Coffee Ratio Guide: How Much Coffee Per Cup for Every Brew Method

The coffee ratio is the single most adjustable variable in home brewing. Most people who drink weak coffee are not using bad beans or the wrong brewing method , they are using too little coffee. Most people who drink bitter, harsh coffee are not using bad technique , they are using too much or the wrong ratio for their method. Getting the coffee ratio right is the fastest way to improve any cup without changing equipment or beans.

This guide gives you the correct ratio for every brewing method and explains how to adjust for your preferred strength.

Coffee Ratio Reference: 6 Brewing Methods

How to Use Coffee Ratio Correctly

A scoop is not a reliable unit. Different grind sizes and bean densities mean a scoop can contain anywhere from 7 to 12 grams of coffee. The SCA Gold Cup Standard defines the correct filter coffee ratio at 55 grams per liter of water, which is approximately 1:18. Ratios of 1:15 to 1:17 produce a slightly stronger cup most home drinkers prefer. The only way to hit these ratios consistently is to weigh your coffee on a scale. A $10 digital scale is the most impactful home brewing upgrade.

For weak coffee: increase the dose by 1 to 2 grams with the same water volume. Do not add more water to a finished cup , this dilutes flavor without improving it. For bitter or harsh coffee: check grind size and water temperature before changing the ratio. Over-extraction causes bitterness more often than a high dose does. See our coffee mistakes guide for the most common ratio errors.

Start at 1:15 for pour over and 1:16 for drip. For 300ml, use 19 to 20g. For 500ml, use 31 to 33g. Pour over uses a slightly higher ratio than drip because controlled pouring gives more extraction efficiency. Keep the ratio consistent and adjust grind size before changing the ratio when troubleshooting. See our pour over guide for the full technique alongside the ratio.

French press uses a 1:12 to 1:15 ratio. Immersion keeps grounds in contact with water the whole steep time, extracting more per gram than drip. A stronger ratio compensates for the lack of flow-through extraction. Start at 1:13. Go to 1:12 for more strength, 1:14 for less. See our French press brewing guide for the full method paired with this ratio.

Espresso uses a 1:2 ratio of dry coffee in to liquid espresso out. 18g in should yield 36g out in 25 to 30 seconds. A shorter ratio (1:1.5) produces a ristretto. A longer ratio (1:3) produces a lungo. Measure by weight, not volume or time. See our espresso at home guide for how ratio interacts with grind and dose.

Do You Need a Scale to Use Coffee Ratio?

Without a scale, you estimate both dose and water volume. Small errors compound quickly and make it impossible to diagnose what changed between brews.

Without a scale, start with one level tablespoon of coffee per 6 oz of water for drip and pour over. This approximates a 1:16 ratio depending on grind and density. It is a useful starting point until you buy a scale. For espresso, a scale is not optional , the 1:2 ratio must be hit by weight.

Browse our premium whole bean coffee , fresh beans hit the target ratio better than stale ones at any measurement.

FAQ: Coffee Ratio

The SCA standard is approximately 1:18. Most home drinkers prefer 1:15 to 1:16. 1:15 is a good starting point for pour over and French press. 1:17 suits most drip machines.

Two 6 oz cups is about 350ml. At 1:15, use 23g. At 1:16, use 22g. At 1:17, use 21g. 350 divided by 15 = 23.3g.

No. Each method extracts differently. French press and AeroPress require a stronger ratio than drip or pour over , grounds stay in contact with water longer. Cold brew uses the most coffee by ratio because cold water is far less efficient at extracting flavor. Espresso uses its own ratio system entirely. See our coffee brewing methods guide for how extraction differs between methods.

Grind too coarse, water too cool, or stale beans. A correct coffee ratio with too coarse a grind under-extracts and tastes weak and sour. Water below 195°F also under-extracts. And stale coffee simply does not have the aromatic compounds left to extract regardless of ratio. Check freshness first, then grind size, then ratio. See our espresso troubleshooting guide for how these variables interact.

Start at 1:7 for cold brew concentrate: 100g of coffee per 700ml of cold water. Steep 12 to 24 hours. Dilute 1:1 before serving. See our cold brew guide for step-by-step instructions.

Get the Coffee Ratio Right , Start with Fresh Beans

Fresh beans make every ratio work better. Browse our premium whole bean coffee , dark, medium, and light roast , all shipped within 1 to 2 business days of roasting.

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