Babushka Market

Cooking & Baking calculator

Coffee Ratio & Supply Calculator

Calculate brewing coffee from water and ratio, or plan beans for cups, days and purchase bags.

What does a worked calculation look like?

Brewing 500 g of water at a 1:16 ratio needs 500 ÷ 16 = 31.25 g of coffee.

Brew ratio

Enter water mass and the recipe’s water-to-coffee ratio.

Method and practical checks

  • Coffee = water mass ÷ ratio. This plans brew inputs, not finished drink yield; water retained by grounds is not estimated. Espresso uses a different convention, so do not substitute beverage yield for water here.

How the Coffee Ratio & Supply Calculator works

Every calculation option

Brew ratio

Enter water mass and the recipe’s water-to-coffee ratio.

  • Coffee = water mass ÷ ratio. This plans brew inputs, not finished drink yield; water retained by grounds is not estimated. Espresso uses a different convention, so do not substitute beverage yield for water here.

Cups & bags

Use your measured dose, serving count and existing stock.

  • The entered dose is specific to your brew recipe. Whole bags round up only after subtracting usable stock.

Worked example

Brewing 500 g of water at a 1:16 ratio needs 500 ÷ 16 = 31.25 g of coffee.

Pre-filled values: Brew ratio
InputValue
Water mass500 g
Water per gram of coffee16 g/g
Calculated result
ResultValue
Coffee required31.25 g

Reading the result

Does a coffee cup mean a fixed drink volume?

No. Enter your actual brewed volume rather than assuming all mugs are the same. At a 1:16 coffee-to-water ratio, 1 L of water uses 62.5 g of coffee. The ratio is editable and does not promise identical flavour across different beans and brewing methods.

Does the supply estimate include waste?

Only the consumption and allowance you enter are included. Dialling in a grinder, retained grounds and discarded brews can use extra coffee. Compare the calculated quantity with pack sizes and freshness needs before buying a large stock. Allow for those separately. Allow for those separately.

How does a 1:16 coffee ratio scale to a smaller brew?

A 1:16 coffee-to-water ratio uses one part coffee for sixteen parts water under the tool's stated working units. For a 500 ml water input, the example gives 31.25 g of coffee. Keep brew volume and ratio separate; changing mug size need not mean changing the chosen brewing strength.

Calculation/content reviewed 4 October 2026. Source: Babushka Market’s displayed formulas, units and labelled editable assumptions. How the estimates work

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