coffee grams to cups Converter

How the coffee conversion works

The converter applies cups = grams × ratio ÷ 236.588, where a US cup is 236.588 ml and the ratio is parts water per part coffee by weight. At the standard 1:16 ratio, each gram of coffee brews 16 ml of water — so 30 g brews 480 ml, about 2 cups.

Worked example: a morning pot of 4 US cups at 1:16 needs 4 × 236.588 ÷ 16 ≈ 59.1 g of coffee and 946 ml of water. At a stronger 1:15, the same 4 cups need about 63.1 g.

Treat the ratios as starting points, not rules: grind size, bean and taste all shift the best ratio a little. Note also that many coffee makers count a “cup” as 5–6 oz (about 150–177 ml), not a US cup — if yours does, brew by weight instead.

Quick reference

• 15 g coffee at 1:16 — 240 ml — 1.01 cups
• 30 g coffee at 1:16 — 480 ml — 2.03 cups
• 45 g coffee at 1:16 — 720 ml — 3.04 cups
• 60 g coffee at 1:16 — 960 ml — 4.06 cups
• 1 US cup at 1:16 — 14.8 g coffee
• 4 US cups at 1:16 — 59.1 g coffee

This is the dedicated coffee page of our grams to cups converter — and the water grams to ml converter covers the other half of the ratio.