Pour Over Coffee Measurements

Pour over coffee measurements live in four competing units: grams (precise, repeatable), tablespoons (convenient, imprecise), coffee scoops (varies by scoop), and "cups" (different in every direction). This page is the conversion reference for all four, plus why grams will save you a year of inconsistent cups even if you've never used a kitchen scale.

The quick-reference chart

Brew size	Water (g)	Water (oz)	Coffee (g)	Coffee (Tbsp)	Coffee (2 Tbsp scoops)
Single cup (V60 01)	250	8.4	15	2.5	1.25
Standard mug (V60 02)	320	10.8	20	3	1.5
Two mugs (V60 03 / 6-cup Chemex)	500–640	17–22	31–40	5–6	2.5–3
8-cup Chemex	800	27	50	8	4

All entries use the standard 1:16 ratio and assume a medium-roast whole-bean coffee. Adjust the coffee weight up by 1–2 g for darker roasts (which weigh less per scoop) or down by 1–2 g for lighter, fruit-forward roasts.

Why grams beats every other measurement

Coffee density varies dramatically by roast level and origin. A level tablespoon of light-roasted Ethiopian beans (dense, hard) weighs about 6 g. A level tablespoon of dark-roasted Sumatran (porous, expanded) weighs about 5 g. That 20% variance ruins consistency: the same "spoonful" brews a strong cup one day and a weak one the next.

Coffee scoops vary even more. A standard 2-tablespoon coffee scoop holds 10–15 g depending on bean type and how packed it is. By switching to grams, you remove the variable — 20 g is 20 g whether you're brewing Banko Gotiti (Ethiopian, light roast, dense) or a darker Sumatran. A $15 kitchen scale is the single most impactful upgrade you can make to your pour over routine.

If you don't have a scale yet

For your first few brews, the tablespoon approximation is good enough. Here are the rules:

Coffee: 1 tablespoon of whole-bean ≈ 5 g (medium roast). Light roasts run closer to 6 g, dark roasts closer to 4 g.
Water: 1 fl oz ≈ 30 g. So a standard 10 oz mug holds about 300 g of water.
Scoop: A standard coffee scoop is 2 tablespoons ≈ 10 g of medium-roast coffee. So 20 g ≈ 2 scoops.

For a 1:16 brew aimed at a 10 oz mug: 2 scoops of coffee + a full 10 oz mug of water. Slightly imprecise but in the ballpark.

Measurements by brewer

Hario V60 measurements

V60 size	Brew capacity	Coffee (g)	Water (g)
V60 01	Single cup (8 oz)	15	250
V60 02	1–2 cups (10–16 oz)	20–25	320–400
V60 03	2–3 cups (16–22 oz)	30–40	500–640

The V60 02 is the most-purchased size and handles single cups through 2-mug brews. The 03 is overkill for solo drinkers but the right pick for households of two.

Chemex measurements

Chemex size	Brew capacity	Coffee (g)	Water (g)
3-cup Classic	15 oz	30	450
6-cup Classic	30 oz	40	640
8-cup Classic	40 oz	50	800
10-cup Classic	50 oz	62	1000

Chemex "cups" are 5 oz per cup — about half a real mug — so a 6-cup Chemex brews 2 actual mugs, an 8-cup brews 3, and so on. See the Chemex Coffee Filters guide for filter sizing.

Kalita Wave measurements

Wave size	Brew capacity	Coffee (g)	Water (g)
Wave 155	Single cup (8–10 oz)	15–20	240–320
Wave 185	1–2 cups (10–16 oz)	20–25	320–400

The 1:16 ratio in plain language

1:16 means one part coffee for every sixteen parts water, by weight. In practice:

20 g coffee + 320 g water = a balanced standard mug (≈ 10 oz).
20 g coffee + 300 g water = a stronger 1:15 ratio (denser, sweeter cup, suits darker roasts).
20 g coffee + 340 g water = a lighter 1:17 ratio (cleaner, brighter cup, suits lighter roasts).

The ratio is the foundation; everything else (grind, temperature, pour pattern) fine-tunes around it. See the main pour over guide for the full ratio discussion.

Common pour over measurement mistakes

Mixing up grams and ounces. 1 fl oz of water ≈ 30 g (close to 1:1 by definition). 1 oz of coffee ≈ 28 g (also close). Don't try to do the math in your head with different units — pick one, stick to it.
Using volume (Tbsp/cups) for coffee, weight (grams) for water. The cup will be inconsistent because Tbsp weight varies by bean. Use weight for both.
Forgetting that Chemex "cups" are 5 oz. A 6-cup Chemex makes 30 oz of brew, not six 8-oz cups.
Measuring after grinding. Always weigh whole beans before grinding — grind beds vary in apparent volume by 20%+ depending on how settled they are.

Pour over measurements FAQ

How much coffee should I use for pour over?

Use the 1:16 ratio: 1 g of coffee for every 16 g of water. That's 20 g coffee for a 10 oz mug (320 g water), 40 g coffee for a 6-cup Chemex (640 g water), or 15 g coffee for a single-cup V60 01 (250 g water). Adjust to 1:15 for darker roasts (stronger cup) or 1:17 for lighter roasts (cleaner cup).

How many tablespoons of coffee for pour over?

About 3 Tbsp of whole-bean medium-roast coffee for a standard 10 oz mug. The conversion is roughly 5 g per Tbsp for medium roasts, slightly more for light roasts and less for dark roasts. Tablespoon measuring is imprecise — a $15 kitchen scale removes this variable and produces a more consistent cup brew to brew.

How much coffee is in one "scoop"?

A standard 2-tablespoon coffee scoop holds about 10 g of medium-roast whole-bean coffee. For a standard mug (10 oz, 320 g water at 1:16), use 2 scoops. For a 2-mug brew, 3–4 scoops. Scoops vary in how settled the coffee is, so the same scoop can vary by 1–2 g — that's why a scale is more reliable.

How many grams of coffee for a Chemex?

Depends on the Chemex size. 6-cup Chemex: 40 g coffee + 640 g water (1:16 ratio, ~22 oz finished coffee). 8-cup Chemex: 50 g coffee + 800 g water (~27 oz). 3-cup Chemex: 30 g coffee + 450 g water (~15 oz). All at the same 1:16 ratio; the only variable is how much coffee you want to brew.

What's the conversion from grams to ounces for pour over?

Two useful approximations: 1 fl oz of water ≈ 30 g (so a 10 oz mug ≈ 300 g of water); 1 oz of coffee ≈ 28 g (so 1 oz of beans ≈ 28 g for ratio purposes, though you'll rarely use ounces for coffee). Don't try to mix units in the same brew — use grams for both or oz for both.

Why does my coffee taste different even when I measure the same way?

Two likely causes: you're measuring by volume (Tbsp or scoops) instead of weight, and the bean density is varying brew to brew. A light-roasted Ethiopian weighs ~6 g per Tbsp; a dark-roasted Sumatran weighs ~5 g per Tbsp. The same "scoop" produces a different brew strength depending on which bag you opened. A scale fixes this completely.

Do you need a scale for pour over?

For your first few brews, no — Tbsp measurements get you in the ballpark. Once you're brewing regularly, yes. A $15 kitchen scale is the single most impactful upgrade for pour over consistency, more than a gooseneck kettle or a fancy grinder. It removes the biggest source of variability and makes every cup repeatable.