How long does coffee stay fresh?

Coffee peaks 5-21 days after roasting depending on roast level. Light roasts peak later (7-21 days), dark roasts peak earlier (3-14 days). After peak, flavor degrades but remains drinkable for 4-6 weeks.

Should I freeze coffee beans?

Freezing extends freshness to 60-180 days. Portion beans before freezing to avoid repeated thaw cycles. Grind directly from frozen for best results.

What is coffee degassing?

Degassing is when CO2 escapes from freshly roasted beans. During this 3-7 day rest period, espresso shots will be bubbly and chaotic. Wait for degassing to complete before dialing in.

Coffee Freshness Calculator

FRESH.CALC Room Temperature

Roast Date When were the beans roasted?

Storage Method

Roast Level

Rest

Peak

Good

Stale

Today

Day 0 Day 7 Day 14 Day 21 Day 30

Current Status Enter roast date

Rest Until --

Peak Window --

Use By --

Freshness Phases

Rest Period

CO2 is still degassing. Espresso will be bubbly and chaotic. Wait for stability.

Peak Freshness

Optimal flavor development. Most aromatics intact. Best time to enjoy.

Still Good

Gradually losing aromatics. Still enjoyable but declining. Prioritize finishing.

Past Prime

Flat, cardboard-y, lacking complexity. Use for cold brew or blends.

Storage Tips

Room temperature: Keep in original bag with valve. Squeeze out air after each use.

Airtight containers: Extend life by 1-2 weeks. Vacuum canisters are ideal.

Freezing: Portion into single-use amounts. Don't refreeze. Grind from frozen for best results.

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Pro Tip

Buy amounts you'll finish in 2-3 weeks. Fresh beans beat perfectly stored old beans every time.

The Science of Staling

What actually happens to coffee over time.

CO2 Loss

Fresh-roasted beans contain CO2 that escapes over days. This creates crema in espresso but also causes turbulence. Some rest is good.

Oxidation

Oxygen reacts with flavor compounds, creating stale flavors. Oils on dark roasts oxidize faster. Minimize air exposure.

Moisture Migration

Beans absorb ambient moisture, accelerating staling. Humidity is the enemy. Keep beans dry and sealed.

Aromatic Volatility

The compounds that create aroma are volatile—they evaporate over time. Once ground, this accelerates dramatically.