Espresso dialling tools

Dial in faster.
Waste less coffee.

Grind adjustment calculators, shot timer references, and water hardness impact tools — for serious espresso operators.

Calculate grind adjustment Check water hardness
SCA-aligned formulas No account needed ⭐ 4.7/5 from 312 users
4,217 calculations run 183 professional users Free forever
Example output
Grind clicks −3 from current
Target TDS 9.2%
Direction Finer

Values update in real time as you adjust inputs.

Grind Adjustment

Grind Adjustment Calculator

Enter your current shot parameters to get a precise click adjustment and extraction estimate.

Recommended grind adjustment
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Direction
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Estimated new EY
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Adjustment note
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Process

How it works

01

Enter current shot time and target extraction time.

Input your live shot data and the time target you are working toward. Both values inform the grind delta.

02

Calculate grind click adjustment and direction.

The calculator converts time difference to click count and specifies whether to move finer or coarser.

03

Verify water chemistry against SCA brewing water guidelines.

Use the Water Hardness tool to confirm your water parameters support the extraction you are targeting.

Knowledge Base

From the blog

Water and espresso extraction
Water Science

Water for Espresso: The SCA Guidelines Most Cafés Ignore

Bicarbonate levels in most urban tap water run double the SCA maximum. The result is a flattened, muted cup.

Jean-Pierre Moreau · March 2026

Read →
Espresso channelling diagnosis
Extraction Faults

How to Diagnose Espresso Channelling Without a Pressure Profiler

Channelling can reduce extraction yield by 4–6 percentage points in a shot that looks perfectly normal.

Nina Stern · March 2026

Read →
Single origin espresso dialling
Single Origin

Single Origin Espresso: Why Dialling In Takes 3× Longer

A washed Ethiopian at 18% EY tastes sour. The same coffee at 22% tastes bitter. The target is a 1–2% window.

Charlotte Weiss · March 2026

Read →
Professional Feedback

What baristas say

★★★★★

"The grind calculator shortened my dialling-in process from 12 shots to 4."

Luca B.
Competition Barista
★★★★★

"I use the water tool to verify every batch of water I blend for our brew bar."

Sophie H.
Head of Coffee
★★★★★

"Precise, fast, and built for professionals."

Tobias K.
Roastery Owner
FAQ

Frequently asked questions

What is a click on a grinder?

One indexed stop on an adjustable-grind burr grinder. The time change per click varies by grinder — calibrate with your own equipment.

What is the SCA water guideline?

The Specialty Coffee Association publishes target ranges for brewing water chemistry to ensure optimal extraction.

Does water hardness affect espresso taste?

Yes. Calcium assists extraction but excess causes scale. Magnesium enhances brightness. Bicarbonate buffers pH.

Can I use RO water for espresso?

Straight RO water (zero minerals) corrodes boilers and extracts poorly. Remineralise to SCA targets.

Does the grind calculator account for tamping pressure?

No. It assumes consistent tamping at 15–20 kg. Inconsistent tamp pressure overrides grind adjustment.

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