Grind By Weight vs Grind By Time. Why Modern Cafés Are Making the Switch

Every great espresso starts with consistency.

Most coffee drinkers focus on the coffee machine.

But experienced baristas know that the grinder often plays an even bigger role in producing a great cup.

One of the biggest innovations in café grinders over the past decade has been the move from grind-by-time technology to grind-by-weight technology.

So what's the difference?

The Traditional Approach: Grind By Time

For  a long time now, automatic espresso grinders work using a timer.

A barista programs the grinder to run for a set amount of time.

For example:

• 6.2 seconds for a double shot

This system works well, but it has one major limitation.

It assumes coffee behaves exactly the same every day.

Unfortunately, coffee doesn't.

Coffee Is Constantly Changing

Coffee is affected by:

• Humidity

• Temperature

• Roast age

As these variables change, the speed at which coffee flows through the grinder also changes.

This means:

6.2 seconds might produce:

• 18 grams today

• 17 grams tomorrow

• 19 grams next week

Even small changes in dose can significantly impact espresso extraction.

Can Grind-By-Time Still Produce Great Coffee?

Absolutely.

While grind-by-weight technology offers greater convenience and consistency, a well-managed grind-by-time grinder can still produce excellent results.

The key is that the barista must actively monitor the coffee dose and make regular adjustments throughout the day.

For example, a café may be aiming for an 18-gram dose.

An attentive barista will regularly check the dose weight and make adjustments to either:

• The grind time

• The grind size

• Or both

to ensure the recipe remains consistent.

This process is often part of a café's normal dialling-in routine and is one of the reasons experienced baristas spend time weighing doses and tasting espresso throughout the day.

What Is Grind By Weight?

Grind-by-weight grinders solve this problem.

Instead of grinding for a fixed amount of time, the grinder measures the actual weight of coffee being delivered.

The grinder automatically stops once the target weight is reached.

For example:

18.0 grams means 18.0 grams.

Every time.

Why This Matters

Consistent dose equals consistent extraction.

Benefits include:

• More accurate espresso recipes

• Less waste

• Faster dial-ins

• Better consistency between baristas

This allows cafés to spend less time correcting errors and more time focusing on quality.

Is Grind By Weight Perfect?

Not quite.

Baristas still need to:

• Dial in espresso

• Adjust grind size

• Taste coffee

But grind-by-weight technology removes one major variable from the equation.

That's why it's rapidly becoming the new standard in specialty coffee.

The Real Difference

The biggest difference between the two systems isn't necessarily the quality of the coffee.

It's how much manual intervention is required to maintain consistency.

With a grind-by-time grinder, the barista is responsible for regularly checking and correcting the dose.

With a grind-by-weight grinder, the grinder automatically corrects for many of these small changes.

Both systems can produce exceptional coffee when managed correctly.

Grind-by-weight simply reduces one variable and makes it easier to stay on recipe throughout the day.

If your keen to learn more about how to dial in your grinder and achieve the perfect extraction you should join one of our Foundations Barista Course’s, we run them twice a week in Sydney and the Sutherland Shire!