How To Craft Amazing Coffee—Golden Ratio Calculator

Clint Doerfler
Clint Doerfler
 | 
Updated: August 11, 2022
       
*This site contains product affiliate links. We may receive a commission for purchases made through these links. This, however, has no bearing on our reviews and comparisons. Disclosure
The water to coffee ratio is a crucial factor in making delicious coffee but it can be hard to remember how much ground coffee you should use with how much water.

Our coffee golden ratio calculator will help you find the perfect coffee for any drip coffee method with ease!

While it’s always best to use a coffee scale for measuring your coffee, our calculator also allows measurement by volume (in tablespoons).

It will provide you with the “golden ratio” for automatic drip coffee, which lies between 1:18 (weaker) to 1:15 (stronger), depending on how strong you prefer your coffee.

Using the Coffee Golden Ratio Calculator

How to use this coffee to water ratio calculator for the perfect cup!
  1. First select how you'll measure your water. By volume (fluid ounces or milliliters) or by weight (grams).
  2. Then select how you want to measure your ground coffee.
  3. Select your desired brew strength. "1" for weak coffee and up to "5" for strong coffee.
  4. Choose the number of servings you'll be preparing. The amount of ground coffee needed will be calculated based on your settings.
Note: Keep in mind that coffee manufacturers consider a "cup" to be 5 oz. — not the standard 8 oz. in a conventional measuring cup.

So, for 6 "cups" in a coffee maker, you're only talking about 30 oz. (6 "cups" x 5 oz. each = 30 oz.).
Some additional conversions that may also assist you.
Std. Measure Equiv. Conv.
1 tbsp 3 tsp 15 mL
1 fl oz 2 tbsp 30 mL
1 cup 8 fl oz 237 mL
1 pint 2 cups 473 mL
1 pint 16 fl oz 473 mL
1 quart 2 pints 946 mL
1 gal 4 quarts 3.8 L
1 gal 128 fl oz 3.8 L

Common Questions

What is the perfect coffee to water ratio?

The answer depends on the type of brewing method (drip coffee, Moka pot, French press, etc.) and how strong you prefer your cup.

In this example, the ideal coffee to water ratio for a drip machine should be roughly 2 tbsp of coffee (or 14.3g / 0.5oz) for every 8oz of water. This will get you halfway between the golden ratio of 1:15 to 1:18 coffee to water ratio. You can then make adjustments to suit your personal taste.
Clint Doerfler
Clint Doerfler is the founder of Coffee Gear Gurus®, where he helps coffee lovers of all levels brew better coffee at home. When he’s not reviewing gear, he’s enjoying music or true crime with his family.
This article was last updated: August 11, 2022

— Keep Exploring —

Fellow Prismo Review: Can This AeroPress Attachment Really Brew Espresso at Home?

Looking for a compact, affordable way to make espresso-style coffee at home? CoffeeGearGurus.com reviews the Fellow Prismo AeroPress attachment and shares their real-world experience with it.

Read More
Wake Up and Smell the Real Stuff: The Best Drip Coffee Makers for 2025

Finding the best drip brew coffee maker in 2025 isn’t about fancy features or flashy displays — it’s about which machine consistently brews a bold, balanced cup without the fuss. After hands-on testing with top models from Ratio, Bonavita, GE, Breville, and Zwilling, I’ve narrowed it down to the brewers that actually deliver. Whether you want high-end pour-over quality or just solid morning coffee without the guesswork, this guide breaks down what matters most.

Read More
The Best Moka Pot of 2025: I Tested 11 Moka Pots—Two Were Clearly Superior

Discover the best Moka pot for rich, stovetop coffee. We tested 11 brewers to find the top pick for 2025. From Bialetti to stainless steel Moka pots—here’s what to buy.

Read More
Do You Have To Brew Cold Brew in the Refrigerator?

Is cold brew coffee always cold? Let's spill the beans in this exploration of coffee's cooler side.

Read More
What Is Fair Trade Coffee, and What Does It Mean?

Transform your coffee into a force for good. Learn about fair trade coffee, its benefits and the brands that support farmers and the planet. Discover now!

Read More
Top Rated Espresso Machines For Home

Based on extensive research, we've hand-picked the top rated espresso machines for home—plus, everything else you need to know to get the most out of your machine.

Read More
Embark On Your Journey To Amazing Coffee.
Copyright © 2024

Products

We’re an affiliate and work hard to find products you’ll love.

When you click our links, then buy on Amazon, we earn from qualifying purchases (at no extra cost to you), and we sincerely appreciate it.

It helps us to continue doing what we love—finding & reviewing the best coffee gear for awesome readers like you.
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram