Coffee Measurement Converter
Grams, ounces by weight, teaspoons, tablespoons, scoops — with grind-size ranges.
Ounces by weight are exact. Volume columns show the typical value and low–high range for medium-ground coffee. Why do ranges vary?
| Grams | oz by weight Exact | Teaspoons ≈ | Tablespoons ≈ | Scoops ≈ |
|---|---|---|---|---|
| 5 g | 0.18 oz | 2.72.2–3.4 | 0.90.7–1.1 | 0.440.37–0.56 |
| 7 g | 0.25 oz | 3.73.1–4.7 | 1.21–1.6 | 0.620.51–0.79 |
| 10 g | 0.35 oz | 5.34.4–6.8 | 1.81.5–2.3 | 0.890.74–1.13 |
| 12 g | 0.42 oz | 6.45.3–8.1 | 2.11.8–2.7 | 1.070.88–1.35 |
| 15 g | 0.53 oz | 86.6–10.1 | 2.72.2–3.4 | 1.331.1–1.69 |
| 18 g | 0.63 oz | 9.67.9–12.2 | 3.22.6–4.1 | 1.61.32–2.03 |
| 20 g | 0.71 oz | 10.78.8–13.5 | 3.62.9–4.5 | 1.781.47–2.25 |
| 25 g | 0.88 oz | 13.311–16.9 | 4.43.7–5.6 | 2.221.84–2.82 |
| 30 g | 1.06 oz | 1613.2–20.3 | 5.34.4–6.8 | 2.672.21–3.38 |
| 50 g | 1.76 oz | 26.722.1–33.8 | 8.97.4–11.3 | 4.453.68–5.64 |
| 100 g | 3.53 oz | 53.444.1–67.6 | 17.814.7–22.5 | 8.97.35–11.27 |
Volume values use medium-ground coffee at typical density. Standard 2-tbsp scoop (29.6 mL). Ranges reflect documented density variation — always weigh for precision.
For accurate measurements
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A digital scale removes all guesswork — 10 g is always 10 g.
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Coffee grams to teaspoons
Grams are mass. Teaspoons are volume. Converting between them requires knowing how densely your coffee is packed — and that depends on grind size. A level teaspoon of medium-ground coffee holds approximately 1.9 g (typical), with a range of 2.3–1.5 g depending on how the grounds settle.
Use the calculator above and select your grind profile to see the low, typical, and high estimate for your situation.
Coffee grams to tablespoons
One level US tablespoon of medium-ground coffee holds approximately 5.6 g (typical). Fine grinds (espresso, moka pot) can pack up to 8.4 g into the same tablespoon. Coarse grinds (French press) may hold as little as 3.1 g.
This more-than-2× range is why tablespoon measurements are unreliable for recipes that specify grams. Switch to a scale whenever precision matters.
Coffee grams to ounces by weight
The gram-to-ounce conversion is exact: 1 oz = 28.349523125 g (international avoirdupois definition). No density or grind size is involved. 10 g = 0.35 oz. 30 g = 1.06 oz. 100 g = 3.53 oz.
Important: this tool only handles ounces by weight, not fluid oz (fl oz), which measures volume (≈29.6 mL each) and is irrelevant to coffee dose measurements.
Coffee scoops to grams
A standard 2-tablespoon scoop holds 29.6 mL. Filled with medium-ground coffee, that is approximately 11.2 g (typical). But manufacturers produce scoops ranging from 1 to 3 tablespoons — and the gram weight also depends on your grind. Enter your actual scoop volume in the calculator’s scoop-size field.
How much coffee is in one scoop?
With a standard 2-tablespoon scoop and medium grind, the range is 13.6–8.9 g, with a typical value around 11.2 g. Many packaging labels list a serving as 10–12 g — a rounded approximation for a 2-tbsp scoop at medium-dark grind.
If your brew tastes weak or strong when using the scoop, the answer is almost always to weigh your coffee instead.
Why ground coffee measurements vary
Ground coffee has a variable bulk density — the mass per unit of volume. Three factors drive most of the variation:
Grind size is the biggest factor. Finer particles pack together more closely, leaving less air space. A level tablespoon of fine espresso grind can weigh nearly twice as much as the same tablespoon of coarse French-press grind.
Measurement method also matters. Scooping and levelling compacts grounds differently from gently spooning. Laboratory bulk-density measurements use standardised gravity-fill methods that typically yield lower values than kitchen scooping.
Freshness and humidity have a smaller but real effect. Freshly ground coffee is fluffier; rested coffee settles slightly.
Weight versus volume
Grams measure mass — always the same regardless of how you measure. Teaspoons and tablespoons measure volume, so the gram equivalent of a teaspoon varies with every grind change. All professional coffee recipes (and the SCA Golden Cup Standard) specify dose in grams for this reason.
Why a coffee scale is more accurate
A digital scale removes grind-size uncertainty entirely. Whether you use fine, medium, or coarse — 18 g is 18 g. Volume measurements introduce roughly ±30–50% variation depending on grind and technique. For dialling in espresso or following a pour-over recipe exactly, a scale is the only reliable tool.
Coffee measurement versus brew ratio
Measuring your dose in grams is the first step — but the ratio of coffee to water determines brew strength. Common ratios: espresso 1:2, pour over 1:15, French press 1:12. Use the Brewax Brew Ratio Calculator to calculate how much water to use once you know your dose.
Common Questions
10 grams of medium-ground coffee equals approximately 5.3 tsp (typical). The range is 4.4–6.8 tsp depending on grind size and how you measure. Fine grinds are denser and give fewer teaspoons; coarse grinds give more. Use the calculator above to adjust for your grind.
10 grams of medium-ground coffee equals approximately 1.8 tbsp (typical). The range is 1.5–2.3 tbsp depending on grind size. A level tablespoon of medium-ground coffee weighs around 5.6 g, so two tablespoons is close to 10 g — but always weigh to be sure.
10 grams of coffee equals exactly 0.35 oz by weight. This is a precise mass-to-mass conversion: 1 oz = 28.349523125 g exactly. Gram-to-ounce conversions are exact — no density assumption is needed. Note: this is ounces by weight — not fluid oz (fl oz), which measures volume.
One level teaspoon of medium-ground coffee weighs approximately 1.9 g (typical). The range is 1.5–2.3 g depending on grind and scooping method. Fine grinds (espresso) can reach 2.8 g/tsp; coarse grinds (French press) sit closer to 1 g/tsp.
One level tablespoon of ground coffee weighs approximately 5.6 g at medium grind (typical). The full range across grind sizes runs from 3.1–8.4 g per tablespoon. For precision, use a scale — tablespoons are a rough guide only.
A standard 2-tablespoon coffee scoop (29.6 mL) filled with medium-ground coffee holds approximately 11.2 g (typical). The range is 8.9–13.6 g. Scoop sizes vary by manufacturer. Adjust the scoop-size field in the calculator.
No — coffee scoop sizes vary significantly. The most common is 2 US tablespoons (29.6 mL), holding approximately 11.2 g of medium-ground coffee. But 1-tablespoon and 3-tablespoon scoops are also common. To find your scoop’s size, fill it with water and measure.
Yes — grind size is the biggest factor in volume-to-weight variation. One tablespoon of fine (espresso) grind can weigh up to 8.4 g, while the same tablespoon of coarse (French press) grind may weigh as little as 3.1 g. That is more than a 2× difference — why weighing is far more consistent.
A scale measures mass directly — independent of grind size, packing, or scoop size. 10 g is always 10 g. Volume measurements for a single 10 g dose at medium grind can range from 4.4 to 6.8 tsp — almost a 2× difference. For any recipe specifying a gram weight, a scale is the only reliable tool.