Last Updated: November 9, 2026
Quick Summary
To calculate coffee consumption per month, multiply your daily cups by the grams of coffee per cup and by the days you brew. A typical 30-day month with 3 cups a day at 18 grams each comes to 1,620 grams, or about 3.6 pounds. Weigh one cup's dose and track a normal week before settling on your number.
- Standard drip or pour-over cups typically use about 15 to 20 grams of ground coffee.
- Espresso double shots usually use about 18 to 20 grams of coffee.
- Use 22 days for a five-day work month and 30 days if you brew daily.
- One ounce is about 28 grams, so convert your monthly grams to match your bag's unit.
- Add a margin to your total to cover grounds left in the grinder and stale beans.
Table of Contents
Knowing how much coffee you go through each month saves money and keeps your beans fresh. Customers who know their monthly number are better placed to buy the right amount, finish bags before they go stale, and avoid running out mid-week. Coffee consumption is simply the total amount of coffee you brew and drink over a set period, usually a month.
Most people guess. They buy a bag, watch it disappear, and reorder without really knowing whether they bought too much or too little. A simple calculation replaces that guesswork with a number you can plan around.
Here is what the calculation gives you:
- A clear amount of beans or grounds to buy each month
- A realistic cost you can budget for
- A delivery schedule that matches how fast you actually drink coffee
- Less waste from stale coffee sitting in the cupboard
The method is simple. You need four inputs: your serving size, your daily cups, your days of brewing, and the weight of one cup's dose. Multiply them together and you have a monthly total. The sections below walk through each step.
Step 1: Define Your Serving Size and Dose
Your serving size is how much coffee goes into one cup, and it is the foundation of every other number. Measure it once and you will avoid most of the errors that throw off monthly estimates.
A common home dose is about 15 to 20 grams of ground coffee for a standard 6 to 8 ounce cup. A double shot of espresso usually uses about 18 to 20 grams. Pour-over and drip brewing often land in the same general range, though exact amounts depend on your recipe.
Write down your dose before you do anything else:
- Standard drip or pour-over cup: about 15 to 20 grams
- Espresso shot: about 18 to 20 grams
- Large mug or double brew: roughly double your standard dose
Weigh your coffee with a kitchen scale for a week, then use your measured number in the steps that follow.
Step 2: Estimate Your Daily Cups and Convert to a Monthly Total
Count how many cups you drink on a typical day. Be honest, including the second cup at the office or the afternoon refill.
Then use this formula:
Monthly grams = Daily cups × Grams per cup × Days per month
A typical month has about 30 days, or about 4.33 weeks. If you brew 3 cups a day at 18 grams each, your calculation looks like this:
3 cups × 18 grams × 30 days = 1,620 grams per month, or about 3.6 pounds.
Accounting for Workdays and Days at Home
Coffee habits change with your schedule. If you drink coffee only on weekdays, or work from home some days and not others, adjust your count.
- Count only the days you actually brew
- Use 22 days for a standard five-day work month
- Use 30 days if you brew every day
- Track a normal week first, then multiply by 4.33 for a monthly estimate
Track one full week before you settle on a number.
Converting Cups to Grams, Ounces, and Whole Beans
Most coffee is sold by weight, so convert your monthly total into the unit on the bag.
- 1 ounce is about 28 grams (Approximate Conversions from U.S. Customary Measures to Metric | NIST)
- 1 pound is about 454 grams (Approximate Conversions from U.S. Customary Measures to Metric | NIST)
- A 12-ounce bag holds roughly 340 grams
Using the earlier example, 1,620 grams works out to about 57 ounces, or a little under 4 pounds of beans each month. Whole beans and ground coffee weigh the same per gram, but ground coffee stales faster, so buy the form you can use within a few weeks.
How Much Coffee Per Person Per Month for a Household or Office
If more than one person drinks from the same bag, multiply each person's monthly total and add them together. A household of two adults who each drink 2 cups daily at 18 grams uses about 2,160 grams a month, roughly 4.8 pounds.
For offices, start with the number of coffee drinkers, not total employees. A team of 10 where 6 people drink coffee daily needs a total based on those 6 people. Track a few weeks before buying in bulk.
Adjusting Your Estimate for Brewing Method and Waste
Your method changes the real amount you use. Espresso uses more coffee per cup than drip. French press often uses slightly more coffee for a stronger brew. Cold brew can use a lot more coffee per serving.
Waste matters too. Expect some loss from:
- Grounds left in the grinder or on the scale
- Stale beans you do not finish in time
- Test brews while you dial in a new recipe
Add a margin to your monthly total to cover losses, and add more if you brew espresso or experiment often.
Using a Coffee Consumption Calculator and Tracking Your Usage
A calculator does the arithmetic for you, but the inputs still matter. Enter your grams per cup, daily cups, and days brewed, then compare the result with a bag you have already finished.
Track your usage for one or two months. Note when a bag runs out and how many days it lasted. Recalibrate if your estimate is noticeably off.
Matching Your Monthly Total to a Subscription Delivery Interval and Cost
Once you know your monthly total, pick a delivery interval that keeps your coffee fresh and your cupboard from running empty. Learn how coffee subscriptions work and what they offer before you choose. Divide your bag size by your monthly usage to find how many weeks one bag lasts.
Use the calculation to choose a bag size and interval that fits. Read about how personalized coffee delivery is set up to plan a schedule around your monthly volume.
Cost works the same way. Compare premium coffee subscription spending against buying from a grocery store to see which option suits your budget. Multiply your monthly grams by your price per gram, or divide your bag price by its weight, to find what you spend each month. A coffee subscription makes sense when the delivery interval matches how fast you drink the coffee, so beans arrive before they run low and before they go stale. See whether a coffee subscription is worth the cost for your situation.
Frequently Asked Questions
How much coffee does the average person drink per month?
There is no single average, because habits vary widely. Use the formula above with your own daily cups and dose to get a personal number.
How many grams of coffee is one cup?
A standard drip or pour-over cup usually uses about 15 to 20 grams of ground coffee. Espresso uses about 18 to 20 grams per double shot.
Should I weigh coffee or measure by scoop?
Weighing is more accurate. Scoops vary a lot by grind size and bean density, so a kitchen scale gives you a more reliable monthly total.
Ready to stop guessing? Shop Now at Birdy & The Bear Coffee and pick a whole bean, ground, or pod option sized to your monthly total. Our coffee is roasted only after your order is placed, so it reaches you fresh, and you can choose the delivery interval that fits your routine.
Frequently Asked Questions
How much coffee does one person drink in a month?
A typical adult who drinks two cups of coffee a day, using about 10 grams of ground coffee per 6-ounce cup, uses roughly 600 grams, or about 1.3 pounds, per month. To calculate your own number, multiply your daily cups by your dose per cup, then by 30 or 30.4 days. Heavier drinkers who brew larger cups or use a stronger coffee-to-water ratio will need more. Track your usage for two weeks to replace the estimate with your real figure.
How do I calculate how long a bag of coffee will last?
Divide the bag's net weight by your daily dose to get the number of days it will last. For example, a 12-ounce bag (about 340 grams) used at 20 grams per day lasts about 17 days. Subtract a small margin for waste, such as grounds left in the grinder and beans lost during dialing in. If you brew more than one way, calculate each method's dose separately and add them together before dividing.
How much coffee should I order for a household or office?
Start with your monthly total per person, then multiply by the number of regular coffee drinkers. Add 10 to 15 percent to cover guests, extra brews, and waste. For an office, count only the people who actually drink coffee on site, and adjust for days when staff work from home. If you order by subscription, pick a delivery interval that gives you about two weeks of buffer above your calculated usage.
How often should I schedule a coffee subscription delivery?
Match the delivery interval to how long your bag lasts. If your monthly total is about 1 pound, a 2-pound order every six weeks covers you with room to spare, while a 1-pound order every four weeks keeps you close to exact. Choose a shorter interval if you value peak freshness, since coffee is best used within a few weeks of roasting.
