Can Ground Coffee Go Bad? (3 Tips To Store Ground Coffee)

Last Updated on February 1, 2022 by John Moretti

Ground coffee is popular among coffee enthusiasts for its convenience and the quality of brew it makes. The best way to enjoy a freshly brewed cuppa is to ensure proper storage. But can ground coffee go bad?

Ground coffee goes bad, but it doesn’t necessarily mean a foul smell or rotting. Ground coffee that isn’t stored well loses its rich flavor, taste, and aroma leaving behind a very flat brew.

This article provides basic information about ground coffee, and how long it takes to go bad. It also has a section on how to know when your ground coffee has gone bad, and tips on how to store it for long-term freshness.

Does Ground Coffee Go Bad?

Coffee is roasted beans, so it can go bad with time. Though whole coffee beans have a slightly longer lifespan, the fragmented ground version doesn’t last as long. The process used during extraction to break down the grounds makes them more susceptible to chemical reactions, which means they have a much faster evaporation rate than whole beans.

When ground coffee is exposed to oxygen or water, there are changes in the chemical composition of the coffee. This results in a bland-tasting brew that isn’t the first choice to any java lover. If the coffee is left undrunk for an hour, the grounds lose their flavor and quality.

The coffee roasting process gets rid of any potential contaminants because it reduces the moisture levels in the grounds. As such, I never have to worry about bacteria and mold growing on my coffee grounds during storage.

How Long Does Ground Coffee Last?

Like most staples in the kitchen pantry, coffee is likely to go bad after some time. There is usually an expiration date on the package, but your coffee grounds can go rancid even before the due date. If you wonder how long ground coffee takes to expire and if it’s safe for consumption once it’s past its prime, the following will help with any concerns about coffee safety.

The shelf life of coffee grounds is dependent on several factors and variables. Ground coffee can last up to months without going bad. I store my coffee grounds in the pantry, and they stay fresh for 3 to 5 months past the best-by date. If frozen, the coffee grounds can last up to two years beyond the best by date and still taste good. It may lose its flavor with time, even though it doesn’t get rancid. 

The coffee grinding process subjects the beans to harmful elements, which cause them to lose their flavor gradually as the oils evaporate. As such, coffee grounds should always be stored in a dry place and an airtight container. An airtight seal keeps away moisture and air, and when the airflow is decreased, the coffee grounds retain their taste longer. 

Factors Affecting How Long It Takes For Ground Coffee To Go Bad

Some of the factors affecting how long ground coffee takes to go bad are beans’ quality and storage mode.

  • Coffee beans stored in airtight containers tend to last and retain their flavor and freshness longer.
  • Another factor affecting how long ground coffee lasts is the use-by date and the roast date. When I want to make coffee with strong and deep flavors, I use my coffee grounds as close to the roast date as I can.

According to most coffee pros, the best time to brew coffee is 7-14 days after the roast date. This, however, relies heavily on the type and quality of coffee grounds and the roasting method used. The use-by date offers a guide on when best to use the coffee grounds for maximum freshness, after which the freshness starts deteriorating.

How Do I Know When My Coffee Grounds Go Bad?

bad taste

Coffee is a very popular and universal pantry stable, as most people begin their days with a nice, hot, freshly brewed cuppa. If you suspect that your coffee grounds have gone bad, there are some telltale signs to look out for. Coffee enthusiasts easily tell the difference between coffee brewed with fresh grounds and one with stored up grounds. Often, there are clear visual signs that your coffee grounds have gone bad; if you are keen, you won’t miss it.

1. Change in color

Ground coffee has a rich, deep, black hue which changes to a brownish one when it starts to go bad. This happens when stored for a long time and under unfavorable conditions. This, however, doesn’t necessarily mean that all coffee grounds with a brownish hue are bad. It could be a result of the roasting method used or the original color of the beans.

2. Taste

Are you trying to decide whether or not to keep your bag of ground coffee? You can simply brew and take a sip to decipher if it’s good for consumption or not. If the coffee is stale, it doesn’t have the undeniable zing that makes the brew so popular. Bad coffee has no flavor, and it tastes stale, so if you’re unsure of the taste standards, get rid of it.

3. Smell

It’s possible to tell whether or not your coffee grounds have gone bad by sniffing it for bad smells.

  • When fresh, coffee emits a nutty, herby, and smoky aroma, which isn’t a characteristic of stale coffee.
  • Coffee that’s fine but has a rather musty smell, especially if it’s stored in humid conditions. When stored for too long, the whole coffee beans oils go rancid, leaving behind a funky-smelling brew.
  • If the coffee grounds look and feel okay to you, sniffing them helps eliminate the possibility of them being bad.

A freshly brewed cup of coffee has a sweet aroma, so if the smell is as expected, proceed to brew your coffee and enjoy a delightful cuppa.

4. Mold

If there are signs of mold in the storage container or packaging, it’s evident that the coffee grounds have gone bad. Exposure to moisture and humidity allows mold contamination of the coffee grounds, and mold-infested coffee is not safe to brew. When water gets in the container used for storage, the coffee grounds get wet and should be thrown out immediately.

Mold and bacteria are sickening contaminants that are seen in coffee grounds stored in a moist place.

3 Tips For Storing Ground Coffee


Grinding coffee takes time, and it’s rather messy, which is why I prefer buying ground coffee instead of coffee beans. Ground coffee is guaranteed to give me my preferred dose of caffeine every day, as long as I store it properly to conserve the flavors.

Coffee doesn’t necessarily go bad, but after a few weeks and bad storage, it starts decapitating and becomes stale. If you buy quality coffee beans, you don’t have to worry much about them going bad, as long as they aren’t exposed to moisture, air, heat, or light conditions.

1. Keep Ground Coffee Airtight And Cool

If storing large batches of coffee for an extended time, use an airtight, sizeable container for the bulk and a small one for use in the next few days. An opaque, airtight container minimizes the rate of airflow and light exposure which keeps coffee grounds fresh in the long run. Don’t use clear containers as they let in light and compromise the coffee’s quality and flavor. 

Coffee grounds are best stored in a dark, cool environment and not on the kitchen counter where it’s exposed to light or on a cabinet near the oven. If the coffee grounds come in a retail package, transfer them over to storage canisters with airtight seals.

Coffee grounds are best stored in a dark, cool environment and not on the kitchen counter where it’s exposed to light or on a cabinet near the oven. If the coffee grounds come in a retail package, transfer them over to storage canisters with airtight seals.

2. Freezing Coffee Grounds


Like most beverages, coffee is best taken when fresh, and coffee freshness is very critical to the quality of the cuppa. Coffee should be consumed as fast as possible, especially once the package seal has been broken. It’s important to remember that coffee is perishable, so any direct exposure to the freezer causes absorption of its natural oils and flavors.

According to some coffee pros, freezing coffee grounds helps retain their freshness for longer and prevents them from going bad. However, there are some disparities to this preservation belief. In my opinion, freezing coffee grounds rather than keeping them at room temperature helps maintain their freshness, but at the same time, causes the flavor to diminish eventually.

  • Freezing is recommended for long-term storage, which doesn’t require constantly opening the storage jar.
  • There is no need to defrost ground coffee after taking it out of the freezer; it’s ready and safe to use. 
  • Freezing coffee grounds for daily use isn’t the best way to keep it fresh for long or retain the flavors. This is because when you repeatedly remove the container from the freezer, the coffee grounds are exposed to moisture, resulting in an unpleasant, cardboard-tasting brew.

Regarding whether or not coffee should be frozen or refrigerated, coffee absorbs moisture and odors and tastes fast as it’s hygroscopic. This might affect the decision to freeze your coffee grounds, especially because most canisters let in small amounts of air which causes freezer burn.

If you choose to refrigerate your coffee grounds, use an airtight container and put aside as much as enough for a week so you don’t have to keep opening the container for your daily caffeine dosage.

3. Buy The Right And Necessary Amount

Ground Coffee Go Bad

After roasting, coffee starts to lose its freshness and quality almost instantly. As such, I recommend buying smaller batches of freshly roasted coffee frequently, in intervals of one to two weeks.

With large batches, the coffee may get exposed to air which causes coffee grounds to go bad very fast. When I buy large batches, I divide my coffee into small portions and put the large Portion in an airtight container.

What Affects Coffee’s Freshness?

The primary enemies of coffee freshness are moisture, air, heat, and light. If you want your coffee grounds to remain fresh for longer, you need to adhere to the standards set by baristas and professional coffee enthusiasts in the world. It’s possible and easy to store coffee at home and maintain its freshness in the long haul, as long as you:

  • Restrict fluctuations in storage temperatures
  • Minimize air movement
  • Avoid direct exposure to sunlight and heat

Coffee beans are a popular, non-negotiable pantry item in most kitchens today. It’s a great way to jump-start my mornings and stay active and productive, even on busy days. As such, it’s important to prepare and store this brew properly to ensure it retains its flavor and the caffeine qualities that make it so delicious. 

When it comes to deciding where to store coffee grounds, most people are torn between the pantry with room temperature and the freezer. The storage method depends on your needs and preferences, and they are both ideal for long and short-term storage.