How Many Grams of Coffee Are in a Tablespoon?

Short answer: a level US tablespoon holds about 5 to 6 grams of ground coffee, and roughly 5 to 5.5 grams of whole beans. That is the figure most recipes have in mind when they ask how many grams of coffee in a tablespoon. A heaping tablespoon holds noticeably more, and the exact number shifts with grind size, roast level and how you scoop.

Below you will find where that number comes from, a ready-made conversion table, and worked examples so you can turn any recipe written in grams into spoons, or the other way around.

Key takeaways

• Use 5.5 g per level US tablespoon of ground coffee as a working average.
• Grams = spoon volume × bulk density. A US tablespoon is about 14.8 ml; ground coffee weighs roughly 0.4 g per ml.
• Finer grinds and lighter roasts pack slightly more weight into the same spoon.
• Heaping spoons are unpredictable; a kitchen scale beats any spoon for repeatable coffee.

In this article

1. The math behind the number
2. How many grams of coffee in a tablespoon: conversion table
3. What changes the weight of a spoonful
4. Worked examples
5. FAQ

The math behind the number

Weight from a spoon is always the same formula:

grams = spoon volume (ml) × bulk density (g/ml)

Bulk density is the weight of a loose pile of particles, air gaps included, which is exactly what a spoon scoops up.

• A US tablespoon is half a US fluid ounce: 29.57 ml ÷ 2 = 14.79 ml.
• The Engineering ToolBox lists ground coffee at about 400 kg/m³ (0.40 g/ml) and roasted whole beans at about 368 kg/m³ (0.37 g/ml).

So for ground coffee: 14.79 × 0.40 = 5.9 g. For whole beans: 14.79 × 0.368 = 5.4 g.

In a real kitchen, coffee spooned loosely from a bag sits a little fluffier than a lab sample, so most people land between 5 and 6 g for a level spoon of grounds. That is why 5.5 g is a sensible everyday average, and why recipe writers often round to 5 g.

How many grams of coffee in a tablespoon: conversion table

All values are for level spoons and use the densities above. Treat them as estimates within about 10%.

Notice the Australian tablespoon: at 20 ml it holds about a third more than a US one. If you follow an Australian recipe with American spoons, your coffee will come out weaker.

Grams to tablespoons (reverse)

What changes the weight of a spoonful

Grind size

A storage study on roasted and ground coffee, published in the Brazilian journal Revista Brasileira de Engenharia Agrícola e Ambiental, found that finer grinds had higher bulk density than medium and coarse grinds. Small particles fill the gaps between each other, so a spoon of espresso-fine coffee weighs a bit more than a spoon of coarse French press grounds. If you switch from a coarse grind to a fine one and keep the same number of spoons, your brew gets slightly stronger.

Roast level

The same study found that the lighter roast was denser than the darker one. Beans expand and lose moisture as they roast, so a dark roast spoonful weighs a little less. One more reason dark roast often tastes stronger yet carries no more caffeine per spoon, a myth we take apart in the dark roast caffeine myth.

Level, rounded or heaping

A level spoon is scraped flat with a knife. A rounded spoon has a gentle dome. A heaping spoon is piled as high as it will hold and can easily carry half again as much coffee as a level one, which is why two people using the same recipe can brew very different cups.

Whole beans vs ground

Beans are bulky and leave big air gaps, so a spoon of beans weighs a little less than a spoon of grounds. Grinding does not change the weight of the coffee itself, only how much fits in the spoon. If you grind fresh, weigh the beans before grinding; our whole bean vs ground guide covers the trade-offs.

Instant coffee

Instant coffee granules and powders vary hugely in density depending on how they were dried. Do not use the ground coffee figures for instant. Check the jar’s label, which lists the gram weight of its own serving.

Worked examples

Example 1: a recipe in grams, a drawer full of spoons

A pour-over recipe calls for 22 g of coffee. Divide by 5.5: 22 ÷ 5.5 = 4. Use 4 level tablespoons.

Example 2: how many tablespoons in a 12 oz bag?

A 12 oz bag holds 340 g. 340 ÷ 5.5 ≈ 62 level tablespoons of ground coffee. At 2 tablespoons per mug, that is about 31 mugs. For a deeper breakdown by brew method, see how many cups in a 12 oz bag.

Example 3: matching a 1:16 ratio

You want 1 g of coffee per 16 g of water for an 8 fl oz (237 ml) mug. 237 ÷ 16 = 14.8 g of coffee, and 14.8 ÷ 5.5 ≈ 2.7 level tablespoons. Round to a generous 2 1/2 spoons, or check our coffee to water ratio guide for other strengths.

Example 4: a 2 oz sample bag

2 oz is about 57 g. 57 ÷ 5.5 ≈ 10 level tablespoons, enough for four or five mugs.

Measure better with fresh coffee

Spoons are fine for daily drip coffee, but a scale gives you the same cup every morning, which is worth it when you are dialing in a new bag. Our coffee scale guide explains what to look for. Whatever you measure with, start with fresh coffee: ours is roasted 1–5 days before delivery and comes whole bean or ground to Coarse, Standard or Espresso. The Best Sellers Sample Pack contains six 2 oz packs, perfect for practicing Example 4 and finding your ratio with different coffees. For an everyday benchmark, the smooth medium-roast Breakfast Blend is an easy coffee to dial in, and you can explore more in our best sellers.

FAQ

Is a tablespoon of coffee 5 grams or 10 grams?

A level US tablespoon of ground coffee is about 5 to 6 grams. The 10 g figure usually refers to a standard coffee scoop, which holds two tablespoons.

How many grams is a heaping tablespoon of coffee?

It varies too much to give one number. A heaping spoon can hold roughly half again as much as a level one. Weigh a few of your own to find out.

How many grams of coffee per cup?

Many brewing guides use around 1 g of coffee per 15 to 17 g of water, which works out to roughly 14 to 16 g for an 8 fl oz mug, or about 2 1/2 to 3 level tablespoons.

Is a tablespoon of whole beans the same as ground?

Close, but not the same. Whole beans weigh slightly less per spoon because of the larger air gaps between them.

Sources

1. The Engineering ToolBox. Food products: bulk densities.
2. Corrêa PC et al. Preservation of roasted and ground coffee during storage. Part 2: bulk density and intergranular porosity, Revista Brasileira de Engenharia Agrícola e Ambiental.
3. U.S. customary units: 1 US fluid ounce = 29.5735 ml; 1 tablespoon = 1/2 fluid ounce (NIST Handbook 44, Appendix C).

Facts checked in October 2026.

Keep reading: Coffee to water ratio · Coffee scale guide · Coffee beans per cup · Best sellers