What is the standard coffee-to-water ratio for pour over?

Most pour over methods work well at a 1:15 to 1:17 ratio (1 gram of coffee per 15–17 grams of water). The Chemex traditionally uses 1:15, the V60 typically 1:15 to 1:16, and the Kalita Wave around 1:15 to 1:17. These defaults are loaded automatically when you select a method.

Should I measure coffee by weight or volume?

Weight (grams) is strongly recommended. Coffee scoops and tablespoon measures vary widely depending on grind size and how loosely the grounds are packed. A kitchen scale gives consistent, repeatable results every time.

How do I make my pour over stronger or weaker?

Lower the ratio number (e.g. 1:13) for a stronger, more concentrated cup. Increase it (e.g. 1:18) for a lighter, more delicate brew. The ratio slider in this calculator lets you fine-tune without math.

What water temperature should I use for pour over?

A range of 90–96°C (195–205°F) works for most beans. Lighter roasts benefit from higher temperatures (94–96°C) while darker roasts are better at 90–93°C to avoid bitterness.

What is the bloom phase in pour over?

The bloom is an initial pour of about 2–3× the coffee weight in hot water, held for 30–45 seconds. It degasses the coffee and allows even extraction. The suggested pour schedule shown by this calculator includes a bloom step.

Pour Over Coffee Ratio Calculator

Name: Pour Over Coffee Ratio Calculator
Availability: InStock
Author: Nham Vu

Enter your desired brew volume or coffee dose for Chemex, V60, or Kalita Wave and get the exact coffee and water amounts in grams.

Brew Method

Calculate By

Water Amount (g)

Brew Ratio 1 : 15

Stronger (1:10) Lighter (1:20)

Serving Size

Recipe

Coffee

grams

Water

300

grams / ml

Chemex Ratio 1 : 15

Suggested Pour Schedule

Times are approximate. Adjust to your grind size and bean freshness.

Method Notes

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Summary

Enter your desired brew volume or coffee dose for Chemex, V60, or Kalita Wave and get the exact coffee and water amounts in grams.

How it works

Select your pour over method: Chemex, V60, or Kalita Wave.
Choose whether you want to calculate by water volume or by coffee dose.
Enter the amount in grams.
Adjust the brew ratio slider if you prefer a stronger or lighter cup.
Read the calculated coffee and water amounts, plus a suggested pour schedule.

Use cases

Calculate exact coffee grams for a single-cup V60 brew.
Scale up a Chemex recipe for multiple servings without guessing.
Dial in a Kalita Wave recipe with a custom strength preference.
Convert a recipe from cups to grams for scale-based brewing.
Quickly compare how much water each method requires for the same dose.
Find the right ratio when trying a new single-origin bean.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu