Coffee
Coffee Ratio Calculator
Coffee and water for any brew ratio and method, with the yield after absorption.
coffee = water ÷ ratio
Also called coffee to water ratio · brew ratio calculator
Food & Drink · 5 calculators
Coffee Calculators
Coffee-to-water brew ratios, espresso ratios, cost per cup, cups per bag and daily caffeine intake.
Coffee
Espresso Ratio Calculator
Espresso brew ratio, yield and extraction guidance from dose and shot weight.
yield = dose × brew ratio
Also called espresso brew ratio · ristretto lungo calculator
Coffee
Coffee Cost Calculator
Cost per cup of home-brewed coffee, and the saving against buying it out.
cost per cup = bag price ÷ bag size × dos…
Also called cost per cup coffee · home coffee savings
Coffee
Cups Per Bag Calculator
How many cups a bag of coffee makes, and how long it will last.
cups = bag size ÷ dose per cup
Also called coffee bag cups · how long does coffee last
Coffee
Caffeine Intake Calculator
Daily caffeine from your drinks, against the recommended limit, with the half-life clearance.
remaining = total × 0.5^(hours ÷ 5.7)
Also called caffeine calculator · how much caffeine
Key coffee formulas
| Coffee Ratio | coffee = water ÷ ratio · yield = water − (coffee × 2) |
|---|---|
| Espresso Ratio | yield = dose × brew ratio |
| Coffee Cost | cost per cup = bag price ÷ bag size × dose + extras |
| Cups Per Bag | cups = bag size ÷ dose per cup |
| Caffeine Intake | remaining = total × 0.5^(hours ÷ 5.7) |
Coffee questions
What is the golden ratio for coffee?
Around 1:16 — 60 g of coffee per litre of water. Move towards 1:14 for a stronger cup or 1:18 for a lighter one.