Brew Scaling Tool
BrewingScale any coffee recipe for different numbers of cups. Perfect for parties, small batches, or when you need to adjust serving sizes.
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Original Recipe
Recipe Summary
Scaled Recipe
Scaling Notes
Scaling Tips
How To Use This Tool
Scaling coffee is more than multiplying everything blindly. This tool preserves brew ratio and gives you a realistic time adjustment so larger brews stay balanced.
- 1
Enter the recipe that already tastes good
Start from a brew you trust rather than inventing a large-batch recipe from scratch.
- 2
Set the new serving count
The tool recalculates dose, water, and an adjusted brew time for the larger or smaller batch.
- 3
Brew and make a final taste adjustment
Large brews can still need a minor grind tweak because bed depth and pour dynamics change.
Common Questions
Click a question to expand the answer.
Why does brew time not scale in a straight line?
As batch size grows, bed depth, drawdown resistance, and thermal mass change. A square-root style time adjustment is often a better starting point than doubling brew time outright.
Should I change grind size when scaling up?
Sometimes. If larger batches stall or taste heavy, go a little coarser. If they run fast and thin, go a little finer.
Does brew scaling work for cold brew and immersion recipes too?
Yes, but very large immersion batches may still need small tweaks because agitation, vessel shape, and thermal retention change as batch size grows.
Why do big batches often taste duller than single cups?
Larger brews can lose clarity when temperature, pouring, and bed depth become less controlled, so scaling the recipe is only part of the fix.