Pour-Over Coffee Ratio Guide

The ratio of coffee to water is one of the easiest variables to control, and it has a big effect on how your pour-over tastes. Once you understand how it works, you can make your coffee stronger or lighter without touching the grinder.

What the Ratio Means

A pour-over ratio compares the weight of coffee to the weight of water. A 1:16 ratio means 1 gram of coffee for every 16 grams of water. For 20 grams of coffee, that’s 320 grams of water.

Weighing both with a coffee scale is the only reliable way to hit your ratio. Scoops and measuring cups are too inconsistent.

The Standard Range

Most pour-over recipes fall between 1:15 and 1:17.

• 1:15 gives a stronger, heavier cup
• 1:16 is a balanced middle ground
• 1:17 gives a lighter, more delicate cup

Start at 1:16 and adjust from there.

Strength vs Extraction

It’s important to separate two ideas. Strength is how concentrated the coffee is. Extraction is how much flavor you’ve pulled from the grounds.

Changing the ratio mainly affects strength. Changing grind size mainly affects extraction. If your coffee tastes sour or bitter, adjust the grind. If it tastes good but too strong or too weak, adjust the ratio.

Quick Reference Recipes

Here are some easy amounts at 1:16:

• 1 cup: 15 g coffee, 240 g water
• 1 large mug: 20 g coffee, 320 g water
• 2 cups: 30 g coffee, 480 g water
• 4 cups: 50 g coffee, 800 g water

For larger batches, you’ll usually need a slightly coarser grind to keep brew time reasonable. A big Chemex batch takes longer to drain than a single V60.

Ratios for Different Roasts

Roast level affects which ratio tastes best.

Light roasts are bright and complex but can taste thin. A slightly tighter ratio, around 1:15, adds body.

Dark roasts are already bold. A wider ratio, around 1:17, keeps them from tasting heavy or harsh.

Ratios for Iced Pour-Over

Iced pour-over, sometimes called Japanese-style iced coffee, brews hot coffee directly onto ice. You replace some of the brewing water with ice so the final drink isn’t diluted.

A typical recipe uses 20 grams of coffee, 200 grams of hot water, and 120 grams of ice in the carafe. Use a slightly finer grind, since less hot water passes through the coffee.

How Ratio Interacts With Other Variables

Ratio doesn’t work alone. Water temperature affects how quickly flavors dissolve. The bloom affects how evenly the water reaches the grounds. Your brewer’s flow rate affects contact time.

That’s why it helps to fix most variables and change one at a time. Pick a ratio, hold it steady, and adjust grind size until the taste is balanced. Then tweak the ratio for strength.

Comparing to Other Methods

Pour-over ratios are similar to drip machines and slightly weaker than French press, which usually runs 1:12 to 1:15. Cold brew ratio recipes are much stronger, often 1:4 to 1:8 for concentrate. Espresso brew ratio is in a different league entirely, usually 1:2.

Knowing these ranges makes it easier to move between methods without starting from scratch.

Keep Notes

Write down your ratio, grind setting, and brew time for each coffee. When you find a combination you love, you’ll be able to repeat it, and you’ll have a reference point when you open a new bag.