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Calculators

Coffee calculators

Three calculators: how much coffee for your water, how much caffeine in a day and what a cup at home costs. They work in your browser and send nothing.

Coffee and water

Pick a method or set a ratio, then change the water or the coffee — the other one is worked out.

strongermilder

15,6 g + 250 ml

SCA for filter: 55 g of coffee per litre of water ±10% — about 1:18. Espresso is counted by the yield in the cup; the usual guide is 1:2.

Sources (3)

Caffeine in a day

Mark what you drink in a day. The amount of caffeine in a cup depends a lot on the beans and the recipe — hence the range.

Espressosingle · 60–80 mg
0
Double espresso, cappuccino, lattewith a double shot · 120–160 mg
0
Filter coffee240 ml · 90–165 mg
1
Phin with robusta16–20 g of robusta, estimate · 270–420 mg
0
Cezve9 g of coffee · 70–115 mg
0
Instant2 g, a spoonful · 45–90 mg
0
Cold brewa glass with ice · 120–190 mg
0
Energy drink250 ml · 80 mg
0
If it applies

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0

EFSA levels for healthy adults: up to 400 mg a day and up to 200 mg at a time; in pregnancy and while breastfeeding up to 200 mg a day; children and teenagers up to 3 mg per kg of body weight. The robusta phin is an estimate from the caffeine in the bean (IARC): there are no measurements. This is not medical advice.

Sources (8)

Cost per cup and a month’s supply

What a cup from your bag costs, how many beans you go through in a month and how that compares with a café.

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    Without milk, sugar, water or grinder wear: beans only.

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