Why Weigh Your Coffee? How to Use a Coffee Scale (with Ratios for Every Brewer)
If your coffee tastes great one day and flat the next, the measuring is often the reason. Scoops and spoons measure volume, but coffee varies in how much it weighs per spoonful. Ratio Coffee notes that one scoop can hold anywhere from 8 to 14 g depending on the bean, roast and grind. That’s a big swing in strength from the same scoop.
A scale removes that guesswork. This guide covers why weighing helps, what to look for in a scale, how to use one, and starting ratios for each brew method.
Why weighing makes better coffee
- The same cup every time. When you know you used 20 g of coffee and 320 g of water, you can repeat a good cup exactly.
- You can fix problems. If the dose is fixed, a sour or bitter cup points to the grind or the brew time, not the scoop.
- Easy to scale recipes. A ratio works for one cup or a full pot. Our coffee ratio calculator does the maths.
- Less waste. You stop over-dosing to be safe, which matters for cafés buying coffee by the kilo.
Beans made for espresso and milk drinks
For lattes, cappuccinos and iced coffee, try our Arabica-Robusta Blend or bold Robusta, roasted daily and ground to order for espresso or moka pot.
Shop the Blend →What to look for in a coffee scale
| Feature | Why it matters |
|---|---|
| Reads to 0.1 g | Needed for espresso doses. For filter coffee, 1 g steps are enough. |
| Built-in timer | Lets you track bloom and brew time without a second device. |
| Fast response | The number keeps up as you pour, so you don’t overshoot. |
| Tare button | Zeroes the scale with the cup or brewer on it. |
| Size and capacity | Must fit your brewer or a portafilter and cup, and weigh at least 1 to 2 kg. |
| Water resistance | Coffee bars get wet. A splash-resistant scale lasts longer. |
A basic kitchen scale works for French press and batch brewing. For pour-over and espresso, a coffee scale with a timer and 0.1 g steps makes life easier.
How to use a coffee scale, step by step
- Put your cup or grinder container on the scale and press tare.
- Weigh the whole beans you need, then grind them.
- Put the brewer, with a filter if it uses one, on the scale. Add the grounds and tare again.
- Start the timer and pour. Watch the weight until you reach your target water amount.
- Write down the dose, water, grind setting and time, and how it tasted. Change one thing next time.
Starting ratios by brew method
A ratio is grams of coffee to grams of water. Water weighs about 1 g per ml, so 300 g of water is about 300 ml. These are starting points. Adjust to taste.
| Method | Starting ratio | Example | Source |
|---|---|---|---|
| Pour-over | 1:16 | 25 g coffee to 400 g water | Complete Home Barista |
| Drip machine and general brewing | About 1:18 | 55 g coffee per 1 litre water | SCA Gold Cup standard, via Seattle Coffee Gear |
| Espresso | 1:2 | 18 g coffee in, about 36 g espresso out | Clive Coffee |
Our coffee to water ratio chart has amounts for 1, 2, 4 and 8 cups, and the coffee strength calculator shows how changing the ratio changes the cup.
No scale yet?
Weigh your usual scoop of your usual coffee once, on any kitchen scale, and write down the number. It won’t be exact for every coffee, but it beats guessing. When you change to a different bean or roast, weigh the scoop again.
For cafés
A scale at every station keeps drinks consistent between baristas and shifts, and helps control coffee cost per cup. Our guides to dialing in espresso and portion control and waste show how cafés use weighing day to day. Cafés buying 10 kg or more can see wholesale pricing.
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