Start by entering your typical weekly coffee consumption. This helps the calculator determine how much coffee you actually drink versus how much you might waste. Select your preferred storage method from the dropdown. Each method affects how long your coffee stays fresh and how much you'll lose to staleness.
Enter your roast frequency - how many days you like between roasting sessions. A week apart is common for home roasters who want fresh coffee. Enter your batch size based on how much you roast at once. The calculator uses ounces, so check your roaster's batch recommendations.
Click Calculate to see your optimal schedule. The dashboard shows how much to roast daily to minimize waste while keeping your beans fresh. The waste forecast bar shows projected waste percentage. Green means less than 5% waste, yellow 5-15%, red over 15%.
This tool uses averages from coffee science and roasting community data. Your actual results may vary based on bean type, roast level, local climate, and personal taste preferences. The calculator assumes:
Scenario 1: The Daily Drinker - Sarah drinks 2 cups daily and roasts weekly. She uses an airtight container. Input: 14 cups weekly, airtight storage, 7-day frequency, 12oz batch. Result: 24oz daily roast amount, 2% projected waste.
Scenario 2: The Freezer Fan - Mike roasts 32oz every two weeks and stores in the freezer. Input: 10 cups weekly, frozen storage, 14-day frequency, 32oz batch. Result: 12oz daily roast amount, 8% projected waste due to freezer effectiveness.
Scenario 3: The Over-Roaster - Alex roasts 24oz but only drinks 8 cups weekly. Input: 8 cups weekly, airtight storage, 7-day frequency, 24oz batch. Result: High 25% waste projection - suggests reducing batch size or roasting more frequently.
Should I grind before or after storage? Always grind just before brewing. Whole beans stay fresh longer. Pre-ground coffee loses flavor within 24-48 hours.
How do I know when coffee is stale? Stale coffee lacks aroma and tastes flat. A simple test: pour hot water over fresh and old beans. Fresh beans will foam (bloom) and release aroma quickly.
Can I revive stale coffee? Unfortunately, once coffee goes stale, the flavor compounds are permanently degraded. The best approach is prevention through proper timing and storage.
What about different bean origins? Light roasts from origin beans (Ethiopian, Kenyan) often peak sooner than darker blends. The calculator uses average timing, so check your specific beans.