Coffee Ratio Calculator
Enter any two of coffee, water and ratio and get the third — in grams, tablespoons, millilitres and finished cups.
The Coffee Ratio Calculator runs entirely in your browser. Nothing you enter is uploaded.
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Об инструменте Coffee Ratio Calculator
A brew ratio is a weight ratio: 1:16 means one gram of coffee to sixteen grams of water. The arithmetic only stays honest in grams, because water is a convenient 1 gram per millilitre but ground coffee is not — which is why scooping by volume drifts as beans change roast and grind. The other half of the calculation is absorption. Wet grounds hold back roughly twice their own weight, so 500 g of water through 31 g of coffee leaves about 437 g in the cup, not 500. This calculator solves whichever of coffee, water or ratio you are missing, starts from the ratio each brew method is built around, and tells you how many actual mugs come out the other end.
Возможности
- Solves for coffee, water or ratio from the other two
- Starting ratios for drip, pour over, French press, AeroPress, moka, espresso and cold brew
- Water entered in grams, millilitres, fluid ounces, mugs or carafe cups
- Brewed yield after absorption, not just water in
- Level tablespoons for brewing without a scale
- Strength label from espresso through to under-extracted
- Works backwards from the number of mugs you want
- Everything computes on your device
Как использовать Coffee Ratio Calculator
- Pick the brew method to load its usual ratio
- Choose which of coffee, water or ratio to solve for
- Enter the two values you know, in whatever unit suits
- Read the dose, the water and the finished yield
Пример
Ввод
500 g water at 1:16
Результат
31.3 g coffee ≈ 5.9 level tablespoons
Yield 437 g ≈ 1.8 mugs (8 oz) or 3.0 carafe cups
The grounds keep about 63 g — twice their own dry weight.
Частые ошибки и устранение неполадок
- The carafe never fills to the line. — Absorption is the reason. Add water equal to about twice the dry coffee weight on top of the target yield, or use the mug figure here, which already accounts for it.
- Coffee tastes thin and sour at the recommended ratio. — That is under-extraction, not weakness. Grind finer, use hotter water or extend the contact time before adding more coffee — a wider ratio with proper extraction beats a strong, sour cup.
- The tablespoon figure disagrees with the scale. — A tablespoon of coffee is roughly 5.3 g, but it varies by grind and roast — a light roast ground coarse can be 30% off. Volume is a fallback; the scale is the measurement.
Часто задаваемые вопросы
- What is the best coffee to water ratio?
- Between 1:15 and 1:17 for filter coffee, with the golden cup standard sitting near 1:16.7. French press runs stronger at 1:12, espresso is about 1:2, and cold brew concentrate is 1:8 before dilution.
- How much coffee do I need for a full 12-cup carafe?
- A 12-cup carafe holds 12 five-ounce cups, about 1,775 ml. At 1:16 that means roughly 111 g of coffee, but you need to add water to cover absorption — about 1,995 g in total to actually fill the carafe.
- Why do coffee machines measure cups as five ounces?
- Carafe markings follow an old convention where a cup is 5 fl oz — smaller than the 8 fl oz measuring cup and much smaller than the mug most people drink from. It is why a 12-cup machine fills about seven mugs.
- How many tablespoons is 30 grams of coffee?
- About 5.7 level tablespoons, since a tablespoon of medium-ground coffee weighs roughly 5.3 g. The figure drifts with grind size and roast level, which is why brewing by weight is more consistent.
- Does the ratio change for cold brew?
- Yes, substantially. A concentrate is brewed around 1:8 and diluted one-to-one when served; a ready-to-drink cold brew is made at about 1:15 and steeped for 12 to 18 hours in the fridge.
Связанные инструменты
Все инструменты ArrayKit