Dose Calculator
Count the cups you want to pour and how strong you like them. You get the coffee to weigh, the water to heat, and what that looks like in scoops if you don't own a scale.
How many cups
2 cups of 250 ml, 500 ml in all
What to measure
with 571 g of water. The grounds soak up about 71 g, which leaves 500 ml to pour.
No scale?
About 6½ level tablespoons, or 3 coffee scoops. A tablespoon holds anywhere from 4 to 7 g depending on the bean, so treat this as a starting point. Brewing without a scale
- Ratio
- 1:16
- Per cup
- 17.9 g
- Caffeine per cup
- About 105 mg
Caffeine is an estimate; brew method and roast shift it. More in how much caffeine is in coffee. Making espresso or a concentrate? Use the ratio calculator.
How it works
A dose calculator matches coffee weight to the number of cups, cup size, and preferred strength so you can avoid both weak brews and wasteful over-dosing.
- Estimate dose quickly for single cups or larger batches.
- Account for the water the grounds hold back, so the cups you pour come out full.
- Use custom cup sizes when your mug is nowhere near a standard serving.
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Choose cups, cup size, and strength
Those three choices set the coffee to weigh and the water to heat. Pick a custom size if your mug is unusual.
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Pick your beans
Arabica, a robusta blend, or decaf changes the caffeine estimate per cup, not the dose.
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Treat the result as a dial-in baseline
From there, adjust slightly by taste rather than guessing a brand new recipe each time.
Questions
Is more coffee always the best fix for weak coffee?
Not always. Weak coffee can also come from grind size, short contact time, or poor extraction. A higher dose is only one lever.
How do cup size and brew strength interact?
Larger cups need more water, and stronger preferences need more coffee relative to that water. Both change the final dose recommendation.
Should I change dose for espresso and filter coffee the same way?
No. Espresso recipes are tighter and more sensitive to basket size, while filter doses scale more directly with beverage volume and target strength.
When should I use a custom cup size instead of presets?
Use a custom value when your mug, brewer, or travel tumbler is noticeably different from common serving sizes so the result reflects your actual volume.