Grinding Rice Flour Using A Coffee Grinder

Quick answer

• Making rice flour in a coffee grinder is possible, but not ideal.
• Expect a coarse, inconsistent flour.
• It’s best for small batches or when you’re in a pinch.
• Regular coffee grinders aren’t designed for dry grains.
• You’ll likely dull your grinder’s blades.
• Clean it thoroughly afterward.

Who this is for

• Home bakers experimenting with gluten-free recipes.
• Campers needing a tiny amount of flour for a specific dish.
• Anyone curious if their coffee grinder can pull double duty.

What to check first

Brewer type and filter type

This isn’t directly applicable to grinding rice, but it’s good to know your coffee gear. A burr grinder is way better for coffee than a blade grinder. For rice flour, neither is great, but a blade grinder might handle it slightly better than a burr one, though it’ll still get messy and dull.

Water quality and temperature

Again, more for coffee. But clean water is always key. If you’re grinding rice, make sure the grinder is bone dry. Any moisture is going to turn that rice into a sticky mess.

Grind size and coffee freshness

For coffee, this is everything. For rice flour, you’re aiming for “flour,” but a coffee grinder will likely give you something more like coarse cornmeal or even whole grains mixed with dust. Freshness for rice flour isn’t really a thing like it is for coffee beans.

Coffee-to-water ratio

This is for brewing coffee. When grinding rice, you’re just grinding. No water involved. You’re aiming for volume of rice to volume of flour, which is roughly 1:1, but the grinder’s inconsistency will mess with that.

Cleanliness/descale status

This is CRUCIAL for grinding rice. Your coffee grinder needs to be spotless and completely dry. Any coffee residue will contaminate your rice flour. And trust me, getting rice dust out of a coffee grinder is a pain.

Step-by-step (brew workflow)

This isn’t a brew workflow, it’s a grinding workflow. Let’s call it the “Rice Flour Hustle.”

1. Gather your rice. Use dry, uncooked white rice. Brown rice has too much oil and fiber.

• What “good” looks like: Clean, dry grains.
• Common mistake: Using cooked or oily rice. Avoid this.

2. Measure your rice. Start with a small amount. A quarter cup is plenty for a test run.

• What “good” looks like: A measured, manageable amount.
• Common mistake: Overfilling the grinder. This makes it inefficient and can burn out the motor.

3. Ensure the grinder is DRY and CLEAN. Seriously, no coffee dust.

• What “good” looks like: A sparkling, bone-dry grinder chamber.
• Common mistake: Grinding with residual coffee oils. Your rice flour will taste like yesterday’s brew.

4. Add rice to the grinder. Don’t pack it in.

• What “good” looks like: Rice loosely filling the bottom of the chamber.
• Common mistake: Stuffing too much rice in. It won’t grind evenly.

5. Secure the lid. Make sure it’s on tight.

• What “good” looks like: A snug, secure lid.
• Common mistake: A loose lid. Rice dust everywhere. Not fun.

6. Pulse the grinder. Start with short bursts, like 5-10 seconds.

• What “good” looks like: The motor whirring, rice breaking down.
• Common mistake: Running the grinder continuously. This overheats the motor and the rice, creating starchy paste.

7. Shake and repeat. After each pulse, give the grinder a gentle shake to redistribute the rice.

• What “good” looks like: Even grinding action.
• Common mistake: Not shaking. The rice at the bottom grinds, the stuff on top just sits there.

8. Check consistency. After several pulses, open and check. You’ll see it’s not uniform.

• What “good” looks like: A mix of fine powder and coarser bits.
• Common mistake: Expecting fine, uniform flour. This grinder isn’t built for it.

9. Continue pulsing and shaking until you reach your desired (though imperfect) consistency.

• What “good” looks like: Mostly powder with some larger particles.
• Common mistake: Grinding too long and overheating.

10. Empty the flour. Carefully tap it out.

• What “good” looks like: Most of the flour transferred to a container.
• Common mistake: Leaving flour stuck in the grinder.

11. Clean the grinder IMMEDIATELY. This is the hardest part. Use a brush.

• What “good” looks like: A clean, dry grinder, ready for coffee again.
• Common mistake: Letting rice dust set. It gets everywhere and is tough to remove.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Using brown rice	Oily flour, clumping, grinder damage, off-flavor.	Stick to white rice.
Overfilling the grinder	Uneven grind, motor strain, potential burnout, excess heat.	Grind in small batches.
Grinding continuously	Overheating the motor and rice, turning rice into a starchy, sticky paste.	Use short pulses with breaks.
Not shaking the grinder	Inconsistent grind size, larger chunks remaining, inefficient grinding.	Shake between pulses.
Not cleaning the grinder thoroughly	Coffee residue contaminates future coffee, rice dust hardens and clogs.	Brush out all dust immediately; consider a deep clean if needed.
Expecting super-fine flour	Disappointment, frustration, thinking the process failed.	Accept that it will be coarse and inconsistent.
Using a burr grinder for rice	Blades can chip, motor can struggle, difficult to clean.	Blade grinders are slightly better for this, but still not ideal.
Grinding too much at once	Motor overheats, blades dull faster, inconsistent results.	Work in very small batches.
Not letting the grinder cool down	Motor damage, potential for melting plastic parts.	Allow breaks between grinding sessions.
Storing the rice flour in the grinder	Stale flour, contamination, attracts pests.	Transfer to an airtight container immediately.

Decision rules (simple if/then)

• If you need a large quantity of rice flour, then don’t use a coffee grinder because it’s inefficient and will damage your grinder. Use a dedicated grain mill or buy pre-made flour.
• If you’re making a recipe that requires very fine rice flour (like delicate pastries), then don’t use a coffee grinder because it won’t achieve the necessary fineness.
• If your coffee grinder is a high-end burr grinder, then avoid using it for rice flour because you risk damaging the precise burrs.
• If you’re in a pinch and only need a tablespoon or two of coarse rice flour for a sauce or a quick fix, then a coffee grinder can work.
• If you notice your grinder smelling burnt or struggling, then stop immediately because you’re likely overheating the motor.
• If you want to keep your coffee grinder tasting like coffee, then clean it meticulously after grinding rice.
• If you’re grinding brown rice, then expect a less-than-ideal outcome due to the oil content. White rice is a better choice.
• If you’re grinding anything other than dry white rice, then stop and reconsider because most other grains or ingredients will cause problems.
• If you have a very old or cheap coffee grinder, then it might not have the power to grind rice effectively and could break.
• If you’re concerned about dulling your grinder’s blades, then this task is probably not for you.

FAQ

Can I really make rice flour in a coffee grinder?

Yes, you can, but it’s not what coffee grinders are designed for. You’ll get a coarse, inconsistent flour. It’s best for small, experimental batches.

Will it ruin my coffee grinder?

It can definitely dull the blades and put extra strain on the motor. If you do it, clean it really well afterward to avoid coffee contamination.

What kind of rice should I use?

Stick to dry, uncooked white rice. Brown rice has oils that can gum up the grinder and affect the flavor.

How much rice can I grind at once?

Keep it small. Think a quarter cup max. Overfilling will lead to uneven grinding and motor strain.

How long do I grind for?

Use short pulses, about 5-10 seconds each. Let the motor cool between pulses. Running it too long will overheat everything.

What if I want super fine rice flour?

You won’t get it from a coffee grinder. For fine flour, you need a proper grain mill or to buy it pre-ground.

Is it messy?

Oh yeah. Rice dust gets everywhere. Make sure the lid is on tight and be prepared for cleanup.

Can I use my blade grinder or my burr grinder?

A blade grinder is slightly better suited for this than a burr grinder, as burrs are precise and can be damaged. But neither is ideal.

What this page does NOT cover (and where to go next)

• Specific recipes for using homemade rice flour.
• Detailed instructions for cleaning specific grinder models.
• Comparisons of different types of grain mills.
• The science behind gluten-free baking.
• Commercial production of rice flour.