The original ratio stays 1:16.7.
Practical coffee calculators
Answer the next coffee question.
Scale a recipe, rescue a cup, plan cold brew or check a bag's cost. Café teams can test margin, inventory and labour decisions before changing the operation.
For home brewersScale a brew
Turn a one-cup recipe into the amount you need without overflowing the brewer.
About 2 minutes · result updates as you typeSplit this into equal brews. Large coffee beds do not scale perfectly in one small brewer.
For coffee drinkers
My Coffee Lab
Save your own bags, record exact recipes and build a taste memory that becomes more useful after every brew.
- Visible saved-bag shelf
- Brew journal
- Recipe history
- Repeat from the same bag
For qualifying cafés
Café Workspace
Run inventory counts, recipes, menu margins, checklists, training and a weekly team schedule from the same branch record.
- Private exact stock
- Decision Lab
- Team schedule
- Curated public updates
Use the result well
Ratio describes. Taste decides.
Brew ratio connects coffee and water or beverage mass. It does not promise a universally correct extraction for a country, farm or roast. Use the number to repeat a starting point, then change one variable and taste.
Read the SCA brewing-chart research ↗Gross margin and markup are not interchangeable. Both calculators expose their formula so an owner can see exactly what the result includes and what it does not.
Save recipes in Café Workspace →