Espresso Ratio Calculator and Diagnostic Tool
Use this free espresso ratio calculator to dial in a better shot in seconds. Set your dose. Choose your roast level and water temperature. The tool estimates your brew ratio, yield, extraction and strength. It gives you a clear starting recipe and a Barista Score so you can pull a balanced espresso at home.
Use it to troubleshoot a sour or bitter shot and find your sweet spot faster.
Espresso Shot Calculator & Diagnostic Tool
Bean Profile
Shot Parameters
Live Dashboard
Yield
Estimates are heuristic guidance, not lab measurements.
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How to Dial In Your Espresso
Dialing in means adjusting your recipe until the shot tastes balanced. A good starting brew ratio is 1:2. That is 18 grams of coffee in for about 36 grams of espresso out. Pull the shot and taste it before you change anything.
A sour or weak shot usually means under extraction. Grind finer or raise the water temperature a few degrees. A bitter or harsh shot usually means over extraction. Grind coarser or lower the temperature. Change one variable at a time. Small steps give you a clean read on every shot.
Quick Espresso Troubleshooting Chart
- Sour and thin: grind finer, increase dose, or raise temperature.
- Bitter and dry: grind coarser, reduce dose, or lower temperature.
- Shot runs too fast (gusher): grind finer or tamp level.
- Shot runs too slow (choked): grind coarser or reduce dose.
Fresh beans matter too. Coffee around 7 to 21 days off roast tends to pour best. Re-check your grind when you open a new bag.
Espresso Ratio Questions
A good starting espresso ratio is 1:2. That is 18 grams of coffee in for about 36 grams of espresso out. Lighter roasts often taste better at a longer 1:2.5 ratio. Darker roasts can shine at a shorter 1:1.5 ratio. Use the calculator above to set your dose and see the matching yield instantly.
Dialing in means adjusting your recipe until the shot tastes balanced. Start with a 1:2 ratio and pull a shot. Taste it before you change anything. Then adjust one variable at a time. Grind size has the biggest effect on extraction. Small steps give you a clean read on every shot.
A sour shot points to under extraction. Grind finer or raise the water temperature a few degrees. A bitter shot points to over extraction. Grind coarser or lower the temperature. Fresh beans help too. Coffee around 7 to 21 days off roast tends to pour best.