 36 grams of liquid, around 25 to 32 seconds. If the shot runs faster, grind finer; if slower, grind coarser.
Questions
Are both a dosing cup and a shot scale needed?
Not always. If you grind into a portafilter and weigh the liquid, a platform scale with a timer such as the Maestri House S2 covers the essentials. A dosing cup becomes useful when you single-dose from whole beans and want to see what gets lost in the grinder.
Is 0.01 gram precision necessary for espresso?
No. A 0.1 gram step is the common standard and is precise enough to repeat a recipe. Finer readouts are mostly a display feature and can be affected by air movement and static.
Will these scales fit 54mm or 51mm portafilters?
Some will, but the listings above emphasize 58mm. Subminimal states that a 54mm portafilter needs an adapter, so check cup diameter and rim shape for any other size.
What is a good brew ratio to track?
A common starting point is 1:2, such as 18 grams of coffee for 36 grams of espresso, in roughly 25 to 32 seconds. Light roasts often go longer, near 1:2.5, and ristretto-style shots go shorter.
How long do rechargeable scales last on a charge?
It varies by model and screen type. The Maestri House S2 lists up to about 90 days of standby use, while OLED screens usually drain batteries faster. Check the listing for each product.
Can an ordinary kitchen scale do the job?
Possibly, but kitchen scales are often slow, have large platforms and lack timers. A scale designed for espresso offers a smaller footprint, a faster response and heat-resistant surfaces.
Update History
- October 20, 2026 – Initial publication; product set drawn from current catalog listings.
- Check the product page for current specifications and availability before buying.
Sources
- Manufacturer and retailer specification pages for Subminimal and Maestri House
- Retailer listing titles and specification fields for each product
