How Much Water for 40g of Coffee?

Have 40 grams of coffee and need to know how much water to use? Here's exactly how much water you need for the perfect brew.

Quick Answer

For 40g of coffee, use 640ml (21.6 oz) of water

Using the standard 1:16 coffee-to-water ratio

Water Amounts for 40g Coffee by Strength

StrengthRatioWater (ml)Water (oz)
Strong1:15600ml20.3 oz
Medium (Recommended)1:16640ml21.6 oz
Light1:17680ml23.0 oz

Brewing 40g by Method

Pour Over

  • Water: 640ml (21.6 oz)
  • Grind: Medium-fine
  • Brew time: 3-4 minutes
Learn more →

French Press

  • Water: 600ml (20.3 oz)
  • Grind: Coarse
  • Brew time: 4 minutes
Learn more →

Drip Coffee

  • Water: 640ml (21.6 oz)
  • Grind: Medium
  • Brew time: 5-6 minutes
Learn more →

AeroPress

  • Water: 560ml (18.9 oz)
  • Grind: Fine-medium
  • Brew time: 1-2 minutes
Learn more →

Other Coffee Amounts

10gcoffee12gcoffee15gcoffee18gcoffee

Need a Custom Calculation?

Use our interactive calculator for any amount

Open Calculator