Guide

French Press Ratio Guide

Choose the right French press coffee ratio for rich, balanced or lighter immersion-brewed coffee.

By Online Coffee Guide Editorial TeamPublished August 6, 2025Updated April 9, 20263 min read

French press coffee setup with coarse grounds weighed on a scale, beans, water, and mugs.

On This Page5 Sections

Quick Answer

A good French press ratio is 1:15 to 1:16. Use 30g coffee and 450g water for a rich cup, or 30g coffee and 480g water for a balanced cup. For a lighter cup, move toward 1:17. Grind size and steep time still matter; ratio controls strength, not the whole flavor.

Key Takeaways

1Start with 1:16 for balanced French press coffee.
2Use 1:15 for a richer, heavier cup.
3If the cup is silty or bitter, fix grind and steep time before changing ratio.

Coarse French press coffee grounds beside a metal plunger filter. — French press ratios work best with a coarse grind that limits bitterness and sediment.

French press is an immersion method, so ratio behaves differently than in pour over. The grounds sit in water, which makes extraction more even and less dependent on pouring technique. That makes French press forgiving, but not automatic.

Recommended Ratios

Reader GuideCoffee Reference Table
Goal	Ratio	Example
Rich and heavy	1:15	30g coffee / 450g water
Balanced	1:16	30g coffee / 480g water
Lighter	1:17	30g coffee / 510g water
Very strong	1:14	30g coffee / 420g water

Most users should start at 1:16. Move stronger if the coffee tastes thin; move lighter if it feels too dense.

Ratio Calculator

Reader GuideCoffee Reference Table
Coffee	1:15	1:16	1:17
20g	300g water	320g water	340g water
25g	375g water	400g water	425g water
30g	450g water	480g water	510g water
40g	600g water	640g water	680g water

How To Adjust

Reader GuideCoffee Reference Table
	Taste	Better Adjustment
	Weak and watery	Use 1:15 or steep longer
	Heavy but dull	Use 1:16.5 or pour off sooner
	Bitter and rough	Grind coarser or shorten steep
	Sour	Grind slightly finer or steep longer
	Too much sediment	Grind coarser and let coffee settle

What To Read Next

Use this with How to Make French Press Coffee, Coffee to Water Ratio Guide, Coffee Grind Size Guide, and Coffee Brewing Methods Guide. For method selection, continue with French Press vs AeroPress.