# Coffee Calculator

Calculate the perfect coffee-to-water ratio for drip, pour-over, French press, espresso, cold brew, and AeroPress. Get grams and tablespoons for any number of cups.

## What this calculates

Great coffee starts with the right ratio of coffee to water. This calculator gives you the exact amount of grounds and water for your preferred brew method and strength, whether you are making a single cup or a full pot.

## Inputs

- **Brew Method** — options: Drip / Auto, Pour-Over, French Press, Espresso, Cold Brew, AeroPress
- **Number of Cups** — min 1, max 20 — One cup = 6 fl oz (177 mL), the standard coffee cup size.
- **Strength Preference** — options: Light, Medium (standard), Strong

## Outputs

- **Coffee Needed** — Weight of ground coffee to use
- **Coffee (tablespoons)** — Approximate tablespoons of ground coffee
- **Water Needed** — Volume of water to use
- **Ratio** — formatted as text — Coffee-to-water ratio used

## Details

The Specialty Coffee Association (SCA) recommends a starting ratio of about 55 to 65 grams of coffee per liter of water for most drip and pour-over methods. French press typically uses a slightly higher dose because the metal mesh filter allows more body and oils through, while espresso concentrates the brew into a small, intense shot.

Cold brew uses a higher coffee-to-water ratio (around 1:12 by weight) because the low temperature extracts flavor more slowly, and the concentrate is usually diluted before serving. AeroPress falls somewhere between drip and French press depending on your recipe.

Grind size matters just as much as ratio. Finer grinds extract faster, so espresso uses a very fine grind with short contact time, while French press uses a coarse grind with 4 minutes of steeping. If your coffee tastes bitter, try a coarser grind or slightly less coffee. If it tastes sour or weak, go finer or add a bit more.

One standard coffee cup is 6 fluid ounces (177 mL), which is smaller than a typical mug. If your mugs hold 12 oz, count each mug as 2 cups.

## Frequently Asked Questions

**Q: What is the standard coffee-to-water ratio?**

A: The SCA golden ratio is about 1:16 to 1:17 by weight (roughly 60 grams of coffee per liter of water). This works well for drip and pour-over brewing. French press often uses a stronger 1:14 ratio, and cold brew concentrate typically uses around 1:12.

**Q: How many grams of coffee are in a tablespoon?**

A: One level tablespoon of ground coffee weighs approximately 5 to 6 grams, depending on grind size and how tightly packed it is. A kitchen scale is the most accurate way to measure coffee. If you do not have a scale, figure about 2 tablespoons per 6 oz cup as a starting point.

**Q: Why does brew method change the ratio?**

A: Different methods extract coffee at different rates. Espresso forces hot water through fine grounds under pressure in about 25 seconds, so it uses a high dose in a small amount of water. French press steeps coarse grounds for 4 minutes. Cold brew steeps for 12 to 24 hours at room temperature. Each method needs a different ratio to produce balanced flavor.

**Q: What size is a 'cup' of coffee?**

A: A standard coffee cup is 6 fluid ounces (177 mL), which is the measurement most coffee makers use. This is smaller than a typical kitchen measuring cup (8 oz) and much smaller than a large mug (12 to 16 oz). Check your coffee maker's markings to see which standard it uses.

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Source: https://vastcalc.com/calculators/health/coffee
Category: Health & Fitness
Last updated: 2026-04-08