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An espresso scale is the cheapest piece of gear that makes the biggest difference to consistency. Espresso recipes are written in grams, and the variables are small: half a gram of coffee or a few grams of yield can turn a sweet shot sour. Without a scale, you're guessing.
A good espresso scale does three things: it reads to 0.1 g, it times the shot, and it fits on your drip tray under the portafilter with a cup on top. Extras like flow rate, auto-start timers and water resistance are nice, but those three basics are what you need every day.
Below are three coffee scales that cover the main price tiers, from a versatile budget-friendly scale to a premium espresso-only design.
Quick picks
- Best Overall: TIMEMORE Black Mirror Basic 2Best for espresso and pour-over with an auto timer, flow rate and a rechargeable battery.
- Best for Espresso and Pour-Over: Hario V60 Drip ScaleBest for a simple, long-running scale with a built-in timer.
- Best Premium: Acaia LunarBest for a compact, water-resistant espresso scale that sits on the drip tray.
Comparison table
| Scale | Best for | Capacity / resolution | Timer | Power | Amazon |
|---|---|---|---|---|---|
| TIMEMORE Black Mirror Basic 2 | All-round value | 2,000 g / 0.1 g | Auto and manual, flow rate | Rechargeable (USB-C, 1,600 mAh per listing) | Check price |
| Hario V60 Drip Scale | Simple and proven | 2,000 g / 0.1 g | Built-in timer | 2 AAA batteries | Check price |
| Acaia Lunar | Premium espresso | 0.1 g (per listings) | Auto modes, flow rate | Rechargeable | Check price |
The best espresso scales, reviewed
1. TIMEMORE Black Mirror Basic 2: Best Overall
Who it's for: home baristas who want one scale for espresso and pour-over with useful extras.
The Black Mirror Basic 2 is one of the most popular coffee scales for good reason. Its listing describes a 2,000 g capacity with 0.1 g readability, an auto timer that starts when the scale detects a weight change, a manual timing mode and a flow rate display. A 1,600 mAh rechargeable battery charges over USB-C, and the display is hidden when the scale is off for a clean look. Listings give it at about 152 x 130 x 26 mm.
The auto timer is the practical win for espresso: place your cup, start the shot, and the timer starts when the first drops land. The flow rate readout helps you spot a gushing or choking shot as it happens.
Pros
- 0.1 g resolution up to 2 kg
- Auto-start timer and flow rate
- Rechargeable battery
- Works for espresso and pour-over
Cons
- Larger than espresso-only scales; check your drip tray
- Several versions and model numbers are sold; check the listing
TIMEMORE Black Mirror Basic 2 Coffee Scale
by TIMEMORE
2. Hario V60 Drip Scale: Best for Espresso and Pour-Over
Who it's for: people who want a straightforward, proven scale with a timer.
Hario's scale has been a coffee-bar staple for years. Listings describe a 2,000 g capacity with 0.1 g increments and a built-in timer, running on two AAA batteries. Auto power-off kicks in after five minutes, but not while the timer is running, so it won't switch off mid-brew. The newer model adds faster start-up, quicker response, anti-slip rubber feet and improved water resistance, per its listing.
It doesn't have flow rate or an auto-start timer, but for weighing doses and yields it does the job reliably. Some owners note a slight lag in the display and no backlight; for espresso, start the timer a moment before the pump.
Pros
- Simple, proven design
- 0.1 g resolution with built-in timer
- Won't auto-off while timing
- Replaceable AAA batteries
Cons
- No auto-start timer or flow rate
- Slight display lag reported by some owners
- Not fully waterproof
Hario V60 Drip Scale
by Hario
3. Acaia Lunar: Best Premium
Who it's for: espresso enthusiasts who want a compact, durable scale built for the drip tray.
The Lunar is Acaia's espresso scale, sized to sit on a machine's drip tray. Listings describe 0.1 g resolution, an anodized aluminum body, water-resistant electronics, a real-time flow rate display and auto-timing modes. The box includes a heat-resistant pad and a 100 g calibration weight, and listings mention a 2-year limited warranty that also covers water damage.
It's a premium price tier for a scale, and many people never need it. But if you pull several shots a day and want a scale that survives spills and fits under any portafilter, it's the benchmark.
Pros
- Compact, drip-tray size
- Water-resistant aluminum body
- Flow rate and auto-timer modes
- Calibration weight included
Cons
- Premium price tier
- Espresso-focused; smaller platform for pour-over
- Several Lunar versions and sellers on Amazon; check the listing
Acaia Lunar Espresso Scale
by Acaia
How to choose an espresso scale
Resolution: 0.1 g or bust
Espresso doses run from about 7 g (a single) to 22 g (a large double), and yields are a few tens of grams. A scale that reads in 1 g steps can't tell 18.0 g from 18.6 g, which is enough to change shot time. Every scale here reads to 0.1 g.
A built-in timer
Dialing in espresso means watching weight and time together. A built-in timer saves juggling a phone. Auto-start timers (TIMEMORE, Acaia) begin when liquid hits the cup, which removes one more step.
Size and drip-tray fit
This is where many people go wrong. Measure:
- The drip tray, to check the scale's footprint fits.
- The height under the portafilter, to check a scale plus a cup still fits.
Compact espresso scales are designed for this; larger pour-over scales may not fit some machines.
Speed and responsiveness
A shot changes weight quickly at the end. A responsive scale lets you stop at your target yield without overshooting by a few grams. Some lag is normal; learn to stop the shot a gram or two early.
Water resistance and durability
Espresso is splashy. Water-resistant scales survive drips and spills; others need a protective cover or quick wiping. A heat-resistant pad protects the scale from hot cups.
Power: rechargeable or batteries
Rechargeable scales save on batteries and usually charge over USB-C. Battery scales are easy to keep running and never stop because you forgot to charge them. Either works.
Flow rate: nice, not necessary
Flow rate shows grams per second. It helps you understand how a shot develops, but timer plus weight covers the essentials.
Espresso scale vs pour-over scale
Most coffee scales can do both jobs, but each is designed with one in mind:
- Espresso scales are compact enough to sit on a drip tray, respond quickly to small changes and often start the timer automatically when liquid hits the cup. Capacity matters less because a shot weighs only a few tens of grams.
- Pour-over scales have a larger platform for drippers and carafes and a higher capacity, often up to 2 kg, so they can weigh a full brew plus the brewer.
If you only make espresso, a compact scale is easiest. If you make both, a 2 kg scale with a timer, like the TIMEMORE or Hario, covers both, as long as it fits your drip tray.
Calibrating and caring for a coffee scale
- Calibrate occasionally with a known weight, following the manual. Some premium scales include a calibration weight.
- Keep it dry. Wipe spills right away, and don't run water over a scale unless the maker says it's water-resistant.
- Use a heat-resistant pad under hot cups if the scale came with one.
- Charge or replace batteries before they run flat.
- Don't overload it. Leaning on the scale or dropping a heavy portafilter on it can strain the load cell.
Weighing the dose: before or after grinding?
There are two common ways to weigh your dose:
- Weigh beans before grinding. Common with single-dose grinders: weigh 18 g of beans, grind it all.
- Weigh grounds in the portafilter. Common with hopper grinders: grind by time, then check the dose in the basket on the scale.
Either works. What matters is that the dose is the same every time, so the only variable changing between shots is the one you choose.
How to use an espresso scale when dialing in
- Weigh your beans before grinding (single dosing) or weigh the ground dose in the portafilter.
- Tare the scale with your cup on it, under the portafilter.
- Start the shot and timer together.
- Stop at your target yield, for example about 36 g out from 18 g in.
- Note the time and taste. Adjust grind for time, yield for ratio.
Our how to dial in espresso guide has an interactive helper that turns your dose, yield and time into the next adjustment.
Rounding out your setup
A scale pairs naturally with the other small tools that make espresso consistent: a grinder with an espresso range (see our espresso grinder guide), a well-fitting espresso tamper, and a knock box for spent pucks. If you're just starting, our beginner espresso machine guide covers which machines make learning easiest.
How we chose
We compared manufacturer and retailer specifications (TIMEMORE, Hario and Acaia listings), including capacity, resolution, timer features and power, and owner feedback on responsiveness and durability. Where listings disagree, we note it or leave the spec out. We did not test these scales ourselves.
FAQ
Do I need a scale for espresso?
If you want consistent shots, yes. Espresso recipes are written in grams: a common starting point is 18 g of coffee in and about 36 g of espresso out. Without a scale, you cannot tell whether a fast or slow shot came from the grind, the dose or the yield, so dialing in becomes guesswork.
What accuracy do I need in an espresso scale?
Look for 0.1 g resolution. Doses are small, around 7 to 22 g, and a difference of half a gram changes the shot. Standard kitchen scales that read in 1 g steps are fine for pour-over batches but too coarse for espresso dosing.
Can I use a regular kitchen scale for espresso?
You can for dosing beans if it reads to 0.1 g, but most kitchen scales read in 1 g steps and are too large to fit on a drip tray under the portafilter. A dedicated coffee scale adds 0.1 g resolution, a built-in timer and a compact size for weighing the shot as it pours.
What does flow rate on a coffee scale mean?
Flow rate shows how many grams per second are landing on the scale. For espresso, it tells you how fast the shot is running in real time, which helps you spot a gushing or choking shot early. It is a useful extra, but a scale with a timer and 0.1 g resolution covers the basics.
Will an espresso scale fit on my drip tray?
It depends on the scale and the machine. Compact espresso scales like the Acaia Lunar are designed to sit on a drip tray, while larger pour-over scales may not fit or may leave too little room for a cup. Measure your drip tray and the gap under the portafilter before buying.
Verdict
The TIMEMORE Black Mirror Basic 2 is the best espresso scale for most home baristas: 0.1 g resolution, an auto timer, flow rate and a rechargeable battery. Choose the Hario V60 Drip Scale for a simple, proven option, or the Acaia Lunar if you want a premium, drip-tray-sized scale built for daily espresso.