Why Timing Espresso Shots Matters
Extraction time is one of the three primary espresso variables (with dose weight and output weight). A 1:2 ratio (18g in, 36g out) extracted in 22 seconds produces a very different cup than the same ratio in 35 seconds — the faster shot is likely under-extracted (sour, thin), the slower shot over-extracted (bitter, harsh). Target extraction time is typically 25–35 seconds for most espresso ratios, with the specific target depending on grind fineness, bean characteristics, and intended ratio.
A shot timer removes the "I think it was about 28 seconds" variable from dialing-in. Combined with a scale (measuring output weight) and a grind size adjustment, precise timing gives you three data points per shot — enough to make targeted adjustments rather than random ones.
Top Picks
Acaia Lunar Scale with Timer
$$$The reference combination for espresso — weight and time simultaneously on the same device. Bluetooth connectivity for the Acaia app. The most used precision tool in specialty espresso.
Check Amazon Check eBayFelicita Arc Scale
$$Acaia Lunar alternative at lower price — weight + time, Bluetooth, app connectivity. Thinner profile fits under most portafilters with less clearance reduction. Strong value vs the Lunar.
Check Amazon Check eBayTimemore Black Mirror Basic+
$$The accessible espresso scale — 0.1g accuracy, built-in timer, no Bluetooth (which most home baristas don't use). Simple, reliable, accurate. Best value espresso scale with integrated timer.
Check Amazon Check eBayBasic Digital Kitchen Timer
$Any timer accurate to 0.1 seconds — a $10 kitchen timer or even the built-in timer on most smartphones. Functional if you already have a separate scale. Inconvenient compared to integrated scale-timer units but completely accurate.
Check Amazon Check eBayShot Timer vs Scale Timer: The Practical Difference
A dedicated shot timer (separate from a scale) gives you one number. A scale with integrated timer gives you two — weight and time simultaneously without manual stopwatch involvement. The integrated approach is clearly superior for dialing in: you see dose weight before pulling, output weight and extraction time during and after. The Timemore Basic+ at its price point makes the choice straightforward.
☕ Recommendation
Timemore Black Mirror Basic+ for the best value integrated scale+timer. Felicita Arc if you want Bluetooth connectivity without the Acaia price. Acaia Lunar if you want the industry reference and use the Acaia app actively.