How much coffee for 12 cups?

    Same beans, different water - and suddenly your French press and espresso taste nothing alike. Pick a brewing method, set the cup size and strength, get exact grams of coffee and milliliters of water.

    Brewing 12 cups of coffee and need the exact amount of grounds? The ratio changes with the method: French press uses 1:15 (about 13 g per 200 ml cup), espresso runs at 1:2 (15 g per 30 ml shot), and cold brew concentrate needs 1:8. Enter 12 in the cups field below, pick your brewing method and preferred strength, and the calculator returns grams of coffee, milliliters of water, and step-by-step brewing instructions.

    Parameters

    Enter data for calculations

    Choose your brewing method. Each requires a different amount of coffee and a different grind size.

    Enter the number of cups. The calculator gives total coffee and water for all cups.

    Choose the volume of one cup. For espresso the typical shot is 30 ml (1 oz).

    Choose how strong you want your coffee. Applies to French press, drip, V60, AeroPress. Espresso and moka pot use standard ratios.

    Form progress0 / 4 fields

    💡 Fill in all required fields to unlock the calculate button

    Same beans, different water - and suddenly French press and espresso taste nothing alike

    Coffee-to-water ratio is the single biggest variable in how your cup tastes. A French press at 1:15 produces a full-bodied brew. The same beans in an espresso machine at 1:2 deliver a concentrated shot with entirely different acidity and mouthfeel. This calculator covers 8 brewing methods, 4 strength levels, and cup sizes from a 20 ml ristretto to a 400 ml travel thermos.

    8
    brewing methods
    1:2 to 1:20
    ratio range
    7
    cup sizes

    How to use this calculator - step by step

    1. Brewing method - pick from French press, espresso, drip, V60, AeroPress, moka pot, cold brew or instant. Each has different base ratios.
    2. Number of cups - enter how many servings you want. Range: 1-20.
    3. Cup size - select the volume per cup. Standard mug is 200 ml (7 oz). Espresso shot is 30 ml (1 oz).
    4. Strength - light (1:20), medium (1:16, SCA standard), strong (1:13), or extra strong (1:10). Fixed for espresso, moka and cold brew.
    5. Read the results - grams of coffee, milliliters of water, tablespoon count, brewing instructions, and grind size recommendation.

    Complete ratio atlas - every method at every strength

    Ratios below show grams of coffee per milliliter of water. Fixed-ratio methods (espresso, moka, cold brew, instant) do not change with the strength selector.

    Method Light Medium (SCA) Strong Extra strong Grind
    French press 1:20 1:15 1:12 1:9 Coarse
    Drip / Filter 1:20 1:16 1:13 1:10 Medium
    V60 / Pour over 1:18 1:15 1:12 1:9 Medium-fine
    AeroPress 1:17 1:14 1:11 1:8 Fine-medium
    Espresso 1:2 (fixed) Very fine
    Moka pot 1:7 (fixed) Fine
    Cold brew 1:8 (concentrate, dilute 1:1) Very coarse
    Instant 2 g / 100 ml N/A

    Brewing temperature and time - quick reference

    Method Water temp Brew time Key tip
    French press 93-96C / 200-205F 4 min Press plunger slowly over 30 seconds
    Espresso 90-92C / 194-198F 25-30 sec Tamp grounds evenly at 9 bar pressure
    Drip 90-96C / 195-205F 4-6 min Pre-wet grounds with 50 ml, wait 30 sec
    V60 92-96C / 198-205F 2.5-3.5 min Bloom with 2x coffee weight, then pour in stages
    AeroPress 80-90C / 176-194F 1-2 min Press slowly over 20-30 seconds
    Moka pot Medium heat 3-5 min Remove from heat when gurgling starts
    Cold brew Cold / room temp 12-24 hr Concentrate - dilute 1:1 before serving
    Instant 80-90C / 176-194F Instant Do not use boiling water - it scalds the coffee

    Interesting relationships

    The SCA (Specialty Coffee Association) golden ratio is 1:16.67 - roughly 60 grams of coffee per liter of water. But this is a starting point, not a rule. Most specialty cafes brew V60 at 1:15 and competition baristas have won with ratios as extreme as 1:12. The right ratio is whichever makes your cup taste good to you.

    Cold brew uses more coffee per volume (1:8) than any hot method, but because extraction happens slowly over 12-24 hours without heat, the result is 67% less acidic than hot-brewed coffee. The concentrate stores in the fridge for up to 2 weeks.

    A standard espresso shot uses 15 g of coffee for 30 ml of water (ratio 1:2). That is 10 times more concentrated than drip coffee at 1:16. Yet an espresso has less total caffeine (63 mg) than a 200 ml drip cup (95 mg) simply because the serving size is smaller.

    Practical examples

    Example 1: French press, 2 cups, 200 ml each, medium strength
    400 ml water / 15 = 27 g coffee (~4.5 tablespoons)
    Example 2: Espresso double shot, 2 x 30 ml
    60 ml / 2 = 30 g coffee (15 g per shot, fixed ratio)
    Example 3: V60 pour over, 1 cup, 300 ml, strong
    300 ml / 12 = 25 g coffee - bloom with 50 ml, then pour in stages
    Example 4: Cold brew, 4 cups, 200 ml each
    800 ml / 8 = 100 g coffee (concentrate). Dilute 1:1 for 1,600 ml ready-to-drink.
    Example 5: AeroPress, 1 cup, 200 ml, extra strong
    200 ml / 8 = 25 g coffee - press slowly, expect a thick, espresso-like body

    FAQ - Frequently asked questions

    What is the SCA golden ratio for coffee?
    The Specialty Coffee Association recommends 55-65 grams of coffee per liter of water, which works out to roughly 1:16.67. This produces a balanced extraction between 18-22% of the coffee solids. The calculator's "Medium" setting uses 1:16 for drip and 1:15 for French press and V60, both within this range.
    Why does grind size matter so much?
    Grind size controls extraction rate. Finer grounds have more surface area, so water extracts flavors faster. Espresso needs very fine grounds because contact time is only 25-30 seconds. French press needs coarse grounds because the coffee sits in water for 4 minutes - fine grounds would over-extract and taste bitter. Using the wrong grind size is the most common home-brewing mistake.
    Can I measure coffee with a tablespoon instead of a scale?
    A level tablespoon of ground coffee weighs roughly 5-7 g depending on grind size and how tightly you pack it. For casual brewing this is fine. For consistent results, a kitchen scale accurate to 1 g makes a noticeable difference - especially for espresso and pour-over where 1-2 g changes the taste.
    Is cold brew stronger than espresso?
    Cold brew concentrate (1:8) is more caffeinated per volume than espresso (1:2) because it steeps for 12-24 hours. But you dilute cold brew 1:1 before drinking. After dilution, a 200 ml glass of cold brew has roughly 100-150 mg caffeine - similar to a 200 ml drip coffee and about 2x a single espresso shot (63 mg).
    Why should I not pour boiling water on coffee?
    Boiling water (100C / 212F) extracts bitter compounds from coffee too quickly, especially chlorogenic acid lactones and phenylindanes. The optimal range is 90-96C (195-205F) for hot methods. After boiling, wait 30-60 seconds before pouring. Exception: AeroPress works well with even cooler water (80-85C) because the pressure compensates for lower temperature.
    How long do coffee beans stay fresh after opening?
    Whole beans: 2-4 weeks after roasting (or opening a sealed bag). Ground coffee: 1-2 weeks maximum - surface area increases oxidation dramatically. Store in an airtight container at room temperature, away from light and heat. Do not refrigerate (moisture) and do not freeze opened bags (condensation). Buy in quantities you will finish within 2 weeks.

    Related tools

    Pizza Calculator

    Calculate how many pizzas you need for any group size and get homemade dough ingredients - Open calculator

    Serving Size Calculator

    Scale any recipe to more or fewer servings with proportional ingredient adjustment - Open calculator

    Kitchen Measurement Converter

    Convert cups, tablespoons, grams and ml for 25 common ingredients - Open converter

    Baking Time Calculator

    Calculate roasting time by weight for 8 cuts of meat and adjust oven temperature for fan vs conventional - Open calculator

    See also

    Coffee for 1 Cups - How Many Grams? Ratio CalculatorCoffee for 2 Cups - How Many Grams? Ratio CalculatorCoffee for 3 Cups - How Many Grams? Ratio CalculatorCoffee for 4 Cups - How Many Grams? Ratio CalculatorCoffee for 6 Cups - How Many Grams? Ratio CalculatorCoffee for 8 Cups - How Many Grams? Ratio CalculatorCoffee for 10 Cups - How Many Grams? Ratio Calculator

    Calculator verified by the LiczGrupa.pl team

    Content, formulas and results have been reviewed for accuracy and relevance by our team of specialists.

    Patryk Matyjasik

    Reviewed by: Patryk Matyjasik

    Related topics

    coffee ratio calculator
    how much coffee per cup
    coffee to water ratio
    french press coffee ratio
    espresso dose grams
    pour over coffee ratio
    v60 ratio calculator
    aeropress coffee amount
    cold brew ratio calculator
    how many grams of coffee
    coffee brewing calculator
    moka pot coffee ratio
    drip coffee ratio
    SCA golden ratio coffee
    coffee strength calculator